广西林业科学2024，Vol.53Issue(6)：694-701,8.DOI:10.19692/j.issn.1006-1126.20240601
江西苦楝群体遗传多样性研究
Research on Genetic Diversities of Melia azedarach Populations in Jiangxi
摘要
Abstract
In order to reveal genetic variation patterns of Melia azedarach populations,and provide reference for protection and utilization of M.azedarach in Jiangxi,15 SSR primers were used to analyze genetic diversi-ties of 10 M.azedarach populations.Cluster analysis and principal component analysis were used to explore ge-netic relationships and structures of M.azedarach populations.Results showed that a total of 111 alleles were detected.Average number of alleles and effective number of alleles were 4.133 and 2.558 respectively.Average Shannon's information index was 0.968.Average observed heterozygosity and expected heterozygosity were 0.419 and 0.512 respectively.Average polymorphic information content was 0.534.M.azedarach populations had moderate genetic diversity.Yichun population had the highest genetic diversity and Jiujiang population had the lowest genetic diversity.M.azedarach populations had moderate genetic differentiation.Molecular analysis of variance indicated that genetic variation mainly occurred within populations.UPGMA cluster analysis and principal component analysis showed that there were certain geographic structure characteristics among popula-tions.Anyuan and Xinfeng populations belonged to a group,and other populations belonged to a group.M.aze-darach populations in Jiangxi had moderate genetic diversities,moderate genetic differentiation and higher gene flows.Genetic diversity basically decreased from southwest to northeast.关键词
群体/SSR标记/遗传多样性/苦楝Key words
population/SSR marker/genetic diversity/Melia azedarach分类
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万欣怡,徐梦阳,叶学敏,仲小茹,叶雄英,吴南生,孙荣喜..江西苦楝群体遗传多样性研究[J].广西林业科学,2024,53(6):694-701,8.基金项目
国家自然科学基金项目(32160387) （32160387）
