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    Breeding for resistance to Striga and Alectra in cowpea

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    Date
    1991
    Author
    Singh, B.B.
    Emechebe, A.M.
    Type
    Conference Paper
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    Abstract
    An outline is given of the progress made in a systematic breeding programme set up in Nigeria to develop improved cowpea cultivars with combined resistance to Striga gesnerioides and Alectra vogelii along with multiple disease and insect resistance. Several sources of resistance to both parasitic weeds have been identified. Of these, B301, a land race from Botswana has shown complete resistance to S. gesnerioides and A. vogelii. This was crossed with a susceptible cultivar, IT84S-2246-4, which is resistant to aphids, bruchids, thrips and 10 diseases and has a high yield potential. The F1 plants were back-crossed with cv. IT84S-2246-4 and segregating populations were screened for resistance to S. gesnerioides, A. vogelii and various insects and diseases. Several F6 breeding lines have now been developed which look very similar to cv. IT84S-2246-4, with combined resistance to S. gesnerioides, A. vogelii, aphids, bruchids, thrips and a variety of diseases Parasitic plant
     
    striga gesnerioides
     
    plant breeding
     
    weeds
     
    alectra
     
    vigna unguiculata
     
    plant genetics
     
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5904
    IITA Subjects
    Plant Breeding; Weeds; Plant Genetics; Plant Genetic Resources
    Agrovoc Terms
    Parasitic Plants; Striga Gesnerioides; Plant Breeding; Weeds; Alectra; Vigna Unguiculata; Plant Genetics
    Regions
    Africa; Africa South Of Sahara; West Africa
    Countries
    Botswana
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    • Conference Documents594
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