SSR markers based genetic diversity of populations of Rosa odorata Sweet var.gigantea in Yunnan Province

The genetic diversity of eight natural populations of Rosa odorata Sweet var.gigantea Rehd.et Wils.in Yunnan Province was analyzed with SSR markers.The result showed that 72 bands were amplified with twelve polymorphic primers.Polymorphic loci were 70 and percentage of polymorphism was 97.22%.At the level of species,the Nei's genetic diversity was 0.301 2 and the Shannon information index was 0.460 0,showing that the genetic diversity of the populations of Rosa odorata Sweet var.gigantea in Yunnan Province was abundant.It was 69.49% of genetic variation within populations,and 30.51% of genetic variation among populations.So the genetic variation within populations was the main reason of the genetic variation.The Nei's pairwise genetic identity and genetic distance were 0.761 5-0.934 8 and 0.067 4-0.272 4.The cluster analysis based on genetic distance showed that the genetic distance was not significantly related with the geographic location.