Line × tester analysis for yield contributing morphological traits in Triticu...Innspub Net
The present study was carried out for the development of the water stress wheat cultivars with higher grain yield by studying the genetic basis of crucial morphological traits. Nine wheat genotypes were grouped into six lines and three testers and these parents were crossed line x tester fashion. Eighteen crosses including nine parents were planted in the field in randomized complete block design with three replications. Three drought tolerant varieties Chakwal-50, Chakwal-86 and Kohistan-97 were also sown to compare the results in water stress environment. Highest negative GCA effects were observed in WN-36 for plant height (-6.17) and flag leaf area (-1.53), while for peduncle length it was noted in 8126 lines (-1.15). Highest positive GCA effects were observed in WN-32 for a number of grains per spike (5.21), grain yield per plant (2.08) and for spikelet per spike (0.33), while for 8126 and WN-10 the number of tillers per plant (0.67) and spike length (0.25) was found, respectively. The crosses 9451 × WN-25, WN-36 × 8126, WN-10 × 8126 showed highest negative SCA effects for plant height (-8.06), flag leaf area (-2.89), and peduncle length (-2.05), respectively. Moreover, the cross combinations of WN-36 × WN-25, WN-32 × WN-25 and AARI-7 × 9526 showed positive SCA effects for number of tillers per plant (1.52), spike length (0.72) and number of spikelet per spike (0.84) respectively, while the interaction of WN-35 × 8126 crosses showed highest positive SCA effects for number of grains/spike (5.69) and grain yield/plant (2.75). The parental material used in this study and cross combinations obtained from these parents may be exploited in future breeding endeavors.
Seed Setting Efficiency, Leaf Relative Water Content and Yield Traits of some...Premier Publishers
A potted experiment was conducted in the screen house between February and April, 2017. Seeds of five cowpea varieties were obtained and placed in plastic buckets of 7-liter capacity, perforated at the bottom and filled with top soil. Three soil moisture level treatments of Severe Stress (SS), Mild Stress (MS) and Non-Stress (NS) conditions were imposed. Pots were weighed in the morning of each day for the period of eight weeks to obtain daily cumulative water transpired. The experiment was a 5 x 3 factorial combination arranged using completely Randomized Design with six replications. Some of the Growth and Yield indices measured were, Leaf Relative Water Content (%), Seed Setting Efficiency (Ef), Crop Growth Rate (CGR), Pod Growth Rate (PGR), Water use efficiency (WUE), and Seed Yield (kg/ha). From the study, water stress negatively affects leaf relative water content, seed setting efficiency and cowpea yield by inducing reproductive organ abortion during reproductive development of cowpea. Consequently, the crop seed setting efficiency is lowered. Poor seed yield of cowpea under the severe water stress condition occurred as a result of reduced rate of assimilates production caused by water stress which reduced water potential in cowpea leaf and pods. Varieties exhibiting higher (WUE) were recorded more at non stress level and this was recorded for all the varieties except for Oloyin Brown which had higher (WUE) under mild-stress condition. At severe water stress conditions, most of the varieties recorded lower (WUE) except in varieties IT98K-503-1. Water stress reduced leaf relative water content and grain yield of cowpea. Among the varieties evaluated, IT98K-503-1 performed better at Non stress condition with higher seed setting efficiency (1.94), leaf relative water content (86.9%), and seed yield (14.8kg/ha).
Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...AI Publications
Nursery management including optimum seedling density is an important factor for better crop performance. A study was carried out to examine the effect of seedling density on growth attributes of cauliflower seedlings cv. Kathmandu local in the field of Lamjung Campus in Oct., 2018. Experiment consists of four treatments which were replicated five times and laid out in RCBD. Seed spacing treatments viz. 0.5cm x 1.0cm, 1.0cm x 1.0cm, 1.5cm x 1.5cm and 2.0cm x 2.0cm were maintained in a raised nursery beds. Field germination percentage was recorded up to 60% at fourth day after sowing (DAS) whereas in lab it was up to 74%. Above and below ground seedling biomass, unfold leaves area, number of true leaves, plant height and root length were recorded at 23 DAS by destructive method. ImageJ package was used for leaf area measurement. Data were tabulated in MS Excel and analyzed by GenStat. Root length (4.85cm) was significantly higher in spacing of 2cm x 2cm which was at par with 1.5cm x 1.5cm whereas lower in 0.5cm x 1.0cm. Significantly maximum value for fresh weight of root (0.045gm), fresh weight of shoot (0.91gm), dry weight of shoot (0.11gm) and dry matter percentage (12%) was observed in 1.5cm x 1.5cm spacing. Seedlings greater than 1.5cm to 2cm spacing performed better than closer spacing in most of the variable of interests, however, there was no significant differences observed in number of true leaves, leaf area and plant height. A trial with wider spacing considering seedling health is recommended.
Influence of Supporter Substrat on the Rooting Percentage of Kiwifruit Cuttin...irjes
The paper presents the influence of supporter substrate on rooting of greenwood and semi-hardwood
cuttings of kiwifruit. The study was conducted during two consecutive years, 2013-2014, in a private
greenhouse in Lezha, using two periods of taking cuttings: June 5, with greenwood cuttings, and September 5,
with semi-hardwood cuttings. A randomized complete block design (RCBD) with two variants (in substrate
prelate-peat mix (60:40) and substrate prelate 100 %) and three replications, with a plot size of 100 vegetative
cuttings for variant for each replication, was used. Vegetative cuttings were pre-treated with indol-3-butyric acid
(IBA) 3000 ppm and were planted under controlled environmental conditions (air temperature 17-18oC, basal
supporter temperature 22-26oC, and 80-85% RH). In June, the experimental greenhouse was shaded with a black
mesh. Obtained results showed that greenwood and semi-hardwood cuttings of planted in substrate prelate-peat
(60:40) rooted better than cuttings of planted in substrate only prelate, in both planting periods (52.4% versus
46%, and 63% versus 54%). The highest rooting percentages were achieved using semi-hardwood cuttings
planted in September 5 on supporter polite-peat mix substrate (63%) and only polite (54%). Differences
between variants were testified using LSD and statistical ANOVA-tests.
Groundnut shows new traits of tolerance to drought stress conditions under ly...ICRISAT
Previous studies under field conditions have investigated the response of 300 accessions from a groundnut reference collection to drought stress as well as selected contrasting lines. Groundnut is largely grown in rainfed areas in the semi-arid tropics, and known pod yield decrease can reach 72%. Now assessment of a sub-set of 60 genotypes from the groundnut reference collection in lysimeters, which give similar conditions to fields and allow measurement of crop water requirement, could lead to the identification of new sources and/ or traits of tolerance to drought for improving groundnut productivity.
Line × tester analysis for yield contributing morphological traits in Triticu...Innspub Net
The present study was carried out for the development of the water stress wheat cultivars with higher grain yield by studying the genetic basis of crucial morphological traits. Nine wheat genotypes were grouped into six lines and three testers and these parents were crossed line x tester fashion. Eighteen crosses including nine parents were planted in the field in randomized complete block design with three replications. Three drought tolerant varieties Chakwal-50, Chakwal-86 and Kohistan-97 were also sown to compare the results in water stress environment. Highest negative GCA effects were observed in WN-36 for plant height (-6.17) and flag leaf area (-1.53), while for peduncle length it was noted in 8126 lines (-1.15). Highest positive GCA effects were observed in WN-32 for a number of grains per spike (5.21), grain yield per plant (2.08) and for spikelet per spike (0.33), while for 8126 and WN-10 the number of tillers per plant (0.67) and spike length (0.25) was found, respectively. The crosses 9451 × WN-25, WN-36 × 8126, WN-10 × 8126 showed highest negative SCA effects for plant height (-8.06), flag leaf area (-2.89), and peduncle length (-2.05), respectively. Moreover, the cross combinations of WN-36 × WN-25, WN-32 × WN-25 and AARI-7 × 9526 showed positive SCA effects for number of tillers per plant (1.52), spike length (0.72) and number of spikelet per spike (0.84) respectively, while the interaction of WN-35 × 8126 crosses showed highest positive SCA effects for number of grains/spike (5.69) and grain yield/plant (2.75). The parental material used in this study and cross combinations obtained from these parents may be exploited in future breeding endeavors.
Seed Setting Efficiency, Leaf Relative Water Content and Yield Traits of some...Premier Publishers
A potted experiment was conducted in the screen house between February and April, 2017. Seeds of five cowpea varieties were obtained and placed in plastic buckets of 7-liter capacity, perforated at the bottom and filled with top soil. Three soil moisture level treatments of Severe Stress (SS), Mild Stress (MS) and Non-Stress (NS) conditions were imposed. Pots were weighed in the morning of each day for the period of eight weeks to obtain daily cumulative water transpired. The experiment was a 5 x 3 factorial combination arranged using completely Randomized Design with six replications. Some of the Growth and Yield indices measured were, Leaf Relative Water Content (%), Seed Setting Efficiency (Ef), Crop Growth Rate (CGR), Pod Growth Rate (PGR), Water use efficiency (WUE), and Seed Yield (kg/ha). From the study, water stress negatively affects leaf relative water content, seed setting efficiency and cowpea yield by inducing reproductive organ abortion during reproductive development of cowpea. Consequently, the crop seed setting efficiency is lowered. Poor seed yield of cowpea under the severe water stress condition occurred as a result of reduced rate of assimilates production caused by water stress which reduced water potential in cowpea leaf and pods. Varieties exhibiting higher (WUE) were recorded more at non stress level and this was recorded for all the varieties except for Oloyin Brown which had higher (WUE) under mild-stress condition. At severe water stress conditions, most of the varieties recorded lower (WUE) except in varieties IT98K-503-1. Water stress reduced leaf relative water content and grain yield of cowpea. Among the varieties evaluated, IT98K-503-1 performed better at Non stress condition with higher seed setting efficiency (1.94), leaf relative water content (86.9%), and seed yield (14.8kg/ha).
Effect of Seedling Density on Growth Attributes of Cauliflower variety Kathma...AI Publications
Nursery management including optimum seedling density is an important factor for better crop performance. A study was carried out to examine the effect of seedling density on growth attributes of cauliflower seedlings cv. Kathmandu local in the field of Lamjung Campus in Oct., 2018. Experiment consists of four treatments which were replicated five times and laid out in RCBD. Seed spacing treatments viz. 0.5cm x 1.0cm, 1.0cm x 1.0cm, 1.5cm x 1.5cm and 2.0cm x 2.0cm were maintained in a raised nursery beds. Field germination percentage was recorded up to 60% at fourth day after sowing (DAS) whereas in lab it was up to 74%. Above and below ground seedling biomass, unfold leaves area, number of true leaves, plant height and root length were recorded at 23 DAS by destructive method. ImageJ package was used for leaf area measurement. Data were tabulated in MS Excel and analyzed by GenStat. Root length (4.85cm) was significantly higher in spacing of 2cm x 2cm which was at par with 1.5cm x 1.5cm whereas lower in 0.5cm x 1.0cm. Significantly maximum value for fresh weight of root (0.045gm), fresh weight of shoot (0.91gm), dry weight of shoot (0.11gm) and dry matter percentage (12%) was observed in 1.5cm x 1.5cm spacing. Seedlings greater than 1.5cm to 2cm spacing performed better than closer spacing in most of the variable of interests, however, there was no significant differences observed in number of true leaves, leaf area and plant height. A trial with wider spacing considering seedling health is recommended.
Influence of Supporter Substrat on the Rooting Percentage of Kiwifruit Cuttin...irjes
The paper presents the influence of supporter substrate on rooting of greenwood and semi-hardwood
cuttings of kiwifruit. The study was conducted during two consecutive years, 2013-2014, in a private
greenhouse in Lezha, using two periods of taking cuttings: June 5, with greenwood cuttings, and September 5,
with semi-hardwood cuttings. A randomized complete block design (RCBD) with two variants (in substrate
prelate-peat mix (60:40) and substrate prelate 100 %) and three replications, with a plot size of 100 vegetative
cuttings for variant for each replication, was used. Vegetative cuttings were pre-treated with indol-3-butyric acid
(IBA) 3000 ppm and were planted under controlled environmental conditions (air temperature 17-18oC, basal
supporter temperature 22-26oC, and 80-85% RH). In June, the experimental greenhouse was shaded with a black
mesh. Obtained results showed that greenwood and semi-hardwood cuttings of planted in substrate prelate-peat
(60:40) rooted better than cuttings of planted in substrate only prelate, in both planting periods (52.4% versus
46%, and 63% versus 54%). The highest rooting percentages were achieved using semi-hardwood cuttings
planted in September 5 on supporter polite-peat mix substrate (63%) and only polite (54%). Differences
between variants were testified using LSD and statistical ANOVA-tests.
Groundnut shows new traits of tolerance to drought stress conditions under ly...ICRISAT
Previous studies under field conditions have investigated the response of 300 accessions from a groundnut reference collection to drought stress as well as selected contrasting lines. Groundnut is largely grown in rainfed areas in the semi-arid tropics, and known pod yield decrease can reach 72%. Now assessment of a sub-set of 60 genotypes from the groundnut reference collection in lysimeters, which give similar conditions to fields and allow measurement of crop water requirement, could lead to the identification of new sources and/ or traits of tolerance to drought for improving groundnut productivity.
Effect of crop establishment/irrigation techniques and nitrogen levels on gro...Innspub Net
A field experiment was conducted during 2010 and 2011, under three replications. One row in Furrow Irrigated Raised Bed/ every furrow irrigation increased plant height by 7.94 %, stem girth by 46.47 per cent, and dry matter at maturity by 23.69 % over conventional sowing/ conventional irrigation. Similarly, number of leaves increased by 19.26 and 24.65 % leaf area by 25.83 and 26.65 %, over conventional practice at 60 and 90 days after sowing, respectively. Besides, it resulted 1.91 and 1.82 % higher total chlorophyll over conventional practice at 30 and 60 days after sowing, respectively and increased grain by 60.72 %, biological 42.44 % and stover yield by 30.2 % over conventional practice and also resulted 3.43 higher starch and 12.05 % protein content over conventional practice. One row in FIRB/ every furrow irrigation, had 62.1, 51.5 and 42.9 % higher uptake for nitrogen, phosphorus and potassium over conventional practice of crop establishment, respectively. Get more articles: http://goo.gl/FAvGnB
Genetic studies of genotypic responses to water stress in upland cotton (Goss...INNS PUBNET
The present study was carried out to examine the potential in cotton germplasm for breeding water stress tolerant plant material, and understand the genetic basis of different morphological traits related to water stress tolerance. Portioned analysis of variance was employed to obtain good parents for this purposes. The parental genotypes MNH-512, Arizona-6218, CIM-482, MS-39, and NIAB-78 were crossed in complete diallel fashion and F0 seeds of 20 hybrids and five parents were planted in the field in randomized complete block design with three replications during 2010. Simple regression analysis of F1 data revealed that additive-dominance model was quite adequate for all morphological traits. The unit slope of regression lines number of bolls (b = 1.07 ± 9.14), boll weight (b = 0.99 ± 0.11), yield per plant (b = 0.96 ± 0.31), plant height (b = 1.10 ± 0.34), leaf area index (b = 0.82 ± 0.27), and ginning percentage (b = 1.01 ± 0.12) suggested that the epistatic component was absent in the inheritance of all characters studied. The result of various plant characters including seed yield showed drastic effects of water stress as compared with those assessed in non-stressed condition. Leaf area index in the analysis of variance suggested that additive variation was more important for the character. Narrow leaf varieties NIAB-78 and CIM-482 were water stress tolerant while varieties Arizona-6218, MNH-512 and MS-39 were broader leaf showing less resistant to water stress. The information derived from these studies may be used to develop drought tolerant cotton material that could give economic yield in water stressed conditions of cotton belt. Full articles at: http://innspubnet.blogspot.com/2016/08/diversity-and-distribution-of-anuran-in.html
Effect of Varying Rate of Leaf Defoliation on Maize Growth, Development and ...Scientific Review SR
Pot trial was conducted at the Faculty of Agriculture, Kogi State University Anyigba, within the
southern Guinea savanna agro ecological zone of Nigeria, with daily temperature range between 250C - 350C.
The experiment, a Randomized Complete Block Design (RCBD) with eight treatments (defoliation at 25%
above the ear, 25% under the ear, 50% above the ear, 50% under the ear, 75% above the ear, 75% under the
ear, 100% defoliation and no defoliation as control) was replicated four times. Treatment was imposed at ear
initiation. Growth and yield parameters collected were: number of leaves per plant, leaf area, plant height, stem
girth, days to ear initiation, number of cobs/plant, days to crop maturity, cob weight, cob length, seed rows per
cob, 100-seed weight as well as total cob yield/ha. All data collected were subjected to analysis of variance
(ANOVA) and New Duncan Multiple Range Test (NDMRT) was used to estimate the differences among
significant means at 5% level of probability. Prior to imposition of the treatment, anal yzed results indicate no
significant differences between number of leaves at 2, 4 and 6 WAS, as well as plant heights and stem girth at
2, 4, 6, 8 and 10 WAS. However there were significant differences between leaf areas at 4 and 6 WAS. In
addition, there were significant effects of defoliation on cob length and dry cob weight with the highest cob
weight obtained in 25% defoliation carried out above the ear. In addition, there were significant differences in
the number of rows per cob and grain yield per ha with 0% defoliation giving the highest result while the least
was in 100% defoliation. Generally, it was observed that defoliation at any rate and position influenced maize
yield, notwithstanding that the treatment was imposed at cob initiation, an indication that harvest of solar
radiation post cob initiation plays important role on eventual maize yield
Xingxinag, G., M. Li, G. Zongjung, L. Changsong and S. Zuowen, 2009. Allelopathic effects of Hemisterpa lyrata on the germination and growth of wheat, sorghum, cucumber, rape and radish seeds .Weed. Biol. Manage., 9: 243‒249.
