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Field evaluation of improved cowpea lines for resistance to bacterial blight, virus and striga under natural infestation in the West African savannas

dc.contributor.authorAjeigbe, Hakeem A.
dc.contributor.authorSingh, B.B.
dc.contributor.authorEmechebe, A.M.
dc.date.accessioned2019-12-04T11:14:43Z
dc.date.available2019-12-04T11:14:43Z
dc.date.issued2008-10
dc.identifier.citationAjeigbe, H.A., Singh, B.B. & Emechebe, A.M. (2008). Field evaluation of improved cowpea lines for resistance to bacterial blight, virus and striga under natural infestation in the West African Savannas. African Journal of Biotechnology, 7(20), 3563-3568.
dc.identifier.issn1684-5315
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2840
dc.description.abstractThe average productivity of cowpea in the existing traditional systems is low due to a complex of biotic and abiotic stresses. The biotic factors include insect pests, parasitic plants, and viral, fungal and bacterial diseases. Concerted efforts are being made to develop improved cowpea varieties with combined resistance to these constraints. Twenty five cowpea lines including two local land-races were grown at three locations in the first year (2002) and at six locations in the second year (2003) in Nigeria and Niger for field screening for resistance to Bacterial blight. Many of the improved varieties had significantly higher grain and fodder yields than the local checks. There was genotype x environment interactions for grain and fodder yields. About 44% of the varieties tested were resistant to bacterial blight while 20% showed moderate resistance and others were susceptible. Bacterial blight was more important in the Sahel, and several improved cowpea breeding lines, IT98K-506-1, IT97K-1113-7, IT97K- 1069-6, IT97K-1092-2, IT97K-1069-5, IT98K-131-2 and IT97K-568-18 produced higher grain and fodder yields than the other varieties and showed combined resistance to the disease. These varieties should therefore be evaluated on-farm for onward release to farmers where there seed types meet the farmers preferred seed type other wise they can be used as parent lines as source of important genes for resistant to the diseases and high grain and fodder yields.
dc.language.isoen
dc.subjectBacterial Blight
dc.subjectCowpeas
dc.subjectVirus
dc.subjectStriga
dc.subjectYield
dc.subjectWest Africa Savanna
dc.subjectBiotic And Abiotic Factors
dc.subjectPathogen
dc.titleField evaluation of improved cowpea lines for resistance to bacterial blight, virus and striga under natural infestation in the West African savannas
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of Agriculture and Technology, Pantnagar
cg.coverage.regionAfrica
cg.coverage.regionAcp
cg.coverage.regionWest Africa
cg.coverage.regionEast Asia
cg.coverage.countryNigeria
cg.coverage.countryIndia
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectPlant Breeding
cg.iitasubjectCowpea
cg.iitasubjectPlant Production
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectFarming Systems
cg.iitasubjectFood Security
cg.iitasubjectFarm Management
cg.iitasubjectPlant Diseases
cg.iitasubjectGenetic Improvement
cg.iitasubjectDisease Control
cg.iitasubjectPests Of Plants
cg.iitasubjectCrop Husbandry
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.accessibilitystatusOpen Access
local.dspaceid93941


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