This document summarizes a study that evaluated the response of 24 sunflower genotypes to charcoal rot disease caused by the fungus Macrophomina phaseolina. The genotypes were planted under different treatment conditions and assessed for various yield attributes and disease incidence. Three genotypes - HBRS-1, A-79, and G-12 - showed moderate resistance to the disease, with disease incidence between 10-24%. Several other genotypes were found to be susceptible or highly susceptible, with over 50% disease incidence. The study aims to identify resistant varieties that can be used for improving sunflower yield under charcoal rot stress conditions.
Screening of Maize Genotypes against Southern Leaf Blight (Bipolaris Maydis) ...Agriculture Journal IJOEAR
Screening of 20 maize genotypes against Southern Leaf Blight of maize (Bipolaris maydis (Nisik) Shoemaker) was carried out in RCBD in National Maize Research Program, Rampur, Nepal during June to September, 2015. The area of research field was 315 m2. Each genotype had two rows per plot of 7.5m2 with two replication. Disease incidence was taken for three times at 43, 53 and 63 DAS. Disease scoring was done as percentage of leaf area infected on individual plant at 7 days interval starting from 58 days after sowing for 5 times and disease severity and mean AUDPC was calculated. Also the yield was calculated. Shade house experiment was carried out in a Completely Randomized Design with 3 replication on 20 genotypes by artificial inoculation at 3-4 leaf stage with a pure culture suspension of Bipolaris maydis (4x104conidia per ml) .and disease incidence and survival days of plant were recorded. Among the genotypes disease severity varied in the field. Highly significant differences were observed among the genotypes for Southern Leaf Blight severity, Area Under Disease Progress Curve and grain yield. Genotypes with mean AUDPC values from 200-250, 250-300 and above 300 were categorized as moderately resistant, moderately susceptible and susceptible. Disease severity was highest on genotype Rampur 24, 07 SADVI and lowest on BGBYPOP, RML-32/RM-17 and RAMS03F08. Highest maize yield (4.44 ton/ha) was recorded on RML-32/RML-17 and least (1.41 ton/ha) was obtained in ZM-627.In shade house, Rampur-24 followed by 07 SADVI, Rampur 27 died earlier and RML-32/RML-17 and BGBYPOP survived to the longest periods after inoculation. Disease Susceptibility pattern was similar in both field and shade house condition. The genotypes RML-32/RML-17, BGBYPOP, RAMS03F08 and TLBRS07F16 could be developed as resistant varieties to Southern Leaf Blight of maize and also as high yielders during summer under Chitwan and similar conditions.
Relative toxicity of selected insecticides against adult whitefly, t. vaporar...Sachin U.S
The present experiment was conducted to assess relative toxicity of selected insecticides against whitefly in the Entomology laboratory at College of Horticulture, Mudigere during the year 2014-2015. Among the eleven treatments, imidachloprid, thiamethoxam and cyantraniliprole were highly toxic to adults which recorded 100 per cent mortality, four days after treatment. Cyantraniliprole recorded the highest adult mortality comparatively early than imidachloprid and thiamethoxam. Fipronil 80% WG, recorded 100 percent mortality five days after treatment which was followed by emamectin benzoate 5% SG at sixth day after treatment and recorded as next best treatments under laboratory condition against whitefly. Acephate 75% SP and azadirhactin 10000 ppm recorded highest level of mortality (100%) at seventh and eighth day after treatment, respectively which was followed by triazophos 40% EC, spinosad 480% SC and buprofezin 25% SC at eleventh day after treatment. Considering the result, cyantraniliprole, thiamethoxam and imidacloprid were recommended for effective control of sucking pests in cotton ecosystem.
Evidence of natural hybridization and introgression between Medicago ciliaris...Agriculture Journal IJOEAR
Abstract—The present study, investigated some reproductive and fertility parameters in some wild populations, originating from the North Tunisia (4 populations of Medicago ciliaris and 3 populations of Medicago intertexta). Previous finding revealed that these species are genetically distinct and easily recognized by the number of flowers per inflorescence and pod dimensions. However, biometrical traits and isozyme patterns intermediacy between these two species had detected the existence of a potential spontaneous interspecific hybrid originating from Sedjnane locality in Tunisia. Indeed, the present work has shown significant decrease of pollen fertility and seed production for this population when compared to the others (pollen viability 75%, pollen germinability 8% and pod production=9%). These results suggested a possible natural interspecific hybrid and confirming introgressive hybridization possibility between M. intertexta and M. ciliaris.
Estimation of genetic parameters and gene actions of sorghum [Sorghum bicolor...Innspub Net
A study of sorghum tolerance to low P condition was conducted in two experiments : (1) in nutrient solution and
(2) in acid soil. The aim of this study was to obtain information on the genetic variability and heritability of agronomic characters that could be used as selection criteria in low P condition and to obtain information on gene action that controlled agronomic characters of sorghum.The plant materials used in this experiment were F2 segregating population derived from the cross between B69 and Numbu. The first experiment was conducted in the green house of Bogor Agricultural University. B69, Numbu and F2 population were grown hidroponically for 14 days. Composition of the nutrient solution used in the experiment followed the method suggested by Ohki with modification of P concentration. P is given in the form of KH2PO4: 0.001 mM. The results showed that shoot dry weight (SDW) and total dry weight (TDW) had high estimate of heritability and moderate genotypic
coefficient of variance (GCV), thus these characters can be used for criteria selection for low P tolerance at seedling stage. The significant value of skweness from the distribution shoot dry weight in F2 segregants, indicate the presence of complementary epistasis gene action, whereas normal distribution of total dry weight showed additive gene action. The second experiment was conducted in acid soils of Bogor District Experimental Field Tenjo, Bogor. The results showed that stem diameter, panicle weight and grain yield per plant had high heritability and wide GCV value, indicating these characters can be used as the selection criteria in selecting
sorghum genotypes for low P tolerance in acid soil. Based on the skewness values, all of the agronomy characters
observed in this study were influenced by additive gene action. Get more articles at: http://www.innspub.net/volume-7-number-3-september-2015-ijaar/
Screening of Maize Genotypes against Southern Leaf Blight (Bipolaris Maydis) ...Agriculture Journal IJOEAR
Screening of 20 maize genotypes against Southern Leaf Blight of maize (Bipolaris maydis (Nisik) Shoemaker) was carried out in RCBD in National Maize Research Program, Rampur, Nepal during June to September, 2015. The area of research field was 315 m2. Each genotype had two rows per plot of 7.5m2 with two replication. Disease incidence was taken for three times at 43, 53 and 63 DAS. Disease scoring was done as percentage of leaf area infected on individual plant at 7 days interval starting from 58 days after sowing for 5 times and disease severity and mean AUDPC was calculated. Also the yield was calculated. Shade house experiment was carried out in a Completely Randomized Design with 3 replication on 20 genotypes by artificial inoculation at 3-4 leaf stage with a pure culture suspension of Bipolaris maydis (4x104conidia per ml) .and disease incidence and survival days of plant were recorded. Among the genotypes disease severity varied in the field. Highly significant differences were observed among the genotypes for Southern Leaf Blight severity, Area Under Disease Progress Curve and grain yield. Genotypes with mean AUDPC values from 200-250, 250-300 and above 300 were categorized as moderately resistant, moderately susceptible and susceptible. Disease severity was highest on genotype Rampur 24, 07 SADVI and lowest on BGBYPOP, RML-32/RM-17 and RAMS03F08. Highest maize yield (4.44 ton/ha) was recorded on RML-32/RML-17 and least (1.41 ton/ha) was obtained in ZM-627.In shade house, Rampur-24 followed by 07 SADVI, Rampur 27 died earlier and RML-32/RML-17 and BGBYPOP survived to the longest periods after inoculation. Disease Susceptibility pattern was similar in both field and shade house condition. The genotypes RML-32/RML-17, BGBYPOP, RAMS03F08 and TLBRS07F16 could be developed as resistant varieties to Southern Leaf Blight of maize and also as high yielders during summer under Chitwan and similar conditions.
Relative toxicity of selected insecticides against adult whitefly, t. vaporar...Sachin U.S
The present experiment was conducted to assess relative toxicity of selected insecticides against whitefly in the Entomology laboratory at College of Horticulture, Mudigere during the year 2014-2015. Among the eleven treatments, imidachloprid, thiamethoxam and cyantraniliprole were highly toxic to adults which recorded 100 per cent mortality, four days after treatment. Cyantraniliprole recorded the highest adult mortality comparatively early than imidachloprid and thiamethoxam. Fipronil 80% WG, recorded 100 percent mortality five days after treatment which was followed by emamectin benzoate 5% SG at sixth day after treatment and recorded as next best treatments under laboratory condition against whitefly. Acephate 75% SP and azadirhactin 10000 ppm recorded highest level of mortality (100%) at seventh and eighth day after treatment, respectively which was followed by triazophos 40% EC, spinosad 480% SC and buprofezin 25% SC at eleventh day after treatment. Considering the result, cyantraniliprole, thiamethoxam and imidacloprid were recommended for effective control of sucking pests in cotton ecosystem.
Evidence of natural hybridization and introgression between Medicago ciliaris...Agriculture Journal IJOEAR
Abstract—The present study, investigated some reproductive and fertility parameters in some wild populations, originating from the North Tunisia (4 populations of Medicago ciliaris and 3 populations of Medicago intertexta). Previous finding revealed that these species are genetically distinct and easily recognized by the number of flowers per inflorescence and pod dimensions. However, biometrical traits and isozyme patterns intermediacy between these two species had detected the existence of a potential spontaneous interspecific hybrid originating from Sedjnane locality in Tunisia. Indeed, the present work has shown significant decrease of pollen fertility and seed production for this population when compared to the others (pollen viability 75%, pollen germinability 8% and pod production=9%). These results suggested a possible natural interspecific hybrid and confirming introgressive hybridization possibility between M. intertexta and M. ciliaris.
Estimation of genetic parameters and gene actions of sorghum [Sorghum bicolor...Innspub Net
A study of sorghum tolerance to low P condition was conducted in two experiments : (1) in nutrient solution and
(2) in acid soil. The aim of this study was to obtain information on the genetic variability and heritability of agronomic characters that could be used as selection criteria in low P condition and to obtain information on gene action that controlled agronomic characters of sorghum.The plant materials used in this experiment were F2 segregating population derived from the cross between B69 and Numbu. The first experiment was conducted in the green house of Bogor Agricultural University. B69, Numbu and F2 population were grown hidroponically for 14 days. Composition of the nutrient solution used in the experiment followed the method suggested by Ohki with modification of P concentration. P is given in the form of KH2PO4: 0.001 mM. The results showed that shoot dry weight (SDW) and total dry weight (TDW) had high estimate of heritability and moderate genotypic
coefficient of variance (GCV), thus these characters can be used for criteria selection for low P tolerance at seedling stage. The significant value of skweness from the distribution shoot dry weight in F2 segregants, indicate the presence of complementary epistasis gene action, whereas normal distribution of total dry weight showed additive gene action. The second experiment was conducted in acid soils of Bogor District Experimental Field Tenjo, Bogor. The results showed that stem diameter, panicle weight and grain yield per plant had high heritability and wide GCV value, indicating these characters can be used as the selection criteria in selecting
sorghum genotypes for low P tolerance in acid soil. Based on the skewness values, all of the agronomy characters
observed in this study were influenced by additive gene action. Get more articles at: http://www.innspub.net/volume-7-number-3-september-2015-ijaar/
Genome wide association studies (GWAS) analysis of karnal bunt resistance in ...Innspub Net
Karnal bunt (KB) disease is one of the most important challenges posed on of wheat (Triticum aestivum L.) industry of Pakistan because of itsinclusionin quarantine list around the globe. This disease is caused by the fungus Tilletia indica M. (Neovossia indica). It affects the grain quality of wheat and hampers its movement in international market resulting in economic losses. Presence of >3% infected grains in wheat lot makes it unsuitable for human consumption. Eradication of this disease is very difficult as no resistant cultivar has been found against KB in Pakistan so far. Genome wide association study (GWAS) was conducted on a set of 199 wheat germplasm collected from Pakistan. In this study 31,000 single nucleotide polymorphism markers were developed by 90K SNP array technology. A linear mixed model in GWAS, accounting for population structure, was fitted to identify significant genomic regions [-log(P) ≥ 4.0] on 6 different chromosomes i.e. 1A, 1D, 2D, 3B, 4A, 5A with novel loci. Candidate genes, through wheat genome assembly, were identified as putative genes related to KB resistance including kinase like protein family. The results of this study can be useful in wheat breeding through marker assisted selection for KB resistant varieties.
Evaluation of various Synthetic Insecticides against Thrips (Thrips tabaci) i...Agriculture Journal IJOEAR
Abstract— Cotton (Gossypium spp.) popularly known as ‘white gold’ is one of the most ancient important cash crop of India. Apart from its value as fibre, it has great potential to be used as edible oil, food for animals and other by products like particle board and boxes. The development of Bt cotton containing a genetically introgresses endotoxin gene from the gram negative soil bacteria (Bacillus thuringiensis Hubner) represents a significant technological land mark in the global cotton research. Thrips is a major sucking pest on cotton crop, causing quantitative and qualitative losses to cotton. An experiment was conducted at Agriculture Research Station, Sri Ganganagar in Randomized Block Design with 10 treatments including control and replicated three times, to evaluate various insecticides against thrips in Bt cotton. The study revealed that maximum reduction (56.00%) in thrips population was recorded with the treatment of Acephate 75% SP, followed by Imidacloprid 17.8% SL (49.66%). Both the treatments were at par and significantly superior over the other treatments. The phytotoxic effect on crop could not be observed during the experimental period.
Influence of Plant Growth Regulators and Explant Type on Multiple Shoot Induc...Agriculture Journal IJOEAR
Abstract— Sesamum indicum L. is used as an important oil crop in the world. For establishing of a simple and a rapid system for in vitro culture of sesame shoot tips and hypocotyls explants were cultured on MS media with differtent combinations and concentrations of PGRs. On medium with 5 mgl-1BA plus 1 mgl-1 IAA and 1 mgl-1 ABA mutliple shoot induction on explants was occurred. Multiple shoot indution on medium supplemented with 2 mgl-1BA and 0.3 mgl-1 NAA happen with a short phase of callusing. Also MS medium with 3 mgl-1 2,4-D and 0.5 mgl-1 kinetin was a suitable medium for inducing of somatic embryogenic calli with the frequency of sub-culturing potential. Regenerated shoots on both media rooted on MS medium plus 1.5 mgl-1 NAA and 0.03 mgl-1 BA and whole regenerated plantlets formed.
Influence of phosphorous acid application on the accumulation of total phenol...Innspub Net
One mechanism used by coconut plant to protect itself against Phytophthorakatsurae is linked to total
polyphenols production. This study aimed to investigate the impact of phosphorous acid plant treatment on the
production of total polyphenols in coconuthusk, as part of chemical control.The study was conducted on two
coconuts cultivars (EGD and PB 121+) with four doses of phosphorous acid [Control, 2.8 g (TA), 5.6 g (TB), 11.2 g
(TC)]. At each sampling, the husks were processed and extracts were prepared for total polyphenols assays. There
was significant difference between EGD and PB 121+ total polyphenols production (p<0.001).The interaction
between coconut variety and phosphorous acid doses was also significant.The interaction EGD and TC had the
highest total polyphenols accumulation of 4838.5 µg/g of fresh weight (FW). For PB121+, the highest total polyphenols accumulation of 6433.71 µg/g FW was obtained from the interaction between PB121+ and T0. From this observation, it could be statedthat phosphorous acid only triggers the treated plantdefense mechanisms to produce total phenolic compounds when attacked by a pathogen. Get more articles at: http://www.innspub.net/volume-7-number-3-september-2015-ijaar/
Evaluation of herbicides and their combinations for weed control in wheat (Tr...IJEABJ
The field experiment was conducted at the Student’s Research Farm, P.G. Department of Agriculture, Khalsa College, Amritsar, Punjab, to study the evaluation of various herbicides and their combinations on wheat during 2016-17. The experiment was laid out in randomized block design with seven treatments such as weed free, weedy check, pendimethalin 2.5L/ha, pendimethalin 2.5L/ha + clodinofop 400 g/ha, pendimethalin 2.5L/ha + sulfosulfuron 32.5g/ha , pendimethalin 2.5L/ha + pinoxaden 1000 ml/ ha, pendimethalin 2.5L/ha + atlantis 400g/ha and replicated thrice. Results revealed that pendimethalin 2.5 L/ha + atlantis 400g/ha was found effective to control weed population and produced higher number of grains per ear and enhanced grain yield upto 62.3 per cent over weedy check.
