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    Genetic diversity of South African sweetpotato germplasm using molecular markers

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    Journal Article (1.797Mb)
    Date
    2019
    Author
    Selaocoe, M.E.
    Adebola, P.
    Pillay, M.
    Laurie, S.M.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Sweetpotato (Ipomoea batatas L.(LAM)) is one of the most important food crops in developing countries, including South Africa. Most sweetpotato varieties in South Africa are cream or white fleshed and lack the essential beta-carotene of the orange-fleshed varieties. To develop new varieties with high beta-carotene, knowledge of the genetic variation of the crop is needed. The objectives of this study were to assess the genetic relationships among 30 orange- and cream-fleshed sweetpotato accessions by (i) examining the variation in leaf proteins and (ii) using random amplified polymorphic DNA (RAPD). The polymorphism levels of the proteins and RAPD assays were 55.6% and 98%, respectively. The dendrograms generated from all the analyses clustered the accessions according to their flesh color and country of origin. Analysis of molecular variance (AMOVA) found a significant difference between the South African and non-South African germplasm. The high genetic diversity in the South African sweetpotato germplasm is a positive indicator for a breeding program that has a number of targets, such as breeding for nutritional improvement, disease resistance and drought tolerance.
    https://dx.doi.org/10.1080/15427528.2019.1671930
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/6872
    IITA Authors ORCID
    Patrick Adebolahttps://orcid.org/0000-0002-5155-6194
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1080/15427528.2019.1671930
    IITA Subjects
    Agronomy; Biodiversity; Genetic Improvement; Plant Genetic Resources
    Agrovoc Terms
    Proteins; Rapd; Sweet Potatoes; Genetic Markers; Germplasm; Genetic Variation
    Regions
    Africa; Southern Africa
    Countries
    South Africa
    Hubs
    Southern Africa Hub
    Journals
    Journal of Crop Improvement
    Collections
    • Journal and Journal Articles4835
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