文献类型：期刊文献

英文题名：Assessing genetic diversity and population structure of Salix viminalis across Ergun and West Liao basin

作者：Zhai, Fei-Fei[1,2,3,4] Liu, Jun-Xiang[1,2,3] Li, Zhen-Jian[1,2,3] Mao, Jin-Mei[1,2,3,5] Qian, Yong-Qiang[1,2,3] Han, Lei[1,2,3] Sun, Zhen-Yuan[1,2,3]

第一作者：Zhai, Fei-Fei

通信作者：Sun, ZY[1];Sun, ZY[2];Sun, ZY[3]

机构：[1]State Key Lab Tree Genet & Breeding, Beijing 10091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Beijing 10091, Peoples R China;[3]State Forestry Adm, Key Lab Tree Breeding & Cultivat, Beijing 10091, Peoples R China;[4]Henan Polytech Univ, Sch Architectural & Artist Design, Century Ave, Jiaozuo 454000, Henan, Peoples R China;[5]Xinjiang Acad Forestry, Res Inst Econ Forest, Urumqi, Xinjiang, Peoples R China

年份：2017

卷号：51

期号：3

外文期刊名：SILVA FENNICA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000405579900001)】；

基金：The work presented here was supported by the Special Fund for Forest Scientific Research in the Public Welfare (201304115), Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2016ZX001-3) and Doctoral Scientific Fund Project of Henan Polytechnic University (B2017-40). We would like to express our sincere gratitude to Zhi-gang Yan and Rong-kui Li (Research Institute of Forestry Science and Technology, Da Hinggan Mountains in Inner Mongolia) for collecting samples across Ergun basin, and Yu-jun Lin (Forestry Bureau of Songshan District, Chifeng City) for sampling across West Liao basin. We sincerely thank Nan Jiang of Chinese Academy of Forestry for her help in drawing picture.

语种：英文

外文关键词：microsatellites; genetic variation; geographic barrier; basket willow; common osier

摘要：Salix viminalis L. is an important shrub that has potential for use as a bioenergy crop, for phytoremediation of heavy metal contaminated soil and sewage sludge treatment. It is mainly distributed in the northeast of China, but the species has not yet been used a resource here. We examined the genetic diversity and population structure of populations from the Ergun basin and West Liao basin using 20 microsatellite markers. A high level of genetic diversity (N-a = 16.45, H-e = 0.742) was detected for S. viminalis, and populations from the Ergun basin exhibited higher genetic diversity and private alleles numbers than the West Liao basin. The 12 populations could be divided into two clusters by both Bayesian analysis and UPGMA clustering which were consistent with the populations derived from the two basins. Moderate population differentiation (F-ST = 0.076) was shown in S. viminalis, and AMOVA analysis confirmed that most of the genetic variation (86.13%) was attributed to individual differences within populations, while 11.49% was attributed to differences between basins and 2.38% to differences within each basin. Significant correlations of F-ST/(1- F-ST) with log (geographic distance) among 12 populations (r = 0.634, p. 0.00) and 10 populations within the Ergun basin (r = 0.482, p = 0.0002) indicated that geographical distance was the principal factor influencing genetic structure. As most of genetic variation exist within populations, so protection measures should be focused on populations with higher genetic diversity and unique alleles, such as Tuli, Mordaga downstream, Zhadun1 and Genhe.