Genetic diversity and differentiation within three species of the family Lauraceae in southeast China

被引:13
作者
Zhang, Rui [1 ]
Zhou, Zhichun [1 ]
Jin, Guoqing [1 ]
Wang, Shenghua [2 ]
Wang, Xiuhua [1 ]
机构
[1] CAF, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China
[2] Yanqian Forestry Stn Sanming City, Sanming 365005, Fujian, Peoples R China
关键词
Phoebe chekiangensis CB Shang; Phoebe bournei (Hemsl.) Yang; Machilus pauhoi kanehira; Genetic diversity; Genetic differentiation; POPULATIONS; WIDESPREAD; BARRIERS; RARE; DIVERGENCE; PATTERNS; MARKERS; FLOW;
D O I
10.1016/j.bse.2012.06.007
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A comparative analysis was undertaken of the genetic diversity and genetic structure of three coordinal tree species from southeastern China. The species Phoebe chekiangensis C.B. Shang, Phoebe bournei (Hemsl.) Yang and Machilus pauhoi kanehira are all valued for their timber. Nine populations from two provinces were screened for variability with ISSR markers. Percentage of polymorphic loci, Nei's gene diversity, and Shannon's index were lower in P. chekiangensis (PPL% = 78.8%, h = 0.2301, and I = 0.3522) than in P. bournei (PPL % = 90.3%, h = 0.3223, and I = 0.4776) or M. pauhoi kanehira (PPL% = 92.0%, h = 0.3714, and I = 0.5412). Larger populations were found to possess greater genetic diversity. Distinct genetic differentiation was found to have taken place in P. bournei, and barrier analysis showed two barriers in the four populations studied. Special environments were found to influence population differentiation. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:317 / 324
页数:8
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