文献类型：期刊文献

英文题名：Genetic diversity and genetic relationships of Chukrasia spp. (Meliaceae) as revealed by inter simple sequence repeat (ISSR) markers

作者：Wu, Chong[1,2] Zhong, Chonglu[1] Zhang, Yong[1] Jiang, Qingbin[1] Chen, Yu[1] Chen, Zhen[1] Pinyopusarerk, Khongsak[3] Bush, David[3]

第一作者：Wu, Chong

通信作者：Zhong, CL[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[2]Shandong Acad Agr Sci, Shandong Inst Pomol, Tai An 271000, Shandong, Peoples R China;[3]CSIRO Plant Ind, Canberra, ACT 2601, Australia

年份：2014

卷号：28

期号：6

起止页码：1847-1857

外文期刊名：TREES-STRUCTURE AND FUNCTION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000345145100025)】；

基金：The study was funded by Chinese government 948 Project No. 2009-4-02, Introduction of genetic resources of Manglietia conifera and Chukrasia tabularis, and SFC project of Guangdong. CSIRO Australian Tree Seed Centre kindly provided the seeds. We thank Assoc. Prof. Junling Shen, Qingdao Agricultural University for assistance with data analysis, and Dr Washington Gapare, CSIRO Plant Industry for valuable comments on the draft manuscript.

语种：英文

外文关键词：Chukrasia tabularis; C. velutina; Meliaceae; ISSR; Genetic diversity; Population structure; Cluster and principal coordinate analysis

摘要：Key message ISSR characterization of Chukrasia populations from the natural range revealed two distinct groups of populations consonant with morphological differentiation. Results suggest the current taxonomic classification of the genus should be reviewed. There are different views as to whether the genus Chukrasia (Meliaceae) consists of one species, C. tabularis, or two species C. tabularis and C. velutina. Despite a clear pattern of variation in many morphological characteristics such as leaves and bark, some authors regard the latter merely an ecotype of the former in seasonal forest. In the present study, we used ISSR markers to determine the genetic diversity and population structure among 23 Chukrasia subpopulations from across the natural range in Asia. Molecular analysis clearly differentiated two distinct groups of subpopulations, corresponding to the putative species, as well as well-defined subpopulations corresponding to geographic regions within the two groups. The molecular results are in concordance with morphological differentiation and corresponded to the two recognized taxa. The present study suggests that current taxonomic classification of the genus Chukrasia should be reviewed.