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16 christian fatokun_objective3cowpea 16 christian fatokun_objective3cowpea Presentation Transcript

  • Enhancing cowpea productivity and production in drought-prone areas in sub- Saharan Africa Abaidoo, R., Adamou, M., Amane, V., Bandyopadhyay, R., Boahen, S., Boukar, O., Coulibaly, O., Fatokun, C., Ishiyaku, M., Kumar, L., Mligo, J., Muranaka, S., Sonder, K., and Toure, M.
  • Test existing lines…..for adaptation to drought
  • Country Breeding line Main attribute Mali CZ1-94-23-1; IT93K-876-30 Drought tolerant Mozambique IT00K-1263; IT97K-1069-6 Drought tolerant Niger IT97K-499-38; IT98K-628 Drought tolerant Nigeria IT93K-452-1; (IT97K-499-35) Drought tolerant Tanzania IT99K-529-1; IT00K-1263 Drought tolerant IITA, Nigeria IT00K-901-5; IT98K-506-1; Drought IT00K-898-5 tolerant
  • IT89KD-288 IT99K-529-2 IT98K-166-4 IT97K-819-118 IT97K-1069-6 IT97K-390-2 IT98K-128-3 RAUCE IT00K-1263 IT98K-311-8-2 IITA IBADAN 1 IITA IBADAN 2 MAGARIA 1 IT98K-628 MAGARIA 2 MARADI 1 NAMPULA KANO 1 CHINZANA 2 CHINZANA 1 MARADI 2 KANO 2 IT99K-7-21-2-2 IT96D-610 IT98K-412-13 IT99K-216-24-2 IT99K-1122 IITA KANO 2 IITA KANO 1 IT98K-491-4
  • MARADI2 MAGARIA1 MAGARIA2
  • Six elite cowpea lines introduced from IITA showed complete immunity to Striga gesnerioides in Magaria-Niger where the infestation was the highest. These resistant lines are: IT98K-1092-1, IT99K-573-1-1, IT98K-628, IT99K-1122, IT97K-205-8, and IT97K-499-38.
  • In Nigeria seven IITA developed elite breeding lines also showed no Striga emergence during the two dates of planting: IT99K-573-1-1, I T 9 9 K - 11 2 2 , I T 9 9 K - 4 9 4 - 6 , I T 0 4 - 2 2 7 - 4 , IT00K-1207, IT97K-819-118 and IT99K-529-2. Two of these (IT99K-573-1-1 and IT99K-1122) were also immune to Striga in Magaria-Niger.
  • Some farmers attracted to one of the test lines that showed promise of producing grain in the drought prone area of Hombolo. This cowpea line was at podding stage during the second planting when there was terminal drought.
  • Selected line by farmers and named ‘Hope’ in Mali
  • In country seed multiplication of selected breeding lines
  • Quantities of seeds produced per selected line - Mali Cowpea line Seed quantity (kg) IT93K-876-30 118 Mbrawa (Cinzana) 40 Kougnekou (Koporo) 50 Total 208
  • Quantities of seeds produced per selected line -Mozambique Cowpea line Seed quantity (kg) IT18 2,280 IT00K-1263 605 IT97K-1069-6 520
  • Quantities of seeds produced per selected line -Nigeria Cowpea line Seed quantity (kg) IT00K-1263 33 IT99K-216-24-2 25 IT99K-7-21-2-2 37 IT97K-819-118 14 IT98K-311-8-2 19 IT96D-610 31 IAR-1050 17 IT97K-499-35 39 Total 215
  • Quantities of seeds produced per selected line - Tanzania Cowpea line Seed quantity (kg) IT00K-1263 54 IT99K-529-1 56 IT99K-1122 28 At least 25 kg each of 50 ‘Fahari’ and ‘Tumaini’ Total = 188 produced
  • Reaction to bacterial blight Cowpea line Disease severity Classification TVU 7778 1.79 Susceptible IT97K-499-35 1.28 MR IT98K-506-1 1.03 " DANILA 1.00 HR IT99K-1060 1.00 " IT00K-1263 1.00 " IT99K-1122 1.00 " IT99K-1111-1 1.00 "
  • IT98K-133-1-1 response to P
  • IT98K-1092 response to P
