Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2026, Vol. 42 ›› Issue (19): 67-74.doi: 10.11924/j.issn.1000-6850.casb2025-0815

Special Issue: 生物技术; 小麦

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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 Online:2026-10-15 Published:2026-10-15

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

CLC Number: