• Login
    View Item 
    •   KYUSpace | Home
    • Faculty of Science
    • Department of Biological sciences
    • Journal Articles
    • View Item
    •   KYUSpace | Home
    • Faculty of Science
    • Department of Biological sciences
    • Journal Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Variation among banana weevil cosmopolites sordidus (Germar) populations in Uganda as revealed by AFLP markers and corm damage differences

    Thumbnail
    View/Open
    Charles K. Twesigye...[et al].pdf (1.222Mb)
    Date
    2018-10-23
    Author
    Twesigye, Charles K.
    Ssekatawa, Kenneth
    Kiggundu, Andrew
    Tushemereirwe, Wilberforce
    Matovu, Enock
    Metadata
    Show full item record
    Abstract
    The banana weevil Cosmopolites sordidus (Germar) is a major production constraint of bananas and plantains (Musa spp.) in the world. Differences in damage levels and pesticide response across regions led to the postulation that there might be considerable variation between banana weevil populations (biotypes) with varying levels of virulence. One of the most sustainable options for banana weevil control is the use of host plant resistance. While new resistant varieties are being developed through both conventional crossbreeding and biotechnology, there is a need to assess the genetic variation of banana weevil populations from eastern, central, southern, southwestern and midwest regions of Uganda to determine whether there are biotypes with different virulence levels. This would help guide new control strategies to target all the possible biotypes. The amplified fragment length polymorphism (AFLP) technique was used to analyze population genetic diversity using four primer combinations (EcoRI/MSeI). Results: Analysis of molecular variance results presented no evidence to support significant genetic variability among the banana weevil populations from eastern, central, southern, southwestern and midwest regions. Practically, all the genetic variation was found to reside within populations (97% for sites and 98% for regions), with only approximately 3% and 2% residing among populations of sites and regions, respectively. Conclusions and recommendations: AFLP markers clustered the banana weevils into two distinct populations consequently supporting the hypothesis of possible presence of banana weevil biotypes in Uganda. However, attempts should be made to make follow-up studies on the seemingly unique population of eastern Uganda using more robust molecular techniques to establish whether the eastern Uganda population constitutes a different biotype.
    URI
    https://doi.org/10.1186/s40066-018-0227-8
    https://kyuspace.kyu.ac.ug/xmlui/handle/20.500.12504/347
    Collections
    • Journal Articles

    Kyambogo University Copyright © 2015-2022  | University Library | Search Library Catalogue | Contact Us
    KYUSpace Powered By DICTS 
     

     

    Browse

    All of KYUSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Kyambogo University Copyright © 2015-2022  | University Library | Search Library Catalogue | Contact Us
    KYUSpace Powered By DICTS