  • P-use efficiency: Probability of F values Dual purpose NN NW RDW SHDW NC PC Genotype *** * ns ns ns *** Treat *** *** ns *** *** *** Genotype*Treat** ns ns ns ns *** Early maturing Genotype *** ** * ** ** * Treat *** *** ns *** *** *** Genotype*Treat *** ** ns ns ns ns ***,**,*; significant at 0.001, 0.01, and 0.05 respectively; ns - not significant NN: Nodule number; NW; nodule weight; RDW: root dry weight; SHDW: shoot dry weight; NC: nitrogen concentration in shoot; PC: Phosphorus concentration in shoot
  • Selected lines planted in demonstration plots
  • A demonstration plot in Mopti region - Mali
  • A lady farmer in Iringa Province, Tanzania
  • Cowpea lines in demonstration plots Mali IT93K-876-30; Kougnekou; Mbrawa Niger IT96D-610; IT97K-499-35; IT97K-499-38; IT99K-573-1-1; Et DD 07 Nigeria IT86D-610; IAR-06-1050; (IT97K-499-35); IAR-00-1074 (Borno) (IT97K-499-35); IT99K-7-21-2-2; IT99K-216-24-2 (Kano) Mozambique IT18; IT00K-1263; IT99K-1089-6 Tanzania IT00K-1263; IT99K-1122; Vuli-1; Vuli-2; Fahari; Tumaini
  • Groups of farmers assessing cowpea lines
  • Create populations segregating for drought tolerance and attendant traits
  • Grain yield (g/plant) and % yield reduction due to stress Genotype Grain yld Grain yld % yld Stressed Non stressed reduction IT98K-506-1 11.7 28.6 59 TVu522 11.8 12.6 6 TVu14676 6.7 11.9 44 TVu557 11.0 23.1 52 TVu813 6.9 52.4 87
  • Crosses made between drought tolerant lines and some breeding lines selected through FPVS Selected lines had: : lower seed yield reduction due to drought : high seedling recovery
  • Examples of single crosses TVU 4574 x TVU 522 TVU 4574 x TVU 6443 TVU 4574 x IT99K-494-6 TVU 4574 x DANILLA TVU 6443 x IT 99K-494-6 TVU 6443 x TVU 1438 TVU 557 x TVU 1438 TVU 557 x TVU 522 IT 99K-494-6 x DANILLA TVU 14676 x TVU 4574 TVU 14676 x TVU 2736 TVU 14676 x TVU 522 DANILLA x TVU 2731
  • Examples of three way crosses IT97K-499-35 x TVu1438 x TVu557 IT97K-499-35 x TVu14676 x TVu4574 IT97K-499-35 x TVu522 x TVu557 IT97K-499-35 x TVu522 x DANILLA IT97K-499-35 x TVu1438 x TVu557 IT97K-499-35 x TVu4574 x TVu522 IT97K-499-35 x TVu4574 x IT99K-494-6 IT97K-499-35 x IT99K- 494-6 x TVu522 IT97K-499-35 x TVu4574 x TVu6443 IT97K-499-35 x TVu14676 x TVu4574 IT97K-499-35 x TVu577 x TVu1438 IT97K-499-35 x TVu522 x TVu4574
  • Crosses made •  38 single crosses, F4 generation in the field •  88 three way crosses, F3 generation in the field •  Seeds for F5 and F4 generations available January 2010 for planting in Kano under irrigation
  • Training The following students are about completing their MSc degree programs in plant breeding: Mozambique: Henriques Colial and John Kaunda Tanzania: Didasi Tarimo and Kimaro Nigeria: Habibu Aliyu and Auwalu Adamu Umar Mali and Niger: Nominated students (Sory Diallo and Mamadou Diallo, Mali and Mohammed Bouzou and Moussa Bachari, Niger) could not get admitted for graduate studies
  • Challenges
  • Screening for resistance to aphid at seedling stage
  • Different races of Striga
  • Alectra vogelii parasitizing a cowpea plant
  • Lessons learnt  • Training at MSc level • The involvement of farmers, farmers’ groups and other stakeholders such as extension agents and NGOs help in getting developed technologies to where they would make necessary impacts. NGO’s, entrepreneurs and local Government officials were found helpful in pushing technologies to rural areas where most cowpea farmers are located. • Demonstration plots were found useful in getting farmers to accept improved lines more readily • Need to survey the diseases of cowpea in ESA.
  • Thanks