• Contact Us
    • Send Feedback
    • Login
    View Item 
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • 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?

    Diallel analysis of cassava genotypes to anthracnose disease

    Thumbnail
    View/Open
    owolade-diallel-2006.pdf (39.75Kb)
    Date
    2006
    Author
    Owolade, F.
    Dixon, A.
    Adeoti, A.
    Type
    Journal Article
    Metadata
    Show full item record
    Abstract/Description
    Cassava anthracnose disease (CAD) caused by Colletotrichum gloeosporioides f. sp manihotis has been recognized as one of the major economic disease of cassava in all the cassava growing regions of Africa. Little information is available on the resistance of cassava to C. Gloeosporioides f. Sp manihotis. This study was conducted to determine the relative importance of general (GCA) and specific (SCA) combining ability, maternal and non-maternal reciprocal effects on resistance to C. Gloeosporioides f. sp manihotis in selected cassava genotypes. A complete diallel mating scheme including reciprocals of nine resistant and susceptible genotypes of cassava were evaluated in the field over a period of two planting seasons. The combining ability analysis revealed that both the additive and nonadditive gene effects were present. Crosses between the resistant lines and susceptible genotypes showed intermediate disease reaction to CAD suggesting a polygenic system of resistance to the disease. The significant maternal and specific reciprocal differences among the parents and crosses indicated that maternal and/or cytoplasmic inheritance is involved in the reaction of cassava genotypes to Colletotrichum gloeosporioides f. Sp manihotis. The significant genotype X environment interaction suggested lack of stability in the development of lesions/cankers on cassava stems. Therefore, recurrent selection would be appropriate for accumulating genes for resistance to CAD in cassavaand progeny performance may not be based on their parents performance per se.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3042
    IITA Subjects
    Farm Management; Genetic Improvement; Farming Systems; Handling, Transport, Storage And Protection Of Agricultural Products; Plant Genetic Resources; Disease Control; Pests Of Plants; Plant Breeding; Livelihoods; Plant Health; Plant Production; Plant Diseases
    Agrovoc Terms
    Collectotichum Gloeosporiodes F. Sp Manihotis; Combining Ability; Cassava Genotypes; Diallel; Manihot Esculenta; Resisitance; Cassava Anthracnose Disease
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository