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中国农学通报 ›› 2026, Vol. 42 ›› Issue (19): 67-74.doi: 10.11924/j.issn.1000-6850.casb2025-0815

• 生物科学 • 上一篇    下一篇

国内外小麦种质的SCoT及ISSR分析

王二伟1(), 王健胜2(), 马爱锄1, 张晓茹2, 黄雅敏1, 程国强3, 肖婉露1, 高产1   

  1. 1 平顶山市农业科学院, 河南平顶山 467001
    2 平顶山学院, 河南平顶山 467000
    3 平顶山市农业农村局, 河南平顶山 467000
  • 收稿日期:2025-09-28 修回日期:2026-01-11 出版日期:2026-10-15 发布日期:2026-10-15
  • 通讯作者:
    王健胜,男,1978年出生,陕西礼泉人,教授,博士,主要从事作物遗传育种研究。通信地址:467000 河南省平顶山市未来路南段 平顶山学院化学与环境工程学院,E-mail:。
  • 作者简介:

    王二伟,男,1981年出生,河南郏县人,副研究员,学士,主要从事小麦育种研究。通信地址:467000 河南省平顶山市湛河区农科路5号 平顶山市农业科学院,E-mail:。

Genetic Diversity Analysis with SCoT and ISSR Marker of Wheat Germplasm at Home and Abroad

WANG Erwei1(), WANG Jiansheng2(), MA Aichu1, ZHANG Xiaoru2, HUANG Yamin1, CHENG Guoqiang3, XIAO Wanlu1, GAO Chan1   

  1. 1 Pingdingshan Academy of Agricultural Science, Pingdingshan, Henan 467001
    2 Pingdingshan University, Pingdingshan, Henan 467000
    3 Pingdingshan Agriculture and Rural Bureau, Pingdingshan, Henan 467000
  • Received:2025-09-28 Revised:2026-01-11 Published:2026-10-15 Online:2026-10-15

摘要:

分析引进的国内外小麦种质资源的DNA水平多样性,揭示不同小麦种质间的亲缘关系,以期为小麦遗传改良提供丰富材料。以引进的48份国内外小麦种质为材料,综合利用SCoT及ISSR 2种分子标记技术对供试材料进行分子检测,并基于此对其进行聚类分析和主成分分析。结果显示,SCoT引物和ISSR引物平均扩增条带数均为3.50条,其有效等位基因数平均值分别为1.66和1.69,SCoT引物和ISSR引物的Shannon’s信息指数和Nei’s基因多样性指数均值分别为0.57和0.39。小麦种质间遗传相似系数介于0.1703~0.9849之间,平均遗传相似系数为0.5580,这表明供试小麦种质遗传多样性较丰富。基于Nei’s遗传相似系数,48份小麦种质被划分为5个群类,主成分分析结果与聚类分析结果基本一致。研究认为,供试小麦种质间存在较丰富的遗传多样性,基于种质间的Nei’s遗传相似系数,48份小麦种质可被划分为5个类群。

关键词: 小麦种质, 聚类分析, 主成分分析, SCoT, ISSR

Abstract:

The study aims to analyze the diversity of DNA level of introduced wheat germplasm resources from home and abroad and reveal the genetic relationship between different wheat germplasms, and further provide abundant materials for wheat genetic improvement. The cluster analysis and principal component analysis were conducted for 48 wheat germplasms using SCoT and ISSR molecular markers. The mean number of band amplified by a single primer for SCoT marker or ISSR marker was 3.50. The mean number of effective alleles of SCoT primers and ISSR primers were 1.66 and 1.69, respectively. On the Shannon’s information index and Nei’s gene diversity index, the values of SCoT primer and ISSR primer were 0.57 and 0.39 respectively. The genetic similarity coefficient between wheat germplasm varied from 0.1703 to 0.9849 with an average value of 0.5580, which indicated that the genetic diversity of the tested wheat germplasms was rich. Based on Nei’s genetic similarity coefficient, 48 wheat germplasms could be divided into five groups. The results of principal component analysis were basically consistent with those of cluster analysis. There is the abundant genetic diversity among wheat germplasm. According to Nei’s genetic similarity coefficient between wheat germplasm, 48 wheat germplasm could be divided into five groups.

Key words: wheat germplasm, cluster analysis, principal component analysis, SCoT, ISSR

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