热带亚热带植物学报2025，Vol.33Issue(1)：25-32,8.DOI:10.11926/jtsb.4857
广西极小种群野生喙核桃遗传多样性分析
Genetic Diversity Analysis of Annamocarya sinensis,a Wild Plant with Extremely Small Populations in Guangxi
摘要
Abstract
Annamocarya sinensis is a national Class Ⅱ key protected wild plant with extremely small populations.To elucidate the genetic diversity and variation of wild A.sinensis population in Guangxi can provide guidance for the development of genetic diversity conservation and management strategies.The genetic diversity and genetic variation of 4 wild populations(47 individuals)in Guangxi were analyzed by using 6 pairs of SSR primers with good stability and polymorphism.The results showed that the average number of observed alleles was 2.125,the average number of effective alleles was 1.581,the average Shannon information index was 0.477,the average observed heterozygosity was 0.310,the average expected heterozygosity was 0.286,and the average allele richness was 1.677.The level of genetic diversity of A.sinensis in Guangxi was low.There was a moderate genetic differentiation among populations(0.120),accounting for 20%among populations and 80%within population.Structure and UPGMA analysis showed that the 47 samples could be divided into three categories,which were mixed with each other and had rich genetic background.The genetic diversity of Yongfu County population in Guilin City was the highest(He=0.339,I=0.598),which should be regarded as the key conservation unit.关键词
喙核桃/濒危植物/SSR标记/遗传多样性/遗传变异Key words
Annamocarya sinensis/Endangered species/SSR marker/Genetic diversity/Genetic variation引用本文复制引用
邓丽丽,邹蓉,杨一山,蒋运生,韦霄,史艳财..广西极小种群野生喙核桃遗传多样性分析[J].热带亚热带植物学报,2025,33(1):25-32,8.基金项目
国家重点研发计划(2022YFF1300703) （2022YFF1300703）
广西科学院"广西特色植物资源保育及利用"创新团队启动经费项目(CQZ-C-1902) （CQZ-C-1902）
中国科学院"西部之光"计划(2022) （2022）
广西林业科技推广示范项目([2022]GT23)资助This work was supported by the National Key Research and Development Plan(Grant No.2022YFF1300703),Guangxi Academy of Sciences"Conservation and Utilization of Characteristic Plant Resources in Guangxi"Innovation Team Launched a Funding Project(Grant No.CQZ-C-1902),Chinese Academy of Sciences"Light of the West"Program(Grant No.2022),and Guangxi Forestry Science and Technology Promotion Demonstration Project(Grant No.[2022]GT23). （[2022]GT23）