Evaluating Some Insecticides for Controlling the Sunn Pest Eurygaster Spp. Pu...CrimsonpublishersMCDA
Evaluating Some Insecticides for Controlling the Sunn Pest Eurygaster Spp. Puton (Hemiptera: Scutelleridae) Under Field Conditions by Mohammed Z Khalaf in Modern Concepts & Developments in Agronomy
Influence of Various Intercrops on Pod Borers in Black Gramijtsrd
The aim of this study was to observe the influence of various intercrops on pod borers in black gram under rain fed condition. Among the different intercrops studied, marigold recorded the lowest mean population of spotted pod borer (0.74 larvaplant) and gram blue butterfly larva (0.88 larvaplant)and natural enemies like Coccinellids (2.68 beetlesplant) and spider population (1.73 spiderplant) was maximum in black gram intercropped with maize. The maximum equivalent yield was obtained from black gram intercropped with marigold (6.04 qha) followed by black gram intercropped with maize (5.24 qha).In conclusion marigold proved to be effective intercrop to control major pod borer and also enhance the population of natural enemies. Selvam. K | Dr. D. S. Rajavel"Influence of Various Intercrops on Pod Borers in Black Gram" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018, URL: http://www.ijtsrd.com/papers/ijtsrd15908.pdf http://www.ijtsrd.com/other-scientific-research-area/enviormental-science/15908/influence-of-various-intercrops-on-pod-borers-in-black-gram/selvam-k
Hassan Abdi1*, M. Taheri Mazandarani2
1, 2Research Instructor, Department of Seed and Plant Improvement, Agricultural and Natural Resources Research Center, Tehran, Iran
ABSTRACT- In order to study drought tolerance indices and identify drought tolerant genotypes in wheat, 40 improved
wheat varieties (three digits and thirty-seven new lines) in a randomized complete block design with three replications
under normal conditions and drought stress (50% flowering) in 2011-2012 on Agriculture and Natural Resources Research
Center of Tehran province were studied. Under normal grain yield and drought tolerance quantitative indicators such as
the average productivity, geometric mean productivity, stress tolerance, harmonic mean, sensitivity to stress, stress
tolerance index were calculated. 6, 37, 38 and 39 genotype with the highest values of mean productivity, geometric mean,
harmonic and stress tolerance index were average. 5, 19 and 40 genotypes maximum of sensitivity to stress and drought
tolerance and sensitivity respectively. Biplot analysis showed that genotype vectors in the vicinity of 37.38 and 39
indicators mean productivity, geometric mean productivity, stress tolerance index and harmonic mean as drought tolerant
genotypes. Evaluation shows that the studied genotypes 37.38, 39 and 27 were tolerant.
Key-words- Bread wheat, Stress tolerance indices
Radiosensitivity and Seedling Growth of Several Genotypes of Paddy Rice Mutan...AI Publications
Researchers use mutation induction in rice to create high genetic diversity. The basic population with high genetic diversity will facilitate the selection process for the desired good characters. This study aimed to determine the optimal dose that induces the highest genetic diversity in four lowland rice genotypes. The research materials were four genotypes of lowland rice, namely “G10”, “G16”, “Baas Selem”, and “Inpago Unram-1”. Gamma irradiation was carried out at the Center for Isotope and Radiation Application (PAIR) BATAN. Each genotype was irradiated at doses of 200, 300, 400 and 500 Gy. The seeding is done in the glasshouse of the Faculty of Agriculture, University of Mataram. Observations were made on the number of growing seeds, plant height and number of leaves. The LD50 value was determined based on the results of the regression analysis of the number of growing seeds at the four irradiation doses plus control (0 Gy). The results indicated that (1) the numbers of growing seeds decreased as the doses of gamma irradiation increased, (2) the LD50 value of the four rice genotypes ranged from 264 to 518 Gy, (3) the optimal dose of gamma ray irradiation for G10, G16, Baas Selem, and Inpago Unram-1 were 264 Gy, 398 Gy, 316 Gy and 518 Gy, respectively. (4) Among the four rice genotypes teasted, “G10” mutant was the most sensitive to gamma ray irradiation, whereas” Inpago Unram-1” mutant was the least sensitive genotype.
Characterization of post rainy sorghum for cold tolerance in control environm...ICRISAT
Sorghum is sensitive to temperature lower than 15°C, most of the post rainy sorghum growing areas of India coincides with low temperature stress during flowering to seed set stage. In sorghum cold temperature at flowering seem to be more detrimental as it interacts with viable pollen production or pollen shedding which result in low yield. Hence the experiment was conducted to characterize a set of 16 sorghum genotypes which includes nine cultivars and seven hybrid parental lines in a control environment research facility at ICRISAT, India with three different temperature treatments. The three Day/Night temperature treatments were T1 (25°C/10°C), T2 (25°C/5°C) and T3 as control (natural environment).
Genome wide association studies (GWAS) analysis of karnal bunt resistance in ...Innspub Net
Karnal bunt (KB) disease is one of the most important challenges posed on of wheat (Triticum aestivum L.) industry of Pakistan because of itsinclusionin quarantine list around the globe. This disease is caused by the fungus Tilletia indica M. (Neovossia indica). It affects the grain quality of wheat and hampers its movement in international market resulting in economic losses. Presence of >3% infected grains in wheat lot makes it unsuitable for human consumption. Eradication of this disease is very difficult as no resistant cultivar has been found against KB in Pakistan so far. Genome wide association study (GWAS) was conducted on a set of 199 wheat germplasm collected from Pakistan. In this study 31,000 single nucleotide polymorphism markers were developed by 90K SNP array technology. A linear mixed model in GWAS, accounting for population structure, was fitted to identify significant genomic regions [-log(P) ≥ 4.0] on 6 different chromosomes i.e. 1A, 1D, 2D, 3B, 4A, 5A with novel loci. Candidate genes, through wheat genome assembly, were identified as putative genes related to KB resistance including kinase like protein family. The results of this study can be useful in wheat breeding through marker assisted selection for KB resistant varieties.
Evaluation of various Synthetic Insecticides against Thrips (Thrips tabaci) i...Agriculture Journal IJOEAR
Abstract— Cotton (Gossypium spp.) popularly known as ‘white gold’ is one of the most ancient important cash crop of India. Apart from its value as fibre, it has great potential to be used as edible oil, food for animals and other by products like particle board and boxes. The development of Bt cotton containing a genetically introgresses endotoxin gene from the gram negative soil bacteria (Bacillus thuringiensis Hubner) represents a significant technological land mark in the global cotton research. Thrips is a major sucking pest on cotton crop, causing quantitative and qualitative losses to cotton. An experiment was conducted at Agriculture Research Station, Sri Ganganagar in Randomized Block Design with 10 treatments including control and replicated three times, to evaluate various insecticides against thrips in Bt cotton. The study revealed that maximum reduction (56.00%) in thrips population was recorded with the treatment of Acephate 75% SP, followed by Imidacloprid 17.8% SL (49.66%). Both the treatments were at par and significantly superior over the other treatments. The phytotoxic effect on crop could not be observed during the experimental period.
