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    Inferences on pod wall and seed defenses against the brown cowpea coreid bug, Clavigralla tometosicollis Stal ( Hempptera Coreidae) in wild and cultivated Vigna species

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    Date
    2001-06
    Author
    Jackai, L.E.N.
    Nokoe, S.
    Tayo, B.O.
    Koona, P.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Studies were conducted in the laboratory to investigate the different components of the resistance of Vigna vexillata A. Richards, TVnu 72, and several cultivars of cultivated Vigna spp. to infestation and damage by the brown cowpea coreid, Clavigralla tomentosicollis Stäl. The main objective was to determine the different roles of the pod wall and seeds, and the relationship between seed size, number, and damage by this insect. Results showed that both the pod wall and seed clearly contribute different components to the resistance of TVnu 72 to C. tomentosicollis. Analysis of the results suggests that the seed defences and the pod wall pericarp may be more important than are trichomes in this resistance. Seed number was found to influence the extent of damage in a more predictable manner than seed size. However, because both of these traits are generally inversely related and mutually exclusive, their individual effects cannot be completely separated. The implications of these traits in a breeding programme targeted at a specific consumer group are discussed.
    https://dx.doi.org/10.1046/j.1439-0418.2001.00522.x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4346
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1046/j.1439-0418.2001.00522.x
    IITA Subjects
    Cowpea; Grain Legumes
    Agrovoc Terms
    Vigna Vexillata; Cowpeas; Pests; Pods; Seeds
    Regions
    Africa; West Africa
    Journals
    Journal of Applied Entomology
    Collections
    • Journal and Journal Articles4835
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