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    Analysis of genetic diversity in accessions of Irvingia gabonensis (AubryLecomte ex O Rorke) Baill

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    Authors
    Ude, G.N.
    Dimkpa, C.O.
    Anegbeh, P.O.
    Shaibu, A.A.
    Tenkouano, A.
    Pillay, M.
    Tchoundjeu, Z.
    Date
    2006
    Language
    en
    Type
    Journal Article
    Review status
    Peer Review
    Accessibility
    Open Access
    Metadata
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    Citation
    Ude, G.N., Dimkpa, C.O., Anegbeh, P.O., Shaibu, A.A., Tenkouano, A., Pillay, M. & Tchoundjeu, Z. (2006). Analysis of genetic diversity in accessions of Irvingia gabonensis (Aubry-Lecomte ex O'Rorke) Baill. African Journal of Biotechnology, 5(3), 219-223.
    Permanent link to cite or share this item: http://hdl.handle.net/10568/91359
    Abstract/Description
    Amplified fragment length polymorphism (AFLP) was used to assess genetic diversity and relationships among 15 accessions of Irvingia gabonensis collected from Cameroun, Gabon, and Nigeria. Twelve AFLP+3 primers produced 384 polymorphic fragments. Average genetic distance (AGD) between the 15 accessions was 58.7% (32-88%). AGD and range of genetic distance among accessions from Cameroun, Nigeria and Gabon were 62% (53-76%), 52% (32.3 – 84.8%) and 50% (45- 53%), respectively, indicating more genetic diversity in Cameroun than Nigeria and Gabon. The unweighted pair-group method of the arithmetic average (UPGMA) and principal coordinate analysis (PCO) showed a clear distinction between the Gabon and Nigeria accessions into two separate clusters, with accessions from Cameroun overlapping them. Principal coordinate analysis (PCO) indicated a closer relationship between accessions from Cameroun and Gabon. In general the Cameroun germplasm appears to be a bridge between the genetically isolated Nigeria and Gabon accessions. This overlap of Gabon and Nigerian accessions by the accessions from Cameroun may be an indication that Cameroun is the center of diversity of I. gabonensis and also the primary source of original materials grown in the other countries. More collection in Cameroun is necessary to ensure the optimum collection and preservation of the existing genetic diversity in I. gabonensis.
    CGIAR Affiliations
    Roots, Tubers and Bananas
    AGROVOC Keywords
    IRVINGIA GABONENSIS; ACCESSION; AMPLIFIED FRAGMENT LENGTH POLYMORPHISM; GENETIC DIVERSITY; GERMPLASM
    Subjects
    PESTS OF PLANTS; GENETIC IMPROVEMENT; DISEASE CONTROL; PLANT DISEASES; HANDLING, TRANSPORT, STORAGE AND PROTECTION OF AGRICULTURAL PRODUCTS; BANANA; FARM MANAGEMENT; FOOD SECURITY; PLANT BREEDING; PLANT GENETIC RESOURCES; PLANT PRODUCTION
    Countries
    UNITED STATES; NIGERIA; UGANDA; CAMEROON
    Regions
    ACP; AFRICA; NORTH AMERICA; WEST AFRICA; EAST AFRICA; CENTRAL AFRICA
    Collections
    • IITA Journal Articles [1862]

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