Comparative Effect of Root Pruning and Pythium irregulare on Water Use Effici...Premier Publishers
A pot experiment was conducted in a glasshouse to compare the effects of root pruning and Pythium irregulare on water use efficiency (WUE) of wheat under drought conditions. The results showed that Pythium had no effect on transpiration (3.35 l) and grain yield (7.4 g) when compared with controls. The transpiration of root pruned plants was less than in controls between the time of root pruning and the start of the drought treatment. Root pruned plants had significantly higher transpiration than controls during the drought. Root pruning treatment significantly (P < 0.05) decreased total grain weight, grain number, WUE and harvest index. The extra water available in the root pruned pots at the end of experiment was not enough to bring the grain yield and WUE up to controls. Root pruning possibly did more than just restrict the ability to uptake all water. This experiment showed the importance of the stage at which root damage occurs and how it affects total WUE.
Structural diversity and nutrient recycling potentials of three selected agro...Agriculture Journal IJOEAR
Abstract— Homegardens in Kerala mimic forest ecosystems on account of the tree components included and are agroforestry systems that integrate different agricultural crops and enterprises as per the needs and interests of the farm family. Analysis of the structural diversity and nutrient recycling potentials of three agroforestry homegardens in southern Kerala revealed multi-tier cropping patterns with cropping intensities ranging from 177.18 to 187.04%. Two of the homegardens included livestock components adding to the nutritional security of the family. Diversity indices were in the order 0.92, 1.53 and 0.86. The quantum of litter fall varied with the tree canopies and species, amounting to 473.6, 425.37 and 345.11 kg adding 7.02, 7.517 and 5.165 kg NPK annually in the three homegardens. Maximum nutrient additions were recorded for nitrogen and potassium and least for phosphorus.
Grafting is a method employed to improve crop production. Grafting of vegetable seedlings is a unique horticultural technology practiced for many years in East Asia to overcome issues associated with intensive cultivation using limited arable land.The first grafted vegetable seedlings used were for Watermelon (Citrullus lanatus L.) plants grafted onto Lagenaria siceraria L. rootstock to overcome Fusarium wilt. Since then, the use of grafted solanaceous and cucurbitaceous seedlings has spread, with the practice mainly used in Asia, Europe, and North America. The expansion of grafting is likely due to its ability to provide tolerance to biotic stress, such as soilborne pathogens, and to abiotic stresses, such as cold, salinity, drought, and heavy metal toxicity, due to the resistance found in the rootstock. Many aspects related to rootstock/scion interactions are poorly understood, which can cause loss of fruit quality, reduced production, shorter postharvest time, and, most commonly, incompatibility between rootstock and scion. The rootstock and scion cultivars must be chosen with care to avoid loss.
[HortTechnology] paclobutrazol and flurprimidol control stem elongation of po...JudyLee136
The effects of flurprimidol, paclobutrazol, and ethephon media drenches on stem elongation of star of bethlehem (Ornithogalum thyrsoides and Ornithogalum dubium) were investigated.
HortTechnology Volume 25 Issue 4 (2015)
Soil Population Density, Kernel Infection and Aflatoxin Contamination in Grou...Agriculture Journal IJOEAR
About 100 groundnut pod and soil samples were collected from different locations of North Gujarat and were tested for soil population of A. flavus, percent seed infection and aflatoxin contamination. The average soil population of A. flavus of Kachchh district (4.93 x 103 cfu g-1soil) was slightly higher than Banaskantha district (4.90 x 103 cfu g-1 soil). Minimum soil population of A. flavus was recorded with the variety J-11 grown as rainfed. Moreover, it was maximum when groundnut crops were grown after groundnut whereas; minimum after pulse crops; and a little difference between the irrigated and the rainfed samples were recorded.
The average of seed infection was higher in the Banaskantha district than the Kachchh. Maximum seed infection was recorded in the variety GG-20 grown as irrigated; whereas minimum in the variety J-11 cultivated in rainfed. Maximum seed infection was recorded when groundnut was grown as previous crop, while minimum when pulses were grown as previous crops. Irrigated crops showed higher seed infection as compared to the rainfed crops.
Effect of crop establishment/irrigation techniques and nitrogen levels on gro...Innspub Net
A field experiment was conducted during 2010 and 2011, under three replications. One row in Furrow Irrigated Raised Bed/ every furrow irrigation increased plant height by 7.94 %, stem girth by 46.47 per cent, and dry matter at maturity by 23.69 % over conventional sowing/ conventional irrigation. Similarly, number of leaves increased by 19.26 and 24.65 % leaf area by 25.83 and 26.65 %, over conventional practice at 60 and 90 days after sowing, respectively. Besides, it resulted 1.91 and 1.82 % higher total chlorophyll over conventional practice at 30 and 60 days after sowing, respectively and increased grain by 60.72 %, biological 42.44 % and stover yield by 30.2 % over conventional practice and also resulted 3.43 higher starch and 12.05 % protein content over conventional practice. One row in FIRB/ every furrow irrigation, had 62.1, 51.5 and 42.9 % higher uptake for nitrogen, phosphorus and potassium over conventional practice of crop establishment, respectively. Get more articles: http://goo.gl/FAvGnB
Genetic studies of genotypic responses to water stress in upland cotton (Goss...INNS PUBNET
The present study was carried out to examine the potential in cotton germplasm for breeding water stress tolerant plant material, and understand the genetic basis of different morphological traits related to water stress tolerance. Portioned analysis of variance was employed to obtain good parents for this purposes. The parental genotypes MNH-512, Arizona-6218, CIM-482, MS-39, and NIAB-78 were crossed in complete diallel fashion and F0 seeds of 20 hybrids and five parents were planted in the field in randomized complete block design with three replications during 2010. Simple regression analysis of F1 data revealed that additive-dominance model was quite adequate for all morphological traits. The unit slope of regression lines number of bolls (b = 1.07 ± 9.14), boll weight (b = 0.99 ± 0.11), yield per plant (b = 0.96 ± 0.31), plant height (b = 1.10 ± 0.34), leaf area index (b = 0.82 ± 0.27), and ginning percentage (b = 1.01 ± 0.12) suggested that the epistatic component was absent in the inheritance of all characters studied. The result of various plant characters including seed yield showed drastic effects of water stress as compared with those assessed in non-stressed condition. Leaf area index in the analysis of variance suggested that additive variation was more important for the character. Narrow leaf varieties NIAB-78 and CIM-482 were water stress tolerant while varieties Arizona-6218, MNH-512 and MS-39 were broader leaf showing less resistant to water stress. The information derived from these studies may be used to develop drought tolerant cotton material that could give economic yield in water stressed conditions of cotton belt. Full articles at: http://innspubnet.blogspot.com/2016/08/diversity-and-distribution-of-anuran-in.html
Effect of Varying Rate of Leaf Defoliation on Maize Growth, Development and ...Scientific Review SR
Pot trial was conducted at the Faculty of Agriculture, Kogi State University Anyigba, within the
southern Guinea savanna agro ecological zone of Nigeria, with daily temperature range between 250C - 350C.
The experiment, a Randomized Complete Block Design (RCBD) with eight treatments (defoliation at 25%
above the ear, 25% under the ear, 50% above the ear, 50% under the ear, 75% above the ear, 75% under the
ear, 100% defoliation and no defoliation as control) was replicated four times. Treatment was imposed at ear
initiation. Growth and yield parameters collected were: number of leaves per plant, leaf area, plant height, stem
girth, days to ear initiation, number of cobs/plant, days to crop maturity, cob weight, cob length, seed rows per
cob, 100-seed weight as well as total cob yield/ha. All data collected were subjected to analysis of variance
(ANOVA) and New Duncan Multiple Range Test (NDMRT) was used to estimate the differences among
significant means at 5% level of probability. Prior to imposition of the treatment, anal yzed results indicate no
significant differences between number of leaves at 2, 4 and 6 WAS, as well as plant heights and stem girth at
2, 4, 6, 8 and 10 WAS. However there were significant differences between leaf areas at 4 and 6 WAS. In
addition, there were significant effects of defoliation on cob length and dry cob weight with the highest cob
weight obtained in 25% defoliation carried out above the ear. In addition, there were significant differences in
the number of rows per cob and grain yield per ha with 0% defoliation giving the highest result while the least
was in 100% defoliation. Generally, it was observed that defoliation at any rate and position influenced maize
yield, notwithstanding that the treatment was imposed at cob initiation, an indication that harvest of solar
radiation post cob initiation plays important role on eventual maize yield
Xingxinag, G., M. Li, G. Zongjung, L. Changsong and S. Zuowen, 2009. Allelopathic effects of Hemisterpa lyrata on the germination and growth of wheat, sorghum, cucumber, rape and radish seeds .Weed. Biol. Manage., 9: 243‒249.
Comparative Effect of Root Pruning and Pythium irregulare on Water Use Effici...Premier Publishers
A pot experiment was conducted in a glasshouse to compare the effects of root pruning and Pythium irregulare on water use efficiency (WUE) of wheat under drought conditions. The results showed that Pythium had no effect on transpiration (3.35 l) and grain yield (7.4 g) when compared with controls. The transpiration of root pruned plants was less than in controls between the time of root pruning and the start of the drought treatment. Root pruned plants had significantly higher transpiration than controls during the drought. Root pruning treatment significantly (P < 0.05) decreased total grain weight, grain number, WUE and harvest index. The extra water available in the root pruned pots at the end of experiment was not enough to bring the grain yield and WUE up to controls. Root pruning possibly did more than just restrict the ability to uptake all water. This experiment showed the importance of the stage at which root damage occurs and how it affects total WUE.
Structural diversity and nutrient recycling potentials of three selected agro...Agriculture Journal IJOEAR
Abstract— Homegardens in Kerala mimic forest ecosystems on account of the tree components included and are agroforestry systems that integrate different agricultural crops and enterprises as per the needs and interests of the farm family. Analysis of the structural diversity and nutrient recycling potentials of three agroforestry homegardens in southern Kerala revealed multi-tier cropping patterns with cropping intensities ranging from 177.18 to 187.04%. Two of the homegardens included livestock components adding to the nutritional security of the family. Diversity indices were in the order 0.92, 1.53 and 0.86. The quantum of litter fall varied with the tree canopies and species, amounting to 473.6, 425.37 and 345.11 kg adding 7.02, 7.517 and 5.165 kg NPK annually in the three homegardens. Maximum nutrient additions were recorded for nitrogen and potassium and least for phosphorus.
Grafting is a method employed to improve crop production. Grafting of vegetable seedlings is a unique horticultural technology practiced for many years in East Asia to overcome issues associated with intensive cultivation using limited arable land.The first grafted vegetable seedlings used were for Watermelon (Citrullus lanatus L.) plants grafted onto Lagenaria siceraria L. rootstock to overcome Fusarium wilt. Since then, the use of grafted solanaceous and cucurbitaceous seedlings has spread, with the practice mainly used in Asia, Europe, and North America. The expansion of grafting is likely due to its ability to provide tolerance to biotic stress, such as soilborne pathogens, and to abiotic stresses, such as cold, salinity, drought, and heavy metal toxicity, due to the resistance found in the rootstock. Many aspects related to rootstock/scion interactions are poorly understood, which can cause loss of fruit quality, reduced production, shorter postharvest time, and, most commonly, incompatibility between rootstock and scion. The rootstock and scion cultivars must be chosen with care to avoid loss.
