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    Evaluation of a novel technique for screening cowpea varieties for resistance to the seed beetle Callosobruchus maculatus

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    Date
    2002
    Author
    Deverau, A.D.
    Jackai, L.E.N.
    Olusegun, T.B.
    Asiwe, A.N.J.
    Type
    Book Chapter
    Metadata
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    Abstract/Description
    A novel method for screening cowpea varieties for resistance to the postharvest insect pest Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) was compared to conventional screening techniques at the International Institute for Tropical Agriculture (IITA) laboratory in Ibadan, Nigeria. The new technique assesses seed resistance by measuring larval feeding activity via electronic sensors. Initial smallscale trials demonstrated that the method could be successfully applied in the laboratory with a potential saving in time and effort. The results were used to design a larger scale device that was able to screen 32 varieties of cowpea in 1 9 days using a methodology designed to identify only the most resistant cowpea varieties. Resistant varieties were identified but some problems were encountered with analysis of the results. Practical application of the technique for large-scale resis tance screening is discussed.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5448
    IITA Subjects
    Cowpea; Grain Legumes; Nutrition; Food Security
    Agrovoc Terms
    Legumes; Nutrition; Foods; Cowpeas; Infestation; Biomonitoring; Screening
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
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