| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1354430 | Biochemical Systematics and Ecology | 2011 | 9 Pages |
Nineteen populations of Clintonia udensis Trautv. & Mey. were examined to quantify genetic diversity and genetic structure by chloroplast DNA microsatellites (cpSSR). Significant cpSSR genetic diversity (PPB = 63.64%) was detected in this species. Tetraploid populations demonstrated approximately the same level of genetic diversity as the diploid ones. A significant differentiation, however, was found between tetraploids and diploids. Most of the sixteen chloroplast haplotypes were limited to a single population. The level of haplotype diversity was high (Hd = 0.915). AMOVA, PCA and Bayesian clustering analysis revealed that there were significant genetic differences among populations. Inter-population genetic distances among population sites correlated significantly with geographic distances. These results indicate that the mixed-mating – breeding system, limited gene flow, environmental stress, and historical factors may be the main factors causing geographical differentiation in the genetic structure of C. udensis.
Research highlights► Clintonia udensis Trautv. & Mey. had a fair level of genetic diversity. ► Tetraploidy showed an equal level of genetic diversity with that of diploidy. ► Most of the sixteen chloroplast haplotypes were limited in a single population. ► There were significant genetic differences among populations.
