Genetic diversity and population structure of Rheum tanguticum (Dahuang) in China.

ABSTRACT:

Background

Wild Rheum tanguticum (Dahuang in Chinese) has becoming endangered in China. This study aims to examine the genetic structure and genetic diversity of R. tanguticum within species, and the genetic differentiation within and among populations in China.

Methods

The variability and structure of 19 populations of R. tanguticum were investigated by their chloroplast DNA matK sequences. The genetic diversity index was calculated by Dnasp, PERMUT, and Arlequin 3.0 software, and a neighbor-joining (NJ)-tree was constructed by MEGA 5.0 software.

Results

Fifteen haplotypes were obtained based on the matK sequence analysis. The mean genetic diversity within species was 0.894, and the genetic variability among populations (67.6%) was relatively higher than that within

SUBMITTER: Zhang X 

PROVIDER: S-EPMC4223855 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature