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    Genetic analysis of yield and quality characteristics in provitamin A hybrid cassava families in Ghana

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    Journal Article (272.1Kb)
    Date
    2021
    Author
    Peprah, B.B.
    Parkes, E.
    Kulakow, P.
    van Biljon, A.
    Labuschagne, M.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Cassava is the most widely cultivated and consumed crop in Ghana. Malnutrition is endemic in cassava-producing regions of Africa, partly due to the low micronutrient content of this crop. The aim of this study was to generate genetic information on characteristics such as total carotenoid content, dry matter content, root weight and number, and cassava mosaic disease (CMD), and their possible combination in cassava clones, using a North Carolina II breeding scheme. Five genetically diverse yellow-fleshed clones at advanced selection stages, with CMD resistance, were used as females and two high dry matter content white-fleshed clones, selected from farmers’ fields in Ghana, were used as males. Ten F1 families were generated, and evaluated at two locations in Ghana. General combining ability (GCA) mean squares were larger than specific combining ability (SCA) mean squares for harvest index, CMD, and carotenoid content, indicating additive genetic effects. The positive significant correlations that were observed between pulp color and carotenoid content; carotenoid content and CMD; pulp color and CMD; and pulp color and cortex color, make the screening of large numbers of progenies possible in the cassava breeding program. This could allow breeders to combine carotenoid content and CMD at the early breeding stages through visual assessment of pulp color and CMD symptoms. Large numbers of genotypes can be evaluated and a few can be selected to be quantified for carotenoid content at later stages of the breeding program, to save costs. One of the parents (P6), showed positive GCA effects for carotenoid content, dry matter content, CMD and storage root weight, hence could be used as a parent to generate clones that combine carotenoid content and dry matter content.
    https://dx.doi.org/10.3390/agronomy11101911
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7343
    IITA Authors ORCID
    E J Parkeshttps://orcid.org/0000-0003-4063-1483
    Peter Kulakowhttps://orcid.org/0000-0002-7574-2645
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.3390/agronomy11101911
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Agronomy; Cassava; Food Security; Genetic Improvement; Plant Breeding; Plant Production
    Agrovoc Terms
    Cassava; Dry Matter Content; Carotenoids; Genetics; Roots; Yields
    Regions
    Africa; West Africa
    Countries
    Ghana
    Hubs
    Headquarters and Western Africa Hub
    Journals
    Agronomy
    Collections
    • Journal and Journal Articles4836
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