s:1626:"TI Analysis of genetic diversity in accessions of Irvingia gabonensis (Aubry-Lecomte ex O'Rorke) Baill 
AU Ude, G. 
AU Dimkpa, C. 
AU Anegbeh, P. 
AU Shaibu, A. 
AU Tenkouano, A. 
AU Pillay, M. 
AU Tchoundjeu, Z. 
AB Amplified fragment length polymorphism (AFLP) was used to assess genetic diversity and relationshipsamong 15 accessions of Irvingia gabonensis collected from Cameroun, Gabon, and Nigeria. TwelveAFLP+3 primers produced 384 polymorphic fragments. Average genetic distance (AGD) between the 15accessions 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, indicatingmore genetic diversity in Cameroun than Nigeria and Gabon. The unweighted pair-group method of thearithmetic average (UPGMA) and principal coordinate analysis (PCO) showed a clear distinctionbetween the Gabon and Nigeria accessions into two separate clusters, with accessions from Camerounoverlapping them. Principal coordinate analysis (PCO) indicated a closer relationship betweenaccessions from Cameroun and Gabon. In general the Cameroun germplasm appears to be a bridgebetween the genetically isolated Nigeria and Gabon accessions. This overlap of Gabon and Nigerianaccessions by the accessions from Cameroun may be an indication that Cameroun is the center ofdiversity 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 theexisting genetic diversity in I. gabonensis. 
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