Assessing genetic diversity in a germplasm collection of kola trees (Cola nitida (Vent.) Schott and Endl.) using enzymatic markers
2005
The genetic diversity of a germplasm collection of kola trees (Cola nitida (Vent.) Schott and Endl.) maintained in Cote d'Ivoire and consisting of accessions originating from Cote d'Ivoire, Guinea and Nigeria, was assessed using 6 enzyme systems and 11 loci. These enzyme systems were GPI with 3 loci and 17 alleles, PGM (2loci,4 alleles), IDH (2loci, 3 alleles), EST (l locus, 3 alleles),ACP (1 locus, 2 alleles) and MDH (2 loci, 5 alleles). Nine of the 11 loci were polymorphic. A hierarchical ascendant classification (cluster analysis) revealed that the total population was structured into three genetically distinct and di versified groups: A, Band C. The fixation index (F) and the inbreeding coefficient within subpopulation (F;) were found to be +0.20 and -0.15, respectively. The three groups (A, B and C) differ at allele f of the locus Gpi-2 and the alleles e,f and g of the locus Gpi-3. Each group is heterogeneous and contained both Ivorian, Guinean and Nigerian genotypes. The originality of these groups was confirmed by a factorial discriminant analysis. The results led to the conclusion that the three populations studied would have had a common centre of dispersion.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
4
Citations
NaN
KQI