Influence of Plant Growth Regulators and Explant Type on Multiple Shoot Induc...Agriculture Journal IJOEAR
Abstract— Sesamum indicum L. is used as an important oil crop in the world. For establishing of a simple and a rapid system for in vitro culture of sesame shoot tips and hypocotyls explants were cultured on MS media with differtent combinations and concentrations of PGRs. On medium with 5 mgl-1BA plus 1 mgl-1 IAA and 1 mgl-1 ABA mutliple shoot induction on explants was occurred. Multiple shoot indution on medium supplemented with 2 mgl-1BA and 0.3 mgl-1 NAA happen with a short phase of callusing. Also MS medium with 3 mgl-1 2,4-D and 0.5 mgl-1 kinetin was a suitable medium for inducing of somatic embryogenic calli with the frequency of sub-culturing potential. Regenerated shoots on both media rooted on MS medium plus 1.5 mgl-1 NAA and 0.03 mgl-1 BA and whole regenerated plantlets formed.
Influence of phosphorous acid application on the accumulation of total phenol...Innspub Net
One mechanism used by coconut plant to protect itself against Phytophthorakatsurae is linked to total
polyphenols production. This study aimed to investigate the impact of phosphorous acid plant treatment on the
production of total polyphenols in coconuthusk, as part of chemical control.The study was conducted on two
coconuts cultivars (EGD and PB 121+) with four doses of phosphorous acid [Control, 2.8 g (TA), 5.6 g (TB), 11.2 g
(TC)]. At each sampling, the husks were processed and extracts were prepared for total polyphenols assays. There
was significant difference between EGD and PB 121+ total polyphenols production (p<0.001).The interaction
between coconut variety and phosphorous acid doses was also significant.The interaction EGD and TC had the
highest total polyphenols accumulation of 4838.5 µg/g of fresh weight (FW). For PB121+, the highest total polyphenols accumulation of 6433.71 µg/g FW was obtained from the interaction between PB121+ and T0. From this observation, it could be statedthat phosphorous acid only triggers the treated plantdefense mechanisms to produce total phenolic compounds when attacked by a pathogen. Get more articles at: http://www.innspub.net/volume-7-number-3-september-2015-ijaar/
Evaluation of herbicides and their combinations for weed control in wheat (Tr...IJEABJ
The field experiment was conducted at the Student’s Research Farm, P.G. Department of Agriculture, Khalsa College, Amritsar, Punjab, to study the evaluation of various herbicides and their combinations on wheat during 2016-17. The experiment was laid out in randomized block design with seven treatments such as weed free, weedy check, pendimethalin 2.5L/ha, pendimethalin 2.5L/ha + clodinofop 400 g/ha, pendimethalin 2.5L/ha + sulfosulfuron 32.5g/ha , pendimethalin 2.5L/ha + pinoxaden 1000 ml/ ha, pendimethalin 2.5L/ha + atlantis 400g/ha and replicated thrice. Results revealed that pendimethalin 2.5 L/ha + atlantis 400g/ha was found effective to control weed population and produced higher number of grains per ear and enhanced grain yield upto 62.3 per cent over weedy check.
Evaluating Some Insecticides for Controlling the Sunn Pest Eurygaster Spp. Pu...CrimsonpublishersMCDA
Evaluating Some Insecticides for Controlling the Sunn Pest Eurygaster Spp. Puton (Hemiptera: Scutelleridae) Under Field Conditions by Mohammed Z Khalaf in Modern Concepts & Developments in Agronomy
Influence of Various Intercrops on Pod Borers in Black Gramijtsrd
The aim of this study was to observe the influence of various intercrops on pod borers in black gram under rain fed condition. Among the different intercrops studied, marigold recorded the lowest mean population of spotted pod borer (0.74 larvaplant) and gram blue butterfly larva (0.88 larvaplant)and natural enemies like Coccinellids (2.68 beetlesplant) and spider population (1.73 spiderplant) was maximum in black gram intercropped with maize. The maximum equivalent yield was obtained from black gram intercropped with marigold (6.04 qha) followed by black gram intercropped with maize (5.24 qha).In conclusion marigold proved to be effective intercrop to control major pod borer and also enhance the population of natural enemies. Selvam. K | Dr. D. S. Rajavel"Influence of Various Intercrops on Pod Borers in Black Gram" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018, URL: http://www.ijtsrd.com/papers/ijtsrd15908.pdf http://www.ijtsrd.com/other-scientific-research-area/enviormental-science/15908/influence-of-various-intercrops-on-pod-borers-in-black-gram/selvam-k
Hassan Abdi1*, M. Taheri Mazandarani2
1, 2Research Instructor, Department of Seed and Plant Improvement, Agricultural and Natural Resources Research Center, Tehran, Iran
ABSTRACT- In order to study drought tolerance indices and identify drought tolerant genotypes in wheat, 40 improved
wheat varieties (three digits and thirty-seven new lines) in a randomized complete block design with three replications
under normal conditions and drought stress (50% flowering) in 2011-2012 on Agriculture and Natural Resources Research
Center of Tehran province were studied. Under normal grain yield and drought tolerance quantitative indicators such as
the average productivity, geometric mean productivity, stress tolerance, harmonic mean, sensitivity to stress, stress
tolerance index were calculated. 6, 37, 38 and 39 genotype with the highest values of mean productivity, geometric mean,
harmonic and stress tolerance index were average. 5, 19 and 40 genotypes maximum of sensitivity to stress and drought
tolerance and sensitivity respectively. Biplot analysis showed that genotype vectors in the vicinity of 37.38 and 39
indicators mean productivity, geometric mean productivity, stress tolerance index and harmonic mean as drought tolerant
genotypes. Evaluation shows that the studied genotypes 37.38, 39 and 27 were tolerant.
Key-words- Bread wheat, Stress tolerance indices
Radiosensitivity and Seedling Growth of Several Genotypes of Paddy Rice Mutan...AI Publications
Researchers use mutation induction in rice to create high genetic diversity. The basic population with high genetic diversity will facilitate the selection process for the desired good characters. This study aimed to determine the optimal dose that induces the highest genetic diversity in four lowland rice genotypes. The research materials were four genotypes of lowland rice, namely “G10”, “G16”, “Baas Selem”, and “Inpago Unram-1”. Gamma irradiation was carried out at the Center for Isotope and Radiation Application (PAIR) BATAN. Each genotype was irradiated at doses of 200, 300, 400 and 500 Gy. The seeding is done in the glasshouse of the Faculty of Agriculture, University of Mataram. Observations were made on the number of growing seeds, plant height and number of leaves. The LD50 value was determined based on the results of the regression analysis of the number of growing seeds at the four irradiation doses plus control (0 Gy). The results indicated that (1) the numbers of growing seeds decreased as the doses of gamma irradiation increased, (2) the LD50 value of the four rice genotypes ranged from 264 to 518 Gy, (3) the optimal dose of gamma ray irradiation for G10, G16, Baas Selem, and Inpago Unram-1 were 264 Gy, 398 Gy, 316 Gy and 518 Gy, respectively. (4) Among the four rice genotypes teasted, “G10” mutant was the most sensitive to gamma ray irradiation, whereas” Inpago Unram-1” mutant was the least sensitive genotype.
Characterization of post rainy sorghum for cold tolerance in control environm...ICRISAT
Sorghum is sensitive to temperature lower than 15°C, most of the post rainy sorghum growing areas of India coincides with low temperature stress during flowering to seed set stage. In sorghum cold temperature at flowering seem to be more detrimental as it interacts with viable pollen production or pollen shedding which result in low yield. Hence the experiment was conducted to characterize a set of 16 sorghum genotypes which includes nine cultivars and seven hybrid parental lines in a control environment research facility at ICRISAT, India with three different temperature treatments. The three Day/Night temperature treatments were T1 (25°C/10°C), T2 (25°C/5°C) and T3 as control (natural environment).
