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

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    S19ArtNgalamuYieldInthomDev.pdf (171.6Kb)
    Date
    2019
    Author
    Ngalamu, T.
    Meseka, S.
    Galla, J.O.
    Tongun, N.J.
    Ochanda, N.W.
    Ofori, K.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Cowpea 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.
    https://dx.doi.org/10.18805/lr-463
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/6099
    Non-IITA Authors ORCID
    SILVESTRO MESEKAhttps://orcid.org/0000-0003-1004-2450
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.18805/lr-463
    Research Themes
    BIOTECH & PLANT BREEDING
    IITA Subjects
    Cowpea; Grain Legumes; Plant Genetic Resources
    Agrovoc Terms
    Adaptability; Cowpeas; Grain; Yields; Stability; Grain Legumes
    Regions
    Africa; East Africa
    Countries
    South Sudan
    Journals
    Legume Research
    Collections
    • Journal and Journal Articles4836
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