[HortTechnology] paclobutrazol and flurprimidol control stem elongation of po...JudyLee136
The effects of flurprimidol, paclobutrazol, and ethephon media drenches on stem elongation of star of bethlehem (Ornithogalum thyrsoides and Ornithogalum dubium) were investigated.
HortTechnology Volume 25 Issue 4 (2015)
Soil Population Density, Kernel Infection and Aflatoxin Contamination in Grou...Agriculture Journal IJOEAR
About 100 groundnut pod and soil samples were collected from different locations of North Gujarat and were tested for soil population of A. flavus, percent seed infection and aflatoxin contamination. The average soil population of A. flavus of Kachchh district (4.93 x 103 cfu g-1soil) was slightly higher than Banaskantha district (4.90 x 103 cfu g-1 soil). Minimum soil population of A. flavus was recorded with the variety J-11 grown as rainfed. Moreover, it was maximum when groundnut crops were grown after groundnut whereas; minimum after pulse crops; and a little difference between the irrigated and the rainfed samples were recorded.
The average of seed infection was higher in the Banaskantha district than the Kachchh. Maximum seed infection was recorded in the variety GG-20 grown as irrigated; whereas minimum in the variety J-11 cultivated in rainfed. Maximum seed infection was recorded when groundnut was grown as previous crop, while minimum when pulses were grown as previous crops. Irrigated crops showed higher seed infection as compared to the rainfed crops.
Crescer criança infantil juveniil adolescente avanços científicos promovem re...Van Der Häägen Brazil
Estes processos geram novos tecidos cartilaginosos, que subsequentemente, remodelam o tecido ósseo. O resultado líquido é que o osso novo é progressivamente criado na placa de crescimento, o que faz com que os ossos cresçam mais em criança, infantil, juvenil e adolescente e desenvolvam uma estatura mais alta.
Utilisation ciblée de Linkedin dans la Recherche d'Emploi et la Gestion de carrière.
Comment optimiser son profil pour qu'il soit visible et ressorte dans les recherche des recruteurs de façon ciblée et pertinente par rapport à son projet de carrière.
Comment faire matcher naturellement sa recherche avec l'offre emploi.
Acquérir la maîtrise de LinkedIn en tant qu'outil de recherche et de promotion professionnelle.
Une fois en poste LinkedIn devient un outil de productivité à part entière qui peut donner un avantage compétitif à l'entreprise qui accueille le collaborateur devenu expert...
Discussion of the key concepts which need to be considered when accrediting digital education, based on the research done by the Maltese Government while designing its system.
Presented at the Maltese EU Presidency Conference on "The State of Digital Education" in Attard, Malta on 19th January 2017.
Morphological and physiological attributes associated to drought tolerance of...Innspub Net
The experiment was conducted to assess the differential morpho-physiological response to stimulated water deficit and to determine the relationship between some of these morphological and physiological traits and yield components of eighteen durum wheat genotypes grown in pots under lathhouse condition. Water deficit significantly affected gas exchange and chlorophyll fluorescence parameters. It reduced the net photosynthesis rate (Pn), transpiration rate (E) and stomatal conductance (gs) measured both at anthesis and grain-filling stages. Similarly, the value of initial fluorescence (Fo) was increased while variable fluorescence (Fv), maximum fluorescence (Fm) and optimum quantum yield fluorescence (Fv/Fm) were decreased under water deficit. RWC of the leaves was decreased by 36.7% while SLA increased by 12.6% due to moisture stress relative to the well-watered control. No significant correlations were found between chlorophyll fluorescence parameters and grain yield under water deficit condition. Similarly, no significant correlations were found between leaf gas exchange parameters and grain yield. On the other hand, peduncle length and excursion were positively correlated with grain yield while negatively correlated with drought susceptibility index under water deficit condition. Leaf posture and rolling had also a profound effect on grain yield and other attributes. Erect-leaved genotypes had more grain yield, HI, kernel numbers per spikelet and grain-filling rate but had lower kernel weight than droopy leaved. Similarly, genotypes exhibited strong leaf rolling under water deficit condition had more grain yield, kernel numbers per spike and water use efficiency. The genetic variability found for leaf posture, leaf rolling, peduncle length and excursion among the Ethiopian durum wheat genotypes suggests the opportunity for selection superior and adapted genotype in water-limited environments. These can be achieved by integrating these morphological traits as indirect selection in conjunction with other yield components. Get the full articles at: http://www.innspub.net/volume-1-number-2-april-2011-2/
Influence of water stress and rhizobial inoculation on growth and yield of se...Innspub Net
Two season’s field experiment and single season screen house experiment were conducted to assess the effect of water stress periods and rhizobial inoculation in five P. vulgaris cultivars. The experiment consisted of two levels of rhizobia (with and without inoculation), two stress levels (with and without water stress) and five cultivars of P. vulgaris (KAT B9, KAT B1, F9 Kidney Selection, F8 Drought line and JESCA). Results showed that rhizobial inoculation significantly increased plant height (cm), leaf area (cm2), shoot and root dry weight (g-1 plant) and seed yields (kg-1 ha) at vegetative and flowering in field experiment. Furthermore, water stress treatments significantly reduced plant height (cm), stem diameter (mm), shoot and root dry weight (g-1 plant) and seed yields (kg-1 ha) in both growth stages at field experiment. For screen house experiment rhizobial inoculation significantly increased leaf area (cm2), number of leaves, stem girth (mm), shoot and root dry weight (g-1 plant) at both growth stages. Additionally, water stress treatments significantly reduced number of leaves, stem diameter (mm), shoot and root dry weight (g-1 plant) in both growth stages. Varieties F9 Kidney Selection, F8 Drought Line and JESCA had significantly superior measurements reflected in increased plant height (cm), shoot and root dry weight (g-1 plant) and seed yields (kg-1 ha) as compared with KAT B9 and KAT B1. Furthermore, significant interactive effects were also seen between rhizobial inoculation x stress level and tested bean cultivars on plant height, number of leaves, stem diameter, shoot dry weight and seed yields.
The experiment was conducted at the experimental farm and laboratory of Institute of
Sustainable Agrotechnology, University Malaysia Perlis, Padang Besar, Perlis, Malaysia, with the objective
toinvestigate the inhibitory and stimulatory effects of aqueous extract of mungbean on seed germination and
seedling growth of three crop species, mungbean, sweet corn and okra. Different treatments of mungbean
aqueousextracts (vegetative fresh, vegetative after 2 weeks drying, vegetative after 4 weeks drying, flowering
fresh, flowering after 2 weeks drying, flowering after 4 weeks drying, flowering fresh, flowering after 2 weeks
drying, flowering after 4 weeks drying, maturity fresh, maturity after 2 weeks drying, maturity after 4 weeks
drying and water as control) were used to test their effect on the test species. The experiment was randomly
distributed and according to Completely Randomized Design(CRD) with five replicates. The results showed the
fresh vegetative aqueous extract of mungbean had a significant effect (stimulatory) on germination percent and
growth parameters such as number of root, root length and shoot height, of the three crop species. The study
revealed that the aqueous extract of mungbean have different effects (inhibitory and stimulatory) on the
seedlings and the mode of action depends on the associated plant species.Our results suggest that the aqueous
extract of mungbean from the different growth stages and drying periods have an allelopathic effect.
ABSTRACT- Germination one of the most important stages of development, the basic requirement for having the proper
density is farm. In order to choose wheat lines tolerant to drought during seed germination factorial experiment in a
randomized complete block design with three replications were run Agricultural Research Center in Tehran. The
treatments included 40 genotypes of wheat and different levels of PEG (zero, 3-, 6- and 9-charge time). Traits such as root
length, coleoptile length, stem length, the root / shoot ratio, root dry weight and the percentage of germination rate were
measured. The results showed that all traits of drought stress significantly reduced the decline in all the traits of a potential
change of 3 bar to 6 bar, and the results showed that the root length of shoot length other traits for drought levels was
significant, but the interaction was not significant cultivar × drought. With increasing stress, most traits are reduced, the
minimum impact of drought on root to shoot ratio and root dry weight was the most affected.
Key-words- Polyethylene glycol, Osmotic stress, Germination, Wheat, Genotype
Systems Approaches for Perennial Crops: Case Studies from Perennial Wheat in ...FAO
http://www.fao.org/agriculture/crops/thematic-sitemap/theme/spi/en/
Presentation by Len Wade (Charles Sturt University) describing the role and benefit of perennial crops in farming systems using examples from Australia and Asia. The presentation was delivered in occasion of the “Putting Perennial crops to work in practice” workshop in Bamako, Mali (1-5 September 2015).
Effect of Stress on Selected Edible PlantsYogeshIJTSRD
Two edible plants Lablab purpureus of the Fabaceae and Cucumis sativus of the Cucurbitaceae have been studied by stress analysis. Salt stress is caused by excessive accumulation of salt in the soil, either directly because of salinization, or indirectly because of water loss. As a consequence, the soil water potential progressively decreases and eventually stopping the gradient of water flow from roots region to upper most part shoot and leaf . In this paper, both edible plant seeds are allowed to different stress conditions salt, dark and sugar . The different concentration of salt such as 10ppm, 25ppm, 50ppm, dark condition and 10ppm of sugar solution are used. Both plant seeds measurement was taken at the interval of 10 days. Generally first germination was seen within 3 days in a pot after sowing of seeds. In both plant, control pots showed normal growth of seeds. Treatments are shown the variation. Stress analysis is further confirmed by proline analysis. This paper revealed that stress analysis of entirely two different family members such as Lablab purpureus and Cucumis sativus M. Dhanasekaran | G. S. Nandhakumar | R. Thayalan "Effect of Stress on Selected Edible Plants" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-4 , June 2021, URL: https://www.ijtsrd.compapers/ijtsrd41314.pdf Paper URL: https://www.ijtsrd.combiological-science/botany/41314/effect-of-stress-on-selected-edible-plants/m-dhanasekaran
Effect of Integrated Nutrient Management on Growth and Yield of Barley Hordeu...ijtsrd
Arundo donax was screened for their allelopathic potential to the growth of barley seedlings. The 3 aqueous leachate was tested for seed germination of barley in laboratory bioassay. The Arundo donax was found to enhance the growth of barley seedlings. The aqueous leachate of Bg parts was more pronounced growth of barley seedlings than Ag parts. This study suggested the future prospects of the integrated management of barley crop using the allelopathic potential of A. donax. Dr. Rajendra Kumar "Effect of Integrated Nutrient Management on Growth and Yield of Barley (Hordeum Vulgare) by using Arundo Donax in Integrated Management of Barley Crop" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-6 | Issue-4 , June 2022, URL: https://www.ijtsrd.com/papers/ijtsrd50193.pdf Paper URL: https://www.ijtsrd.com/biological-science/botany/50193/effect-of-integrated-nutrient-management-on-growth-and-yield-of-barley-hordeum-vulgare-by-using-arundo-donax-in-integrated-management-of-barley-crop/dr-rajendra-kumar
3. Drought-induced Changes in Root and Shoot Growth of Pigeonpea
Vol. 33, No. 4, October-December 2015 2817
turgidity. The translocation of assimilates towards
the roots due to decreases in shoot growth. Similar
results of reduced shoot length were also recorded
by Kibreab et al. (2013).
In both rainfed and irrigated conditions the
genotype SKNP 1004 showed superiority for the
value of root dry weights. Plant productivity under
drought stress is strongly related to the processes
of dry matter partitioning and biomass distribution.
Elongation of the taproots in the rainfed plants
occurred at the expense of thickening. These results
were also supported by Kataria and Singh (2014).
The genotype SKNP 1005 recorded maximum
shoot dry weight in rainfed and irrigated over the
rest of other genotypes. The results showed that
water stress reduced shoot dry weight even partial
dried root systems can lead to decreased allocation
of photosynthates to vegetative shoots. Longer roots
may reduce shoot dry weight by allowing the
partitioning of photosynthate towards roots at the
expense of shoots. Water stress lowers the cell turgor
and causes slower cell expansion, consequently
growth and development of a plant decreased that
leads to a lower shoot dry weights. The results of
the present study is similar to the findings of Amira
and Qados (2014).
Figure 3: Effect of rainfed and irrigated conditions on root
dry weight at 60 days after sowing
Figure 4: Effect of rainfed and irrigated conditions on shoot
dry weight at 60 days after sowing
Figure 5: Effect on root/shoot ratio of rainfed and irrigated
conditions at 60 days after sowing.
Figure 6: Effect of rainfed and irrigated conditions on seed
yield per plant
The rainfed data showed that utmost root/shoot
ratio was observed by the genotype UPAS 120, while
in irrigated condition the genotype SKNP 1003 had
most prominent root shoot ratio across the left over
genotypes. Plants in dry conditions often decrease
biomass production and contribute more biomass to
roots, maintaining a higher root shoot ratio as an
adaptation trait to drought resistance. High root/
shoot ratio was found to increase water uptake and
have a positive effect on yield under stress. Similar
results of increased root shoot ratio were recorded
by Uddin et al. (2013).
SKNP 1004 is characterized by highest seed yield
under rainfed as well as irrigated conditions.
Drought inhibited growth by reducing rate of cell
division and cell expansion, leaf size, stem elongation
as well as root proliferation, by disturbing stomatal
oscillations, metabolic activities, plant water and
nutrient relations, loss of pollen and stigma viability
which affects yield components and all together
decreases seed yield. Moisture stress reduced yield
due to poor partitioning operated along with terminal
drought stress. The present study was supported
by Ahmed and suliman (2010).
![Drought-induced Changes in Root and Shoot Growth of Pigeonpea
Vol. 33, No. 4, October-December 2015 2815
*
C.P. College of Agriculture, Sardar Krushinagar Dantiwada Agricultural University, Sardarkrushinagar, Gujarat - 385506,
India.
I J T A© Serials Publications
National Academy of Agricultural Science (NAAS) Rating : 3. 03
Drought-induced ChangesinRootandShootGrowthofPigeonpea[Cajanuscajan
(L.) Millspaugh]
K. Suresh*
, H.S. Bhadauria, Y. Ravindra babu and K. Satish, Satyendra Singh
Abstract: Twenty pigeonpea genotypes were sowed separately under rainfed and irrigated condition for evaluating root
traits associated to drought tolerance in kharif 2013. The genotype SKNP 1004 was marked by maximum root length, root
dry weight and seed yield in both rainfed and irrigated conditions and it showed highest shoot length in rainfed condition.
The genotype SKNP 1005 recorded utmost values for shoot length and shoot dry weight in both conditions. The root/shoot
ratio were superior for UPAS 120 in rainfed condition while it was highest for SKNP 1003 in irrigated condition. Therefore,
SKNP 1004 and SKNP 1005 were rated as most promising genotype for drought tolerance.
Keywords: Pigeonpea, Root length, Shoot length, Root/Shoot ratio.
INTRODUCTION
Pigeonpea [Cajanus cajan (L.) Millspaugh] is also
popularly known as Redgram, Tur and Arhar. It is
one of the major grain legume crops of the tropics
and subtropics grown approximately 50 countries
which spread in continents of Asia, Africa and
America. Drought stress, characterized by low
availability of soil moisture and high evapo-
transpiration is considered one of the principal causes
which decrease crop productivity worldwide Boyer
(1982). Pigeonpea is normally cultivated as a rainy
crop and is often subjected to water stress at one or
several stages of crop growth and development,
since it is a long duration crop, drought stress is
considered as a severe threat for sustainable crop
production in the conditions of climate change.
Accordingly, the present study was planned to find
out a simple and precise field method to detect
genotypic differences in drought tolerance and to
quantify loss in yield.
MATERIAL AND METHODS
Twenty genotypes were evaluated in rainfed and
irrigated conditions with three replications and
maintaining 60 cm (Row to Row) 20 cm (Plant to
Plant) spacing. The crop in rainfed condition was
sowed just after monsoon. Three irrigations applied
in irrigated set after ceasation of monsoon. The crop
was raised in protective root structure which is 6 ft.
high from the ground level and it was filled with
uniform soil. The roots were extracted carefully by
removing soil with the help of water. The root and
shoot length were measured for five randomly
tagged plants at 60 days after sowing and calculated
by the mean of five plants. After harvesting, the fresh
roots and shoots were sun dried then oven dried
for 48 hrs at 60°C, root and shoot dry weight recorded
with help of balance and expressed as g/plant. The
root dry weight was divided with shoot dry weight
for five randomly tagged plants at 60 days after
sowing and root shoot ratio calculated by the mean
of five plants. The recommended package of
practices were adopted during crop period.
RESULTS AND DISCUSSION
Identification of a drought tolerant variety of
pigeonpea is a difficult task for several reasons
because so many attributes are related to drought
tolerance. It is highly impossible to have a genotype
possessing all these attributes responsible for
drought tolerance. For the selection of such
genotypes, the study on root traits related to plant](https://image.slidesharecdn.com/d6baaf03-e660-4904-87ee-f7ee312bfb63-161005134825/85/K-SURESH-1-320.jpg)