Colletotrichum sublineola, the causal agent of sorghum anthracnose, infects all above ground parts of the crop. The most pronounced phase of the disease is its foliar phase. In this study, 10 sorghum lines with checks were evaluated in the greenhouse for resistance against C. sublineola. Acervuli germination rate within infected leaves was also recorded. All the 10 sorghum lines along with checks BTX623, TAM428, and PI609251 were susceptible and as expected, SC748 was resistant. Variation among the lines for acervuli germination rate was observed; TAM428 and 1110248 recorded the highest percentage (98.3%) while PI609251 exhibited the lowest rate of acervuli germination (33.3%). Conidia produced from germinating acervuli are critical to the distribution and spread of the disease. However, conidia produced within the acervuli do not usually germinate due to the presence of self-inhibitor compounds. Thus, these self-inhibitors that may occur in the acervuli could explain the difference in levels of susceptibility among sorghum germplasm.
A total of 59 converted sorghum lines and 6 checks were evaluated for resistance to two foliar fungal diseases, anthracnose and downy mildew (SDM) in 2008 and 2009 growing seasons at the Texas A&M AgriLife Research Farm, College Station, Texas. In 2008, 23 lines exhibited resistance (35%), 29 susceptible (45%) and 13 variable responses (20%) while 15 lines showed resistance (28%), 31 susceptible (57%), and 8 variable responses to anthracnose in 2009. Nine lines SC748, PI534101, PI534073, PI533950, PI534155, PI533802, PI533776, PI533911 and PI533759 exhibited anthracnose resistance response in both years. Significantly a wide range of 8 to 89% SDM incidence was observed in the study. None of the lines recorded SDM resistance reaction in both years. However, 15 lines PI534119, PI533983, PI597970, PI534160, PI570726, PI534161, PI534112, PI576374, PI533753, SC748, PI533991, PI569998, PI534050, PI534155 and PI533898 recorded moderate resistance to SDM incidence and recommended for use in further breeding programs. There was a positive significant correlation (P = 0.0392) between anthracnose and SDM, indicating that the lines showing higher SDM incidence favors higher anthracnose infection. Significant correlation between precipitation and SDM was also noted. SC748 and PI534155 exhibited resistance to anthracnose and downy mildew diseases and hold promise for utilization in breeding programs as potential checks.
Drought stress is one of the major abiotic factors affecting seed germination and plant growth especially in arid and semi-arid regions. In this study, we investigated the effects of drought stress on seed germination and seedling growth of five varieties of rapeseed. Seven drought stress levels of zero (control), -3, -5, -7, -9, -11 and -13 bars were performed using polyethylene glycol-6000 (PEG-6000). A completely randomized design with three replications was used for this experiment. Germination percentage (GP), germination rate (GR), mean germination time (MGT), root length (RL) and shoot length (SL) were measured to evaluate the varieties response to PEG-induced drought stress. Drought stress, variety and the interaction drought × variety had a significant effect on all studied parameters. GP and GR decreased with the increase in stress level, while MGT increased. There were no seeds germinated for all varieties at -11 bars and -13 bars. Shoot length decreased with increasing drought stress but different varieties show different performance under stress environment. Root length decreased with increasing level of severe drought stress. However, the presence of moderate drought stress could even improve the root growth of the investigated varieties. The varieties ‘INRA-CZH2’ and ‘INRA-CZH3’ exhibited the highest germination percentage and the best early seedling growth. Thus, they could be recommended for environments with early cropping cycle drought.
Effect of Post Emergence Herbicides on Growth of Wheat Crop and Their Associa...ijtsrd
The field experiment was conducted during Rabi season of 2019 20 on sandy loam soil at Agricultural Research Farm Pili Kothi , Department of Agronomy, Tilak Dhari Post Graduate College, Jaunpur U.P. . The “Effect of post emergence herbicides on growth of wheat crop and their associated weeds” The experiment comprised of nine treatment combinations and tested in randomized block design RBD with four replications. Experiment consisted of one factors, viz. seven different herbicides in different doses different time applied weed control of wheat crop analysis in superior herbicide in weed control of wheat crop t1 Sulfosulfuron at 0.03 kg a.i ha. Post emergence 28 DAS, t2 Metribuzin at 0.2kg a.i ha. Post emergence 28 DAS, t3 Carfentrazone ethyl at 0.025kg a.i ha. Post emergence 28 DAS, t4 Carfentrazone ethyl at 0.02kg a.i ha. Post emergence 28DAS, t5 Metsulfuron methyl at 0.004kga.i ha.Post emergence 28 DAS, t6 Sulfosulfuron Metsulfuron methyl at 0.03 0.004 kg a.i ha. Post emergence 28 DAS, t7 2, 4 D at 0.500 kg a.i ha. Post emergence 32 DAS, t8 Weed free two hand weeding , t9 Weedy check and results obtained in t6 Sulfosulfuron metsulfuron methyl 0.030 0.004 kg a.i ha 28 DAS superior compare to weedy check and similar in t8 weed free plots. Application of t6 Sulfosulfuron metsulfuron methyl 0.030 0.004 kg a.i ha 28 DAS Were recorded in minimum density of weeds m2 more number of tillers, recorded crop dray matter and at remain least weeds dry matter recorded gm2 as compare to other treatments. Neeraj Prajapati | Dr. Shrish Kumar Singh "Effect of Post-Emergence Herbicides on Growth of Wheat Crop and Their Associated Weeds" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-6 | Issue-3 , April 2022, URL: https://www.ijtsrd.com/papers/ijtsrd49687.pdf Paper URL: https://www.ijtsrd.com/engineering/agricultural-engineering/49687/effect-of-postemergence-herbicides-on-growth-of-wheat-crop-and-their-associated-weeds/neeraj-prajapati
Effects of Herbicides on Growth and Yield of Wheat Crop Triticum Astivum L.ijtsrd
One year field experiment was conducted during rabi season of 2019 20 at the agricultural research farm Pilikothi Tilak Dhari Post Graduate College Jaunpur U.P. The experiment comprised of nine treatments viz. weedy check, weed free two hand weeding 30 and 45 DAS , Sulfosulfuron at 0.025 kg ha 1, Metribuzin at 0.2 kg ha 1, Carfentrazone ethyle at 0.02 kg ha 1Carfentrazone ethyle at 0.025 kg ha 1, Metsulfuron methyle at 0.004 kg ha 1, Sulfosulfuron Metsulfuron methyle 0.030 0.004 kg ha 1 and 2, 4 D at 0.500 kg ha 1, replicated four times in Randomized Block Design. Wheat variety HD 2967 was used as attest crop. Application of Sulfosulfuron Metsulfuron methyle 0.030 0.004 kg ha 1 significantly increased the plant height and dry matter accumulation at different growth stages over weedy check resulted into higher yield attributes viz. effective plant population in per m2 920.25 at harvesting time, grain ear 1 49.25 and 1000 grain weight 40.00 g . Consequently, highest grain 4546.00 kg ha 1 , Straw 6214 kg ha 1 and biological yield 10761.50 kg ha 1 were through controlling weeds by Sulfosulfuron Metsulfuron methyle after two hand weeding which was at per Carfentrazone ethyle at 0.025kg ha 1 3908.25,5811.50 and 9719.75 kg ha 1 followed by Carfentrazone ethyle at 0.020 kg ha 1 and proved significantly superior over rest of other treatments. Abhijeet Kumar Patel | Dr. Shrish Kumar Singh | Rakesh Bind | Subhash | Aravind Kumar Patel "Effects of Herbicides on Growth and Yield of Wheat Crop (Triticum Astivum L.)" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-6 | Issue-3 , April 2022, URL: https://www.ijtsrd.com/papers/ijtsrd49647.pdf Paper URL: https://www.ijtsrd.com/other-scientific-research-area/other/49647/effects-of-herbicides-on-growth-and-yield-of-wheat-crop-triticum-astivum-l/abhijeet-kumar-patel
Effects of Sulfonylurea Herbicides on Protein Content and Antioxidants Activi...INFOGAIN PUBLICATION
Herbicides have been used in the crop field to increase the crop productivity and grain yield. But unfortunately since long back all research papers and articles showed the effect of this herbicide on the non-target organisms. The purpose of this study was to test the toxicity of two herbicides (Sekator and Zoom) on the biochemistry of hard wheat: Triticum durumDesf and common wheat: Triticumaestivum L. The herbicides were applied at tillering stage in the dose full recommendeddoses. After eight days of treatment leaves were collected to determine differentparametersof proteincontent and enzyme activity involved in the antioxidant system (ascorbate peroxidase: APX).The results validated by statistical analysis revealed that there was a highly significant decrease in proteincontent in plant samples treated with the herbicide Zoom in Hidhab variety. By contrast, exposure to the herbicide Sekator causes significant variation in APX activity. Peroxidase activity were significantly decreased in Waha variety but it was significantly increased in Hidhab (HD), and APX activity increased compared with controls in HD treated with Zoom herbicide.The decrease in protein content is an indication of reduction in the growth of the plants leading to a decrease in the yield, while increased level of peroxidase activity pointed to the occurrence of a scavenging mechanism.
MS medium supplemented with different
concentrations of auxins 2,4-dichloro-phenoxyacetic acid (2,4-D),
α-naphthalene acetic acid (NAA) and combination with kinetin
were studied to obtain a suitable protocol of callus initiation of
Trigonella foenum graecum. Callus was induced from hypocotyls
and cotyledons explants which were collected from the seedlings
of the mentioned plant. The explants were cultured in MS
medium supplemented with two auxins 2,4-D and NAA
separately with different concentrations (0.0 as control, 0.1, 0.5,
1.0, 2.0, 3.0, 4.0 and 5.0 mg/l). Concentration of kinetin (0.5 mg/l)
was used in combination with all concentrations of 2, 4-D and
NAA hormones. The callus was successfully induced in all
different concentrations of two mentioned auxins and
combinations of different concentrations of two auxins separately
with (0.5 mg/l) of kinetin. No callus formation was observed in
the absence of plant growth regulators. Hypocotyl explants of
T.foenum- graecum were much better in inducing callus than
cotyledons explants. Combinations of NAA+Kin and 2,4-D+Kin
were found to be more effective for inducing callus from
hypocotyls explants compared to 2,4-D and NAA alone, at the
same time callus induced by 2,4-D using cotyledons explants
gave the best results compared to the other hormone. Among the
different concentrations of auxin and combinations with kinetin
,the highest mean of callusing index from hypocotyls segments
was (3.50±0.15) with 100% 0f callusing in sixth week by 4.0 mg/l
NAA+ 0.5mg/l Kin. In the case of callus induction from
cotyledons segments the highest mean of callusing index
(2.41±0.18) with 100% of callusing in sixth week was observed by
1.0 mg/l 2, 4-D
Diversity of drought tolerance and seed yield in sunflower (Helianthus annuus...Innspub Net
Randomized complete block design with four replications in two drought and non-drought environments was used for this study. Drought resistance indices were calculated based on seed yield in stress and non-stress conditions. The results showed that GMP and STI were the best drought resistance indices so had the positive and significant correlation with Yp and Ys. Three dimensional graph showed that RFG5*AF80, G-543 and Farokh were the drought resistant hybrids. These hybrids had the highest amount of Yp, Ys, GMP and STI that revealed the highest yield potential as well as drought tolerance in these genotypes. Because of that these hybrids have promised potential to cultivate in drought prone environments. Regression analysis revealed that the traits grain filling rate, grain filling duration and water use efficiency accounted for 97.0% of total variation exist in seed yield. Path coefficient analysis demonstrated the highest and positive direct effect of grain filling rate and grain filling duration on seed yield in sunflower hybrids. Water use efficiency had low direct effect while high indirect effects via grain filling duration on seed yield. Therefore, the study revealed the importance of total grain filling rate and grain filling duration as indirect selection criteria for genetic improvement of seed yield in sunflower breeding programs especially in early generations. On the other hand, indirect effects of water use efficiency through grain filling duration on seed yield have promising result in selection programs. Get the full articles at: http://www.innspub.net/volume-6-number-5-may-2015-jbes/
Finding a sustainable solution to the problem of climate change is the first step to reduce food insecurity and malnutrition in developing countries. In Côte d’Ivoire the oilseed Citrullus lanatus constitutes a source of income for farmers. The lack of knowledge on the suitable sowing dates of this plant engenders it low production. Thus to resolve this problem, some field trial were carried out in Gbokora (Daloa). An experimental design with three blocs randomized was set up. Experimentation consisted to realize a sowing during two growing seasons: season 1 (S1) and season (S2). For each season five sowing dates separated with two weeks were realized: Early 1 (E1), Early 2 (E2), Middle (M), Later 1 (L1) and Later 2 (L2). It emerges from this study that to improve the yield of this plant, the crop should be grown during the first season. In addition, planting must be done between mid-March and the beginning of April. This period corresponds to the beginning of the rainy season in the study area. However, if the farmers wish to produce the plant in the second growing season, they will have to wait until the beginning of August, which corresponds to the short rainy season.
Evaluation of fungicides and biological agents for the management of mango an...Agriculture Journal IJOEAR
Abstract— Mango is an important fruit crop in area and production in Gujarat also, where it is cultivated over an area of about 130.1 thousand hectares with annual production of 911.3 thousand tones with productivity of 7.01 tones/ha. Its plantation has become quite popular in the districts of Valsad, Junagadh, Navsari, Kutch, Surat, Amreli and Bhavnagar because of favourable agro-climate condition. Mango is affected by number of diseases at all the stages of its development right from plant in nursery to the fruit in storage or transit. Mango is prone to many fungal diseases like Anthracnose, Rhizopus rot, Stem end rot, Penicillum rot, Black mould rot, Mucor rot, Phyllosticta rot, Pestalotiopsis rot, Macrophoma rot and powdery mildew, leading to heavy loss in yield. Among these diseases, anthracnose is the major disease of mango as it occurs at all the growing parts including leaves, twigs, flowers, fruits except root and trunk throughout the year. Anthracnose caused by Glomerella cingulata (Stoneman) Spauld and H Schrenk (anamorph: Colletotrichum gloeosporioides (Penz.)) appear to be more severe causing devastation of mango fruits during grading, packing, transportation, storage and marketing (Pathak, 1980).
The ethanol extracts of Ficus asperifolia, Mormordica charantia, Anacardium
occidentals and Psidium guajava were evaluated sole and in treatment combinations at 25, 50 and
75mg ml-1 concentration levels against the mycelial growth of Macrophomina phaseolina of
Cowpea. The pathogen was cultured on plates containing botanicals amended Potato Dextrose
Agar (PDA) in three replicates while only ethanol treated PDA tested plates served the control
experiment. The radial growths were recorded at 4th, 6th and 8th day after inoculation. Data
obtained were analysed using the SAS software program version 9.2. The extract of Mormordica
charantia was the most effective in the botanical treatments alone. The most significant inhibition
of Macrophomina phaseolina were observed from the combined treatments of Ficus asperifolia,
Mormordica charantia and Anacardium occidentals (3.11 cm), followed by Mormordica
charantia and Psidium guajava (3.29 cm), then combination of four extracts; Ficus asperifolia,
Mormordica charantia, Anacardium occidentals and Psidium guajava (3.53 cm), then
Mormordica charantia and Anacardium occidentals (3.84 cm). Other treatments, either alone or in
combination produced significant result compared to the control experiment (6.94 cm). However,
the efficacy of botanicals increased with concentration and also significantly correlated with time
and reduction in mycelia extension of the pathogen. More so, variability in the antifungicidal
potentials of the botanicals on Macrophomina phaseolina ranges from 15.93% to 34.06%
according to Eigen proportions. The treatment combinations of; Ficus asperifolia, Mormordica
charantia and Anacardium occidentals at 75mg ml-1 concentration level produced the most
inhibitory effect against Macrophomina phaseolina in vitro. However, the untreated plates did not
show inhibitory effect on the mycelial growth of the pathogen. Therefore, combined treatments of
botanicals could be a potential source in the practice of plant disease control.
