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    Genetic characterization of some water yam (Dioscorea alata L.) in West Africa with simple sequence repeats

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    S10UnpObidiegwuGeneticNothomDev.pdf (116.0Kb)
    Date
    2010-10
    Author
    Obidiegwu, J.E.
    Asiedu, Robert
    Ene-Obong, E.E.
    Muoneke, C.O.
    Kolesnikova-Allen, M.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    A collection of 89 water yam (Dioscorea alata L.) accessions from Benin, Congo, Côte d’Ivoire, Equatorial Guinea, Gabon, Ghana, Nigeria, Sierra Leone and Togo was assessed for genetic diversity using thirteen microsatellite loci. These 89 are some of the D. alata accessions conserved by the International Institute of Tropical Agriculture (IITA) Ibadan, Nigeria. A total of 97 alleles were detected with an average allele number of 7.46 per locus. Polymorphism information content (PIC) mean value of 0.65 showed existence of variability among the accessions. Accessions from Nigeria showed highest gene diversity of 0.678 while those from Côte d’Ivoire had lowest diversity with 0.596. Observed mean heterozygosity value of 0.469 was observed. Cluster and principal coordinate analysis showed 8 major cluster groups. There was no relationship between relatedness of the accessions and their geographical area of collection. SSR markers proved to be effective to characterise studied D. alata germplasm.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2619
    IITA Subjects
    Yam; Genetic Improvement; Impact Assessment; Disease Control; Food Security; Crop Systems; Farm Management
    Agrovoc Terms
    Core Germplasm; Dioscorea Alata; Genetic Variation; Microsatellite; Yams; Electrophoresis; Heterozygosity; Polymorphic
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Journal of Food, Agriculture & Environment
    Collections
    • Journal and Journal Articles4835
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