Registration of Six Improved Germplasm Lines of Cowpea with Combined Resistance to Striga gesnerioides and Alectra vogelii

The International Institute of Tropical Agriculture (IITA) has developed and distributed 6 improved cowpea germplasm lines IT90K-59 Reg. no. Of these, two lines were developed by the partial backcross method using a local landrace, B 301 from Botswana, as the source of resistance to Striga and Alect...

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Bibliographic Details
Published in:Crop science 2006-09, Vol.46 (5), p.2332-2333
Main Authors: Singh, B.B, Olufajo, O.O, Ishiyaku, M.F, Adeleke, R.A, Ajeigbe, H.A, Mohammed, S.G
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Alectra vogelii
Biological and medical sciences
biological resistance
cowpeas
crop yield
dominant genes
Fundamental and applied biological sciences. Psychology
genetic resistance
Genetics
Genetics and breeding of economic plants
Genotype & phenotype
germplasm
germplasm releases
landraces
parasitic plants
plant genetic resources
Property rights
Striga gesnerioides
Varietal selection. Specialized plant breeding, plant breeding aims
Vigna unguiculata
weeds
wide hybridization
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Summary:The International Institute of Tropical Agriculture (IITA) has developed and distributed 6 improved cowpea germplasm lines IT90K-59 Reg. no. Of these, two lines were developed by the partial backcross method using a local landrace, B 301 from Botswana, as the source of resistance to Striga and Alectra and the other lines were subsequently developed through regular hybridization and selection using the derived lines as resistant sources (Singh, 2002). In addition to its resistance for Striga and Alectra, it is also resistant to major diseases including anthracnose [caused by Colletotrichum lindemuthianum (Sacc. & Magnus) Lams.], web blight [caused by Corticium solani (Prill. & Delacr.) Bourdot & Galz.], brown blotch [caused by Colletotrichum capsici (Syd.) Butler & Bisby], and scab (Elsinoe phaseoli Jenk.), Cowpea yellow mosaic virus and Cowpea aphid-borne mosaic virus, nematode [Meloidogyne incognita (Kofoid & White) Chitwood], cowpea storage weevil [Callosobruchus maculatus (Fabricius)], cowpea flower thrips [Megalurothrips sjostedti (Trybom)], and cowpea aphid [Aphis craccivora (Koch)].
ISSN:0011-183X
1435-0653
DOI:10.2135/cropsci2006.03.0148