Weed control is an important agronomic practice that improves growth and maximizes yield in maize. An experiment was carried out to investigate the ‘effect of different weed control methods on the growth and yield of maize (Zea mays L.) in the western highlands of Cameroon. The work was carried out during the 2017/2018 main cropping season from the 14th of March to the 14th of July at the Institute of Agricultural Research for Development (IRAD) Bambui experimental field. The experiment was laid out in a Randomized Complete Block Design (RCBD) and replicated three times. The experiment comprised of seven treatments: weedy check or control (T1), constant hand hoeing (T2), delay hand hoeing (T3), pre-emergence herbicide application of Atrazine 90 DF ( 0.9 kg ha-1) (T4), post-emergence herbicide application of Ultramais 100 SC (1.9 litre ha-1) (T5), pre- herbicide application of Atrazine 90 DF ( 0.9 kg ha-1) + Ultramais 100 SC (1.9 litre ha-1) (T6) and delay post-emergence herbicide application of Ultramais 100 SC (1.9 litre ha-1) (T7). The white maize variety CHC 201 (“KASAI”) was used during the experiment and sown in plot sizes of 4 m x 5 m with a planting density of 80cm by 50cm with 2 plants per station with the aim of achieving a plant population of 50,000 plants ha-1. All agronomic practices were followed from planting to harvesting. The data recorded were plant height, number of green leaves per plant, leaf area, stem girth, days to 50% tasseling, days to 50% silking, ear height, ear length, ear girth, number of gain rows per ear, number of gains per ear, 1000 grain weight and grain yield.. The data collected were analyzed with the aid of STATGRAPHICS Plus 5.0 Software and ANOVA was run to find the differences between the various treatments. The highest 1000 grain weight (314.13g) came from the pre-emergence plus post-emergence herbicide application treatment and did not differ significantly (P˃0.05) from the constant hand hoeing treatment (307.83g). The lowest 1000 grain weight (234.67g) was seen in the weedy check treatment. The constant hand hoeing had the highest grain yield (6.27 ton ha-1) and this did not differ significantly (P˃0.05) from the pre-emergence plus post-emergence herbicide application treatment (6.07 ton ha-1). The lowest grain yield (3.18 ton ha-1) was seen in the weedy check treatment. From the study, the pre-emergence plus post-emergence herbicide application may be recommended for increasing maize yield particularly in the case of high scale production.
Seasonal Incidence and Varietal Response of Gram against Helicoverpa armigera (Hubner) at Talwandi Sabo, Punjab
http://dx.doi.org/10.21276/SSR-IIJLS.2020.6.4.3
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
1. International Journal of Scientific Engineering and Research (IJSER)
www.ijser.in
ISSN (Online): 2347-3878
Volume 1 Issue 3, November, 2013
Response of Sunflower under Charcoal Rot
(Macrophomina phaseolina) Stress Conditions
Sanaullah Jalil1
, Hafeez Ahmad Sadaqat2
, Hammad Nadeem Tahir2
, Shafaullah3
, Asim Hayat4
, Niaz Ali1
1
Rice Programme, Crop Science Institute, National Agricultural Research Centre, Islamabad, Pakistan
2
Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan
3
Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan
4
Land Resources Research Institute, National Agricultural Research Centre, Islamabad, Pakistan
Abstract: Charcoal rot (Macrophomina phaseolina) covered a wide host range and is responsible for causing losses on more than 500
cultivated and wild plant species. So far in Pakistan it has been reported to cause disease on 67 economic hosts including field crops,
pulses, flowers and vegetable. It was first reported in 1982 from sunflower field in Pakistan. The fungus is reported to be soil, seed and
stubble borne. Twenty four (24) sunflower genotypes were analyzed under charcoal rot (Macrophomina phaseolina) stress conditions.
The accessions were planted in a factorial randomized complete block design with three treatments within three replications. Accessions
x treatments interaction are significant (P < 0.05) for oil contents and disease incidence. There are three accessions HBRS-5, G-46 and
G-54 found highly susceptible to charcoal rot while HBRS-1, A-12 and A-79 are moderately resistance to charcoal rot among the 24
accessions of sunflower. While the remaining accessions have their response from moderate susceptible to susceptible in disease
incidence. Due to moderate resistance to charcoal rot HBRS-1, A-79 give high value of yield attributes. These accessions are
recommended for high yield production in the field while the other accessions are not recommended due to loss in production regarding
their susceptibility to charcoal rot (Macrophomina phaseaolina) disease.
Keywords: Sunflower; Accessions; Macrophomina phaseolina; Charcoal rot; Disease incidence
1. Introduction
Sunflower is a rich source of edible oil. It has a nice fit in the
cropping system in Pakistan. It has the ability to meet
domestic needs of the country. Sunflower diseases especially
head rot followed by charcoal rot are the serious threat to
sunflower growers in the country [1, 2]. The causal agent for
charcoal rot (Macrophomina phaseolina) found the most
important pathogen on sunflower and more than 500 plants
[3]. It is very serious for sunflower crop throughout the
world. Although it is monotypic and no physiological races
have been reported, it has high genetic variability resulting
in a wide host range, which in turn means that crop rotation
is not an effective strategy to combat the disease [4]. In
sunflower, losses from charcoal rot can reach 60 to 90% if
the conditions are favorable for infection [5]. The present
studies were planned to evaluate response to charcoal rot,
their heritability and genetic advance in different yield
attribute of all sunflower accessions under charcoal rot
(Macrophomina phaseolina) stress condition. There is
evaluated some sunflower genotypes to Macrophomina
phaseolina [6]. The reaction of genotypes was very different
to the agent of disease. Development of resistant varieties is
the cheapest source for management. The use of resistant
cultivars is considered as one of the most important methods
[7]. The present project was under taken with the objective
of screening of sunflower germplasms against charcoal rot of
sunflower. Seed yield is combination of many traits, where
polygenic in nature and it is difficult to make direct selection
for these traits. Sunflower breeders reported different types
of characters associations [8, 9, 10, 11, 12, 13].
Objective: Screening of disease resistance variety among
various genotypes for improving sunflower seed yield under
charcoal rot stress conditions
2. Material and Methods
2.1 Experimental Conditions
The experiment was conducted in the research field of the
Department of Plant Breeding and Genetics, University of
Agriculture, Faisalabad, Pakistan during 2008. The agro-
climatic data on maximum and minimum temperature and
total monthly rainfall during the crop season are presented in
Figure 1.
Metrological Data Chart
0
5
10
15
20
25
30
35
40
sep oct nov dec
Months
Maximum temp. Rainfall Minimum temp.
Figure 1: Metrological Data Chart
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2.2 Experimental Material
The experiment consisted of 24 sunflower accessions (Table
1) developed and maintained by the Sunflower Research
Group, Department of Plant Breeding and Genetics,
University of Agriculture, Faisalabad, Pakistan during 2008.
Macrophomina phaseolina inoculum was collected from
Department of Pathology, University of the Punjab, Lahore,
Pakistan.
Table 1: List of Accessions
S. No Accessions Sr. No. Accessions
1 G-2 13 G-43
2 A-79 14 G-82
3 G-30 15 G-54
4 G-46 16 G-57
5 A-19 17 HBRS-5
6 G-3 18 A-50
7 G-100 19 A-60
8 G-50 20 HBRS-1
9 G-40 21 G-16
10 G-34 22 A-48
11 G-12 23 G-5
12 G-61 24 G-45
2.3 Experimental Layout
The experiment was laid out according to factorial
experiment in a randomized complete block design with
three replications having following treatments: (T1)
Application inoculation with fungal isolate (Macrophomina
phaseolina) at seedling stage of crop along with application
of fungicide to control the disease. (T2) Application of
inoculation with fungal isolate (Macrophomina phaseolina)
at seedling stage of crop with none use of any fungicide for
disease control. (T3) Normal/Control (There were no
inoculation with fungal isolate at seedling stage and no
application of fungicide to control the disease). Identical
cultural and agronomic practices were applied to all the
experimental units. The experimental unit consisted of single
row plot of 3.3 m length with plant to plant and row to row
distances of 25 cm and 75 cm, respectively.
