文献类型：期刊文献

英文题名：Genetic diversity and population structure of Toona ciliata revealed by simple sequence repeat markers

作者：Zhan, Xin[1] Li, Pei[1] Hui, Wenkai[2] Deng, Yanwen[1] Gan, Siming[3] Sun, Ye[1] Zhao, Xianhai[1] Chen, Xiaoyang[1] Deng, Xiaomei[1]

第一作者：Zhan, Xin

通信作者：Deng, XM[1]

机构：[1]South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangdong Key Lab Innovat Dev & Utilizat Forest P, Coll Forestry & Landscape Architecture, Guangzhou, Guangdong, Peoples R China;[2]Sichuan Agr Univ, Key Lab Ecol Forestry Engn Sichuan Prov, Coll Forestry, Chengdu, Sichuan, Peoples R China;[3]Chinese Acad Forestry, Key Lab State Forestry Adm Trop Forestry Res, Res Inst Trop Forestry, Guangzhou, Guangdong, Peoples R China

年份：2019

卷号：33

期号：1

起止页码：214-222

外文期刊名：BIOTECHNOLOGY & BIOTECHNOLOGICAL EQUIPMENT

收录：;EI(收录号：20190306386321);Scopus(收录号：2-s2.0-85059931072);WOS:【SCI-EXPANDED(收录号:WOS:000481743300001)】；

基金：This study was supported by public welfare projects of the National Forestry Bureau, People's Republic of China under grant number 201004020.

语种：英文

外文关键词：Genetic diversity; population structure; Toona ciliata; SSR markers

摘要：Toona ciliata (Meliaceae) is a rare, fast-growing commercial tree species that produces red timber with beautiful grains. It used to be widely distributed in the past, but few natural forests exist in the field now. Here, we tested 12 nuclear microsatellite markers derived from 551 individuals of 29 populations in China, and investigated the genetic diversity and population structure in T. ciliata. Our results revealed 146 alleles obtained from all of the populations studied here, with an average polymorphic information content of 0.723. The populations could be divided into two major genetic lineages using STRUTURE analysis: 14 and 15 populations from different provinces clustered in Western and Eastern genetic lineages, respectively. The genetic differentiation among the two genetic lineages was 28%. The genetic diversity of the Western lineage was higher than that of the Eastern lineage. Moreover, a Mantel test of the relationship between genetic and geographic distances revealed significantly positive correlations both among all 29 populations and within the Eastern genetic lineage, whereas there was no significant correlation in the Western genetic lineage. Therefore, in the conservation strategy of T. ciliatare sources, the two genetic lineages should be treated independently. To the best of our knowledge, these data are the first detailed characterization of the genetic structure and diversity of T. ciliata populations using nuclear microsatellite markers. The obtained results lay the foundation for preservation of the T. ciliata germplasm resources and support further artificial breeding efforts.