湖北农业科学 ›› 2024, Vol. 63 ›› Issue (5): 207-214.doi: 10.14088/j.cnki.issn0439-8114.2024.05.036

• 生物工程 • 上一篇    下一篇

基于SSR荧光标记的121份野生枸杞种质遗传结构解析

戴国礼, 刘娜, 秦垦, 张波, 尹跃, 米佳, 何昕孺   

  1. 宁夏农林科学院枸杞科学研究所,银川 740002
  • 收稿日期:2023-05-22 出版日期:2024-05-25 发布日期:2024-06-04
  • 通讯作者: 何昕孺(1988-),女,宁夏盐池人,助理研究员,主要从事枸杞育种与栽培研究,(电子信箱)hhexinru@163.com。
  • 作者简介:戴国礼(1984-),男,青海格尔木人,副研究员,主要从事林木遗传育种研究,(电话)13995203004(电子信箱)dgl2006swfc@163.com;
  • 基金资助:
    国家自然科学基金项目(32060360); 宁夏重点研发计划项目(2020BBF02006; 2021BEF02005)

Genetic structure analysis of 121 wild goji berry germplasms based on SSR fluorescence markers

DAI Guo-li, LIU Na, QIN Ken, ZHANG Bo, YIN Yue, MI Ja, HE Xin-ru   

  1. Institute of Goji Berry Science, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 740002, China
  • Received:2023-05-22 Published:2024-05-25 Online:2024-06-04

摘要: 以采集的121份野生枸杞(Lycium barbarum L.)种质为材料,用9对SSR引物进行扩增,采用GeneALEX、Power Marker软件进行多态性分析,利用NTSYS、STRUC-TURE软件进行遗传多样性分析、聚类分析和主成分分析。结果表明,9对SSR引物共检测到108个等位基因,等位基因数(Na)、有效等位基因数(Ne)、观测杂合度(Ho)、期望杂合度(He)、多态信息含量(PIC)、Shannon’s信息指数分别为12个、4.620个、0.678、0.651、0.629、1.568;聚类结果显示121份野生枸杞种质可划分为5个亚群,群体遗传结构表明当K=5时,121个种质划分为5个亚群,来自宁夏的NXGY-02、NXGY-03 2个种质与来自内蒙古的6个种质之间的遗传距离最远,亲缘关系较远,来自青海省、新疆、甘肃省及内蒙古的其余野生枸杞种质之间存在广泛的基因交流现象;宁夏、内蒙古的野生枸杞种质具有独立起源进化的可能,而新疆、甘肃省、青海省的种质与宁夏种质亲缘关系较近,很可能属于同一起源。

关键词: 野生枸杞(Lycium barbarum L.), 种质, SSR荧光标记, 遗传结构

Abstract: 121 wild goji berry(Lycium barbarum L.) germplasms were collected as materials, 9 pairs of SSR primers were used of amplification, and polymorphism was analyzed using GeneALEX and Power Marker software. Genetic diversity analysis, cluster analysis, and principal component analysis were performed using NTSYS and STRUC-TURE software.The results showed that a total of 108 alleles were detected using 9 pairs of SSR primers. The number of alleles (Na), effective alleles (Ne), observed heterozygosity (Ho), expected heterozygosity (He), polymorphic information content (PIC), and Shannon’s information index were 12, 4.620, 0.678, 0.651, 0.629, and 1.568, respectively;the clustering results showed that 121 wild goji berry germplasms could be divided into 5 subgroups. The genetic structure of the population showed that when K=5, 121 germplasms could be divided into 5 subgroups. The genetic distance between NXGY-02 and NXGY-03 germplasms from Ningxia and 6 germplasms from Inner Mongolia was the farthest, and the genetic relationship was relatively distant,there was extensive gene exchange among other wild goji berry germplasms from Qinghai Province, Xinjiang, Gansu Province, and Inner Mongolia;the wild goji berry germplasms in Ningxia and Inner Mongolia had the possibility of independent origin and evolution, while the germplasms in Xinjiang, Gansu, and Qinghai provinces were closely related to the germplasms in Ningxia and were likely to belong to the same origin.

Key words: wild goji berrie (Lycium barbarum L.), germplasms, SSR fluorescence markers, genetic structure

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