文献类型：期刊文献

英文题名：Male and Female Subpopulations of Salix viminalis Present High Genetic Diversity and High Long-Term Migration Rates between Them

作者：Zhai, Feifei[1,2,3] Mao, Jinmei[1,2,3,4] Liu, Junxiang[1,2,3] Peng, Xiangyong[1,2,3] Han, Lei[1,2,3] Sun, Zhenyuan[1,2,3]

第一作者：Zhai, Feifei

通信作者：Sun, ZY[1];Sun, ZY[2];Sun, ZY[3]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Beijing, Peoples R China;[3]State Forestry Adm, Key Lab Tree Breeding & Cultivat, Beijing, Peoples R China;[4]Xinjiang Acad Forestry, Res Inst Econ Forest, Xinjiang, Peoples R China

年份：2016

卷号：7

期号：MAR2016

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000372184400002)】；

基金：The authors sincerely thank Nan Jiang and Xiaoxuan Jia of Chinese Academy of Forestry for their help in drawing picture. Research in the laboratories has been supported by funding from the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (Grant No. CAFYBB2016ZX01-3) and Special Fund for Forest Scientific Research in the Public Welfare of China (Grant No. 201304115).

语种：英文

外文关键词：dioecy; Salix viminalis; genetic diversity; genetic differentiation; migration rate

摘要：Dioecy distributed in 157 flowering plant families and 959 flowering plant genera. Morphological and physiological differences between male and female plants have been studied extensively, but studies of sex-specific genetic diversity are relatively scarce in dioecious plants. In this study, 20 SSR loci were employed to examine the genetic variance of male subpopulations and female subpopulations in Salix viminalis. The results showed that all of the markers were polymorphic (N-a = 14.15, H-e = 0.7566) and workable to reveal the genetic diversity of S. virninalis. No statistically significant difference was detected between male and female subpopulations, but the average genetic diversity of male subpopulations (N-a = 7.12, H-e = 0.7071) and female subpopulations (N-a = 7.31, H-e = 0.7226) were high. Under unfavorable environments (West Liao basin), the genetic diversity between male and female subpopulations was still not significantly different, but the genetic diversity of sexual subpopulations were lower. The differentiation of the ten subpopulations in S. viminalis was moderate (F-ST = 0.0858), which was conformed by AMOVA that most of genetic variance (94%) existed within subpopulations. Pairwise F-ST indicated no differentiation between sexual subpopulations, which was accompanied by high long-term migrate between them (M = 0.73 similar to 1.26). However, little recent migration was found between sexual subpopulations. Therefore, artificial crossing or/and transplantation by cutting propagation should be carried out so as to increase the migration during the process of ex situ conservation.