Higher genetic diversity and gene flow in wild populations of Miscanthus sinensis in southwest China

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• 作者：Wen-Zhi Xu^a ; Xin-Quan Zhang^a ; ^{zhangxq8@hotmail.com} ; Lin-Kai Huang^a ; Gang Nie^a ; Jian-Ping Wang^b
• 关键词：Miscanthus sinensis ; EST-SSR ; Genetic diversity ; Gene flow
• 刊名：Biochemical Systematics and Ecology
• 出版年：2013
• 出版时间：June, 2013
• 年：2013
• 卷：48
• 期：Complete
• 页码：174-181
• 全文大小：298 K

文摘

Miscanthus sinensis, a C₄ perennial grass, is widely distributed in most parts of China. M. sinensis has been selected as a candidate for bioenergy resources, owing to its high biomass potential and good adaptability on marginal lands. In this study, we detected the genetic diversity in wild populations of M. sinensis in southwest China. The results showed the percentage of polymorphic bands is 93.2 % , the average Nei's gene diversity in population was 0.3870 and mean Shannon index was 0.5589. The mean of total gene diversity (H_T) was 0.3831?¡À?0.0216, while the allelic diversity within populations (H_S) and among populations (D_ST) was 0.3127?¡À?0.0161 and 0.0704, respectively. The genetic differentiation coefficient (G_ST) was 0.1838, and the gene flow (N_m) was 1.110. The wild populations of M. sinensis have high genetic diversity within each population than among populations. As M. sinensis has a large phenotypic variation in many traits that are important for biomass yield, the best yielding genotypes could be bred into hybrids with low input and high output bioenergy crops.