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Yield performance stability of adapted and improved cowpea in the Equatoria region of South Sudan

dc.contributor.authorNgalamu, T.
dc.contributor.authorMeseka, S.
dc.contributor.authorGalla, J.O.
dc.contributor.authorTongun, N.J.
dc.contributor.authorOchanda, N.W.
dc.contributor.authorOfori, K.
dc.date.accessioned2019-12-04T11:36:06Z
dc.date.available2019-12-04T11:36:06Z
dc.date.issued2019
dc.identifier.citationNgalamu, T., Meseka, S., Galla, J.O., Tongun, N.J., Ochanda, N.W. & Ofori, K. (2019). Yield performance stability of adapted and improved cowpea in the Equatoria region of South Sudan. Legume Research, 1-6.
dc.identifier.issn0250-5371
dc.identifier.urihttps://hdl.handle.net/20.500.12478/6099
dc.descriptionPublished online: 15 June 2019
dc.description.abstractCowpea is an important food crop with high nutritional and socio-economical values in South Sudan. However, the lack of improved varieties is one of the main production constraints. This study was undertaken to assess the yield stability performance of improved cowpea genotypes across six environments in South Sudan in 2014 and 2015. Nine genotypes were evaluated in a randomized complete block design with three replications. Genotype and genotype x environment biplot analysis method was used to determine yield stability. Highly significant (p< 0.001) genotype x environment interaction effect was detected for seed yield. IT90K-277-2 had the highest while ACC004 had the lowest grain yield. Palotaka was as highly discriminating and repeatable environment compare to the other testing sites. IT07K-211-1-8 and Mading Bor II were the most responsive genotypes, while IT90K-277-2 was the most stable high yielding genotype across the test environments and can be grown by farmers across the region.
dc.description.sponsorshipAlliance for a Green Revolution in Africa
dc.format.extent1-6
dc.language.isoen
dc.rightsCopyrighted; all rights reserved
dc.subjectAdaptability
dc.subjectCowpeas
dc.subjectGrain
dc.subjectYields
dc.subjectStability
dc.subjectGrain Legumes
dc.titleYield performance stability of adapted and improved cowpea in the Equatoria region of South Sudan
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpMaize
cg.contributor.affiliationUniversity of Ghana
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationAlliance for a Green Revolution in Africa
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countrySouth Sudan
cg.creator.identifierSILVESTRO MESEKA: 0000-0003-1004-2450
cg.researchthemeBIOTECH & PLANT BREEDING
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectCowpea
cg.iitasubjectGrain Legumes
cg.iitasubjectPlant Genetic Resources
cg.journalLegume Research
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid106037
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.18805/lr-463


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