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    Performance of cowpea varieties under Striga gesnerioides (Willd.) Vatke infestation using biplot analysis

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    S17ArtOmoiguiPerformanceInthomDev.pdf (862.5Kb)
    Date
    2017-11
    Author
    Omoigui, L.O.
    Kamara, A.Y.
    Ajeigbe, Hakeem A.
    Akinwale, R.O.
    Timko, M.P.
    Oyekunle, M.
    Bello, L.L.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Striga gesnerioides (Willd) Vatke, is a major destructive parasitic weed of cowpea (Vigna unguiculata (L.) Walp.) which causes substantial yield reduction in West and Central Africa. The presence of different virulent races within the parasite population contributes to significant genotype × environment interaction, and complicates breeding for durable resistance to Striga. A 3-year study was conducted at three locations in the dry savanna agro-ecology of Nigeria, where Striga gesnerioides is endemic. The primary objective of the study was to identify cowpea genotypes with high yield under Striga infestation and yield stability across test environments and to access suitability of the test environment. Data collected on grain yield and yield components were subjected to analysis of variance (ANOVA). Means from ANOVA were subjected to the genotype main effect plus genotype × environment (GGE) biplot analysis to examine the multi-environment trial data and rank genotypes according to the environments. Genotypes, environment, and genotypes × environment interaction mean squares were significant for grain yield and yield components, and number of emerged Striga plants. The environment accounted for 35.01%, whereas the genotype × environment interaction accounted for 9.10% of the variation in grain yield. The GGE biplot identified UAM09 1046-6-1 (V7), and UAM09 1046-6-2 (V8), as ideal genotypes suggesting that these genotypes performed relatively well in all study environments and could be regarded as adapted to a wide range of locations. Tilla was the most repeatable and ideal location for selecting widely adapted genotypes for resistance to S. gesnerioides.
    http://dx.doi.org/10.1007/s10681-017-2034-x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2271
    Digital Object Identifier (DOI)
    http://dx.doi.org/10.1007/s10681-017-2034-x
    IITA Subjects
    Cowpea; Genetic Improvement; Grain Legumes; Plant Genetic Resources
    Agrovoc Terms
    Cowpeas; Analysis; Vigna Unguiculata; Striga Infestation; Genotypes; Biplot Analysi; Striga Gesnerioides; Gge
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Euphytica
    Collections
    • Journal and Journal Articles5283
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