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    Ploidy levels of Dioscorea alata L. germplasm determined by flow cytometry

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    S09ArtObidiegwuLevelsInthomDev.pdf (187.4Kb)
    S09ProcObidiegwuPloidyNothomDev.PDF (785.5Kb)
    Date
    2009
    Author
    Obidiegwu, J.E.
    Rodríguez, E.
    Ene-Obong, E.E.
    Loureiro, J.
    Muoneke, C.
    Santos, C.
    Kolesnikova-Allen, M.
    Asiedu, Robert
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Dioscorea alata L. is a highly important crop, widely distributed in the humid and semi-humid tropics. Flow cytometry was used to determine the ploidy levels of 74 D. alata genotypes collected mainly from West African countries. Sixty three of the genotypes were found to be tetraploid, one was hexaploid and ten were octoploid. The high percentage of tetraploids together with the small percentage of hexaploid individuals and the absence of diploid individuals gives us some more clues on the possible origin of these species. No association between ploidy level and place of cultivation was found for the tested material. The obtained results represent important knowledge for enhancing the breeding methodologies and optimize germplasm management of this species. It also offers further insights to the phylogeny and evolution of Dioscorea species.
    https://dx.doi.org/10.1007/s10722-009-9473-8
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2498
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1007/s10722-009-9473-8
    IITA Subjects
    Yam; Plant Breeding; Plant Genetic Resources
    Agrovoc Terms
    Breeding; Dioscorea Alata; Flow Cytometry; Genetic Resources; Germplasm; Ploidy Level
    Regions
    Africa; West Africa; Central Africa
    Countries
    Benin; Congo; Cote D'Ivoire; Ghana; Nigeria; Sierra Leone; Togo
    Journals
    Genetic Resources and Crop Evolution
    Collections
    • Journal and Journal Articles5283
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