• Contact Us
    • Send Feedback
    • Login
    View Item 
    •   Home
    • Books and Book Chapters
    • Books and Book Chapters
    • View Item
    •   Home
    • Books and Book Chapters
    • Books and Book Chapters
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    Whole Repository
    CollectionsIssue DateRegionCountryHubAffiliationAuthorsTitlesSubject
    This Sub-collection
    Issue DateRegionCountryHubAffiliationAuthorsTitlesSubject

    My Account

    Login

    Welcome to the International Institute of Tropical Agriculture Research Repository

    What would you like to view today?

    Wide crossing in African Vigna species

    Thumbnail
    View/Open
    U97InbkFatokunWideNothomNodev.pdf (1.853Mb)
    Date
    1997
    Author
    Fatokun, C.A.
    Perrino, P.
    Ng, N.Q.
    Type
    Book Chapter
    Metadata
    Show full item record
    Abstract/Description
    The genus Vigna comprises seven subgenera and sixteen sections. Cowpea, Vigna tingnicnlatti (L.) Walp.. is an important grain legume crop in sub-Saharan Africa and belongs to the subgenus Vigna. section Ctitiang. Morphologically, cowpea genotypes appear very variable. However, a high level of genome homology exists among the varieties and this, probably, is because genomes of cowpca's wild relatives have not been exploited while these varieties were being developed. Cowpea varieties are susceptible to some insect pests, especially the pod borer. Manica vitrata, and a podsucking bug complex, both of which can cause high seed yield losses. Accessions of some wild Vigmi species, e.g. V. oblong/folia and V vexillata, are known to be resistant to these pests, and efforts continue lo be made, through wide crossing, to transfer the resistance genes from these species to cultivated cowpea. So far cowpea has been successfully crossed only to genotypes belonging in section Catiang. Among the noncultivated African Vigna .vpecies. there have been successful crossesm between V. oblongifolia and Iwo others. V. ambacensis and V. lureola. Although the hybrids are only partially fertile. Embryo rescue was used to recover an F| interspecific hybrid between V. oblongifolia and V. luieola. All three species belong to section Vigna of the subgenus Vigna. A successful cross has also been carried out between V. davyi and V. vexillaia, both members of the subgenus Plectoiropis
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3987
    IITA Subjects
    Plant Genetic Resources; Plant Health; Crop Husbandry; Disease Control; Pests Of Plants; Plant Breeding; Plant Production; Plant Diseases; Farm Management; Smallholder Farmers
    Agrovoc Terms
    Cowpeas; Genotypes; Farmers; Vigna Uniguiculata; Germplasm; Gene Pool; Pests; Pod Borer; Pod Sucker Bugs
    Regions
    Africa; Acp; West Africa; Europe
    Countries
    Nigeria; Italy
    Collections
    • Books and Book Chapters953
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository