湖北农业科学2026，Vol.65Issue(7)：23-27,5.DOI:10.14088/j.cnki.issn0439-8114.2026.07.005
襄阳市农业科学院育成小麦品种遗传多样性分析
Genetic diversity analysis of wheat varieties bred by Xiangyang Academy of Agricultural Sciences
摘要
Abstract
In order to identify the genetic diversity of wheat varieties bred by Xiangyang Academy of Agricultural Sciences and to guide parent selection,a genome-wide scan was conducted on 28 wheat varieties using the 100k SNP chip to analyze their genetic di-versity.The results showed that the number of polymorphic mSNP loci was the highest on chromosome 2A(10 982)and the lowest on chromosome 4D(1 469).The distribution of polymorphic loci was relatively uniform on homologous chromosome groups,with the most on chromosome B and the least on chromosome D.The polymorphic information content(PIC)ranged from 0.096 to 0.375,with an av-erage of 0.262.The genetic distances between the test materials ranged from 0.002 38 to 0.421 68,with an average of 0.305 84,and were mainly concentrated between 0.25 and 0.40,accounting for 70.63％of the total.Xiangmai 93 and Xiangmai 21 shared the closest genetic distance(0.002 38),while the maximum genetic distance(0.421 68)was observed between Xiangmai 1816 and Xiangmai 93.The 28 varieties were divided into three groups based on cluster analysis,with some varieties in the same cluster having relatively close genetic distances.Overall,the genetic diversity of the selected varieties was low,and their genetic backgrounds were similar.Therefore,it was necessary to strengthen the introduction of superior exogenous genes during variety selection.关键词
小麦(Triticum aestivumL.)/育成品种/遗传多样性/襄阳市农业科学院Key words
wheat(Triticum aestivumL.)/bred varieties/genetic diversity/Xiangyang Academy of Agricultural Sciences分类
农业科技引用本文复制引用
孙华卫,汤三明,凌冬,张道荣,汤清益,周芳菊,唐清,刘先斌,王志顺,王鑫..襄阳市农业科学院育成小麦品种遗传多样性分析[J].湖北农业科学,2026,65(7):23-27,5.基金项目
襄阳市科技计划项目(2023) （2023）
湖北省农业科技创新中心创新团队项目(2024-620-000-001-04) （2024-620-000-001-04）
国家小麦产业技术体系项目(CARS-3-81) （CARS-3-81）
湖北省支持种业高质量发展资金项目(HBZY2023B002-1) （HBZY2023B002-1）
