珍稀濒危植物半枫荷的遗传多样性及遗传结构

叶兴状; 文国卫; 张明珠; 刘益鹏; 范辉华; 张国防; 陈世品; 刘宝

doi:10.11913/PSJ.2095-0837.2021.40415

珍稀濒危植物半枫荷的遗传多样性及遗传结构

1. 福建农林大学林学院, 福州 350002;
2. 福建省林业科学研究院, 福州 350012

基金项目:

福建省第三轮种业创新与产业化工程项目（ZYCX-LY-2017002）；宁夏自治区重点研发计划（KJA19H01A）。

详细信息

作者简介:
叶兴状(1991-),男,博士研究生,研究方向为濒危植物保护与利用(E-mail:yxz@fafu.edu.cn)。

通讯作者:
刘宝,E-mail:liubao@m.fafu.edu.cn

中图分类号: Q347
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- 文章访问数: 474
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出版历程
- 收稿日期: 2021-02-06
- 修回日期: 2021-04-15
- 网络出版日期: 2022-10-31
- 发布日期: 2021-08-27

Genetic diversity and genetic structure of a rare and endangered species Semiliquidambar cathayensis Hung T. Chang

1. College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
2. Fujian Research Institute of Forestry, Fuzhou 350012, China

Funds:

This work was supported by grants from the Third Round of Seed Industry Innovation and Industrialization Project in Fujian Province (ZYCX-LY-2017002) and Key Research and Development Project of Ningxia Autonomous Region (KJA19H01A).

摘要

摘要: 利用15对EST-SSR引物对半枫荷（Semiliquidambar cathayensis Hung T.Chang）的遗传多样性与遗传结构进行分析。结果显示，半枫荷的遗传多样性水平较高（H_e=0.816），遗传变异主要存在于居群内（76.63%），但不同地区间遗传分化系数较高（F_st=0.176）。半枫荷的17个居群可划分为6个基因库，同时本研究发现半枫荷遗传背景复杂，基因杂合性高。半枫荷居群遗传结构不稳定，有4个居群（40%）经历瓶颈效应。研究结果表明半枫荷维持较丰富的遗传变异，具有较高的进化潜力。繁育系统、生境破碎化和人为干扰可能是造成半枫荷濒危的主要原因，是其现代地理分布格局和居群遗传结构的主要成因。
- 半枫荷 /
- 濒危植物 /
- 遗传多样性 /
- EST-SSR分子标记 /
- 遗传结构
Abstract: Genetic diversity and genetic structure of Semiliquidambar cathayensis Hung T. Chang were analyzed using 15 EST-SSR primers. Results revealed that its genetic diversity was high (H_e=0.816), and that genetic variation mainly existed within populations (76.63%), although the genetic differentiation coefficient among different regions was slightly high (F_st=0.176). The 17 populations could be divided into seven gene banks. We found that the genetic background was complex and the gene heterozygosity was high. However, the genetic structure of the populations were unstable, and four populations (40%) experienced bottleneck events. We showed that S. cathayensis maintained relatively rich genetic variation and had high evolutionary potential. Habitat fragmentation and its endangerment caused by breeding system and human disturbance might be the main causes for the formation of the current geographical distribution pattern and population genetic structure.
- Semiliquidambar cathayensis /
- Endangered plants /
- Genetic diversity /
- EST-SSR molecular markers /
- Genetic structure

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