福建林业科技2025，Vol.52Issue(2)：6-14,9.DOI:10.13428/j.cnki.fjlk.2025.02.002
基于SSR标记的柴达木盆地梭梭野生群体遗传多样性分析
Analysis of the Genetic Diversity of Wild Populations of Haloxylon ammodendron in the Qaidam Basin Based on SSR Markers
摘要
Abstract
To uncover the genetic diversity and genetic structure of Haloxylon ammodendron resources in Qinghai Province and fur-nish a theoretical underpinning for the development and conservation of this species,this research sampled 132 specimens from Haloxylon ammodendron populations across three representative habitats within the principal distribution zones of the plant in Qing-hai.Employing 10 SSR markers,an in-depth analysis of their genetic diversity and genetic structure was conducted.The findings revealed that,on average,the number of alleles,effective number of alleles,and Shannon's information index for the three populations were 3,1.764 and 0.639 correspondingly.This suggested a moderate degree of genetic diversity within Haloxylon ammodendron.Notably,variations in genetic diversity were observed among the three populations,with the DLH population exhibiting the highest level and the DL population the lowest.A significant 93%of the genetic variation was found to occur within the populations,high-lighting that internal variation constituted the primary source of genetic diversity.Moreover,the gene flow among the populations was calculated to be 7.344,implying that the relatively robust gene flow exerted a certain restraining influence on genetic differentiation among them.The outcomes of clustering and population genetic structure analysis demonstrated that the 132 tested materials could be segregated into two subgroups,which displayed a certain correlation with their geographical distribution.In summary,this study has preliminarily acquired the horizontal genetic diversity information of Haloxyon ammodendron populations,laying a solid founda-tion for the screening,exploration,and utilization of outstanding Haloxylon ammodendron resources.关键词
梭梭/SSR标记/遗传多样性Key words
Haloxylon ammodendron/SSR markers/genetic diversity分类
农业科技引用本文复制引用
尕藏东智,李强峰,李巍,朋毛当智,吕嘉..基于SSR标记的柴达木盆地梭梭野生群体遗传多样性分析[J].福建林业科技,2025,52(2):6-14,9.基金项目
青海柴达木梭梭林国家级自然保护区2023年第一批、第四批中央林业草原生态保护恢复资金国家级自然保护区补助项目(青财资环字[2023]782号) （青财资环字[2023]782号）
青海省"昆仑英才·科技领军人才"培养项目(青人才字[2022]1号) （青人才字[2022]1号）