2.4 Inoculation Method
Inoculum was applied to the plants before the emergence of
heads through flooded method when the field was irrigated.
All precautions were taken at the time of inoculation. All
recommended agronomic practices were applied to the crop
uniformly.
2.5 Data recording
The data were recorded on ten randomly selected plants of
each entry from each replication for head diameter, number
of achenes per head, head weight, 100-seed weight, seed
yield and oil contents. Charcoal rot disease reaction was
recorded by carefully examining the external disease
symptoms on stem of the inoculated plants. A six point 0-5
(0= no disease symptoms on the external stem to 5=
premature death) disease severity rating scale for charcoal
rot of sunflower caused by Macrophomina phaseolina was
used according to the description of James [14] as shown in
table 2.
Table 2: Scale for ranking of disease incidence
Grade Disease Incidence Status
0 0% Immune
1 1-9% Resistant
2 10-24% Moderate Resistant
3 25-49% Moderate Susceptible
4 50-74% Susceptible
5 75% and above Highly Susceptible
2.6 Biometrical analysis
The data collected for above mentioned characters were
statistically analyzed for variance using the method given by
Steel [15]. Phenotypic and genotypic correlation coefficients
were calculated utilizing the procedure described by Kown
and Torrie [16]. This model was extensively used by
sunflower researchers [17, 18, 19, 20]. Seed yield was kept
as resultant variable and other characters as casual variables.
3. Results and Discussion
A perusal of the results showed (Table 3) that accessions
differed significant (P < 0.05) for all the characters under
study in which 100-seed weight, head weight and oil
contents are highly significant. Accessions x treatments
interaction are significant (P < 0.05) for oil contents and
disease incidence only. Macrophomina phaseolina has
marked effect on different growth and yield parameter of
sunflower crops. Charcoal rot cause reduction in plant height
and head diameter by 13.77, 75.56 and 10.77 percent
infected seeds from infected plants weight 30.46 percent less
than healthy plants [21]. Head diameter, Seed yield per plant,
100-seed weight, head weight and number of achenes per
plant showed significant differences existed among sunflower
accessions under study and high significant differences
existed among the treatments and accessions whereas there
were non-significant differences among the interaction of
accessions and treatments.
Table 3: ANOVA Analysis
Source of
Variance
Reps. Treatments (Tr.)
Accessions
(Acc.)
Tr. x
Acc.
Error
DF 2 2 23 46 142
HD 3.26* 116.85** 8.51* 0.1 0.94
SY/P 3.27* 11.30* 10.27* 0.061 55.74
100-SW 5.94* 76.75** 19.61** 0.38 0.31
Ach/P 4.80* 3.29* 6.43* 0.86 1331.63
HW 0.73 9104.42** 1815.51** 0.01 2.76
OC 4.03* 1511.88** 446.92** 9.98* 0.73
DI 0.30 210.63** 11.42* 2.04* 0.46
*Significant at 5% level of probability
HD = Head diameter, SY/P = Seed yield per plan, 100-SW
= 100-Seed weight, Ach/P = Achenes per plant, HW = Head
weight, OC = Oil contents, DR = Disease incidence,
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The impact of Macrophomina phaseolina for Charcoal rot
disease reaction was recorded by carefully examining the
external disease symptoms on stem of the plants at the
maturity stage of crop in all three treatments. Symptoms
suggestive of charcoal rot were observed on oilseed
sunflower plants [22]. Symptoms, first observed on plants
approaching physiological maturity, consisted of silver-gray
lesions girdling the stem at the soil line, premature plant
death, and reduced head diameter. The pith in the lower stem
was either completely absent or was compressed into
horizontal layers. Black, spherical micro-sclerotia were
observed in the pith of the lower stem, just underneath the
epidermis, and on the exterior of the tap root. Response of
sunflower under charcoal rot stress condition are exhibit in
Table-4 that all the accessions are variable in response to
disease and none of accessions are found to be completely
resistant against Macrophomina phaseolina. Study on
pathogenicity of M. phaseolinaindicated high levels of
variation in pathogenicity of the fungus [23]. Investigation
of Macrophomina phaseolina isolates showed great
variability in pathogenicity among isolates from different
host species [24]. Therefore, HRBS-1, G-12 and A-79 are
found moderate resistance to charcoal rot disease because
they have the disease incidence amoung the 10-24%
according to ranking scale. The accession A-50, G-43, G-5,
G-40, G-100, G-61, A-48, G-45, G-2 and G-3 have 25-49%
disease incidence are moderate susceptible and G-57, G-30,
G-50, G-60, A-60, G-82, G-34 and A-19 showed 50-74%
disease incidence are susceptible to disease infection and
cause in reduction of yield of sunflower. HBRS-5, G-46 and
G-54 have disease incidence more than 75% so these
accessions are categorized in high susceptible and strongly
not-recommended for the sowing. HBRS-1 was highly
resistance in 2006 and moderate resistance during 2007 [25].
During 2008, HRBS-1 exhibits as moderate resistance
accession. HRBS-1 is considered as good accession and
recommended for sowing. G-100 also showed deviation in
resistance during 2006 and 2007 as compared with the
results of experiment conducting during 2008 which was
moderate susceptible, which cause reduction in yield of
sunflower. G-46 was susceptible during 2006 and 2007 and
showed highly susceptible disease incidence during 2008.
Therefore, G-46 was not recommended as good accession.
4. Conclusion
The current study describes that mostly sunflower accessions
are susceptible to charcoal rot (Macrophomina phaseolina).
However three accessions (HBRS-1, A-79, G-12) showed
moderate resistance. It is a challenge for scientists to develop
disease resistant, high yielding cultivars with improved oil
contents of sunflower.
Table 4: Response of sunflower accessions to charcoal rot
(Macrophomina phaseolina) disease
Grade
Disease
Incidence
Status Remarks
0 0% Immune Nil
1 1-9% Resistant Nil
2 10-24%
Moderate
Resistant
HBRS-1, A-79, G-12
3 25-49%
Moderate
Susceptible
A-50, G-43, G-5, G-40, G-100, G-
61, A-48, G-45, G-2, G-3
4 50-74% Susceptible
G-57, G-30, G-50, G-60, A-60, G-
82, G-34, A-19
5
75% and
above
Highly
Susceptible
HBRS-5, G-46, G-54
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Author Profile
Sanaullah Jalil has done M.Sc. (Hons.) Agri (Plant
Breeding & Genetics) Scientific Officer at Crop
Science Institute, National Agricultural Research
Centre, Islamabad-45500, Pakistan
Dr. Hafeez Ahmad Sadaqat is working a Professor in Department
Plant Breeding & Genetics University of Agriculture, Faisalabad,
Pakistan
Dr. Hammad Nadeem Tahir is working as Assistant Professor,
Department of Plant Breeding & Genetics University of
Agriculture, Faisalabad, Pakistan
Niaz Ali, has done M.Phil (Plant Genomics &
Biotechnology). Working in Rice Program, Crop
Sciences Institute, National Agricultural Research
Centre, Islamabad-45500, Pakistan
Shafaullah has done M.Sc. (Hons) Agri (Plant Pathology) M.D.
Sana Seed Corporation, Lahore
Asim Hayat has done M.Sc. (Hons) Soil Sciences Scientific
Officer at Land Resources Research Institute, National Agricultural
Research Centre, Islamabad-45500, Pakistan
Paper ID: J201338 92 of 92