• 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?

    Traits that define yield and genetic gain in east African highland banana breeding

    Thumbnail
    View/Open
    Journal Article (366.0Kb)
    Date
    2021
    Author
    Batte, M.
    Swennen, R.
    Uwimana, B.
    Akech, V.
    Brown, A.
    Geleta, M.
    Ortiz, R.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    East African highland bananas (Musa spp. AAA group) are an important staple in the Great Lakes region of East Africa. Their production has declined due to pests and diseases. Breeding for host plant resistance is a sustainable option for addressing this challenge. Understanding the relationships between growth parameters and bunch weight (i.e., yield) is crucial to guide breeding efforts for this crop. We investigated cause-effect relationships, through path analysis, in bunch weight of East African highland banana derived hybrids, their parents and grandparents. These family structures were planted in a 7 × 8 rectangular lattice design, replicated twice. Genetic gains for bunch weight (kg plant−1) and yield potential (t ha−1 year−1) were estimated. Significant increases of bunch weight and yield potential were noted from the landrace triploid germplasm, their derived primary tetraploid hybrids and secondary triploid bred-germplasm. Path analysis revealed that fruit length, circumference and number, number of hands and plant cycle number had a direct positive effect on the bunch weight. Days to fruit filling, days to maturity and index of non-spotted leaves had indirect effects on bunch weight. The average genetic gains for bunch weight and yield potential were 1.4% and 1.3% per year, respectively. This is the first report about genetic gains in banana breeding. Our findings may be useful for assessing progress and directing future breeding efforts in banana breeding.
    https://dx.doi.org/10.1007/s10681-021-02920-x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7269
    IITA Authors ORCID
    Michael Battehttps://orcid.org/0000-0002-6793-2967
    Rony Swennenhttps://orcid.org/0000-0002-5258-9043
    Brigitte Uwimanahttps://orcid.org/0000-0001-7460-9001
    Allen Brownhttps://orcid.org/0000-0002-4468-5932
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1007/s10681-021-02920-x
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Agronomy; Banana; Food Security; Genetic Improvement; Plant Breeding; Plant Genetic Resources; Plant Production; Value Chains
    Agrovoc Terms
    Bananas; East Africa; Path Analysis; Yields; Genetic Gain; Breeding
    Regions
    Africa; East Africa
    Countries
    Uganda
    Hubs
    Southern Africa Hub
    Journals
    Euphytica
    Collections
    • Journal and Journal Articles4842
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository