Genetic diversity of Stipa grandis P.Smirn populations across the species’ range in the Inner Mongolia Plateau of China |
| |
Authors: | Jian-bo Wu Yu-bao GaoXiao-ying Bao Hui GaoMei-qing Jia Jie LiNian-xi Zhao |
| |
Institution: | College of life science, Nankai University, Tianjin 300071, PR China |
| |
Abstract: | In order to investigate the genetic diversity of dominant species under the background of climate change and grassland utilization in the Inner Mongolia Plateau of China, we sampled seven Stipa grandis populations along an increasing aridity gradient in the present study. The Nei’s gene diversity of populations (He) was estimated to be 0.15 and the percentage of polymorphic loci (PPL) was 49.28%. The genetic differentiation among populations (ΦST) was 0.2431. There was a significant relationship between genetic distance and geographic distance among the S. grandis populations by Mantel's test. The genetic diversity was significantly correlated with longitude and annual mean precipitation, which suggested that a combination of climatic factors affected the genetic diversity. The populations in the marginal habitat should be paid more attention because of their low genetic diversity and its significance for conservation of the whole species. |
| |
Keywords: | Stipa grandis P Smirn Aridity gradient Genetic diversity Genetic differentiation AFLP |
本文献已被 ScienceDirect 等数据库收录! |