浙江农业学报 ›› 2026, Vol. 38 ›› Issue (1): 24-34.DOI: 10.3969/j.issn.1004-1524.20250087

• 作物科学 • 上一篇    下一篇

基于SSR标记的浙江省地方玉米种质遗传关系分析

何苏悦1(), 李燕2, 丁云倩1, 李欣泽1, 韩庆辉1, 陈小央2,*()   

  1. 1.浙江农林大学 现代农学院,浙江 杭州 311300
    2.浙江省种子管理总站,浙江 杭州 310020
  • 收稿日期:2025-02-05 出版日期:2026-01-25 发布日期:2026-02-11
  • 作者简介:陈小央,E-mail: caroline1201@163.com
    何苏悦,研究方向为玉米遗传育种。E-mail:2758494789@qq.com
  • 通讯作者: 陈小央
  • 基金资助:
    浙江省玉米种质资源精准鉴定项目(2022-2024);浙江省旱粮新品种选育重大科技专项(2021C02064-4-3);国家自然科学基金(32301833);浙江省自然科学基金(LTGN24C130001)

Phylogenetic analysis of maize landraces in Zhejiang Province of China based on SSR markers

HE Suyue1(), LI Yan2, DING Yunqian1, LI Xinze1, HAN Qinghui1, CHEN Xiaoyang2,*()   

  1. 1. College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
    2. Zhejiang Provincial Seed Management Station, Hangzhou 310020, China
  • Received:2025-02-05 Online:2026-01-25 Published:2026-02-11
  • Contact: CHEN Xiaoyang

摘要:

为探究浙江省地方玉米种质的遗传基础与亲缘关系,本研究利用40对简单重复序列(simple sequence repeat, SSR)标记对来自浙江省的259份地方玉米种质进行了遗传多样性分析。 结果表明,40对SSR标记引物共检测出399个等位变异,每对引物检测到的等位基因变异数为4~22个,平均为9.975个;有效等位基因数范围为0.818 5~1.000 0,平均为0.982 2;基因多样性指数范围为0.303 6~0.903 3,平均为0.717 1;多态信息含量范围为0.289 0~0.895 4,平均为0.686 8;Shannon指数范围为0.655~2.527,平均值为1.615。通过UPGMA聚类分析,将259份地方玉米种质划分为3个类群,第Ⅰ类群包含72份种质,占27.8%;第Ⅱ类群包含72份种质,占27.8%;第Ⅲ类群包含115份种质,占44.4%。主坐标分析表明,类群内个体距离较近,类群间距离大且无重叠,进一步证实聚类分析结果的可靠性。综上所述,浙江省地方玉米种质在育种实践过程中形成了相对独立的优势类群,遗传多样性丰富,可为玉米优异基因挖掘、优异种质创制和新品种培育奠定基础。

关键词: 玉米, 简单重复序列(SSR)标记, 聚类分析, 主坐标分析, 遗传关系, 地方种质

Abstract:

To investigate the genetic basis and phylogenetic relationships of maize landraces in Zhejiang Province, this study utilized 40 pairs of simple sequence repeat(SSR) primers to conduct genetic diversity analysis on 259 maize landraces from Zhejiang. The results showed that a total of 399 allele variations were detected by the 40 pairs of SSR markers, with the number of alleles detected per primer ranging from 4 to 22, with an average of 9.975. The effective allele number ranged from 0.818 5 to 1.000 0, with an average of 0.982 2. The gene diversity index ranged from 0.303 6 to 0.903 3, with an average of 0.717 1. The marker polymorphism information content ranged from 0.289 0 to 0.895 4, with an average of 0.686 8. The Shannon index ranged from 0.655 to 2.527, with an average of 1.615. UPGMA clustering analysis classified the 259 maize landraces into three groups. Group I consisted of 72 germplasm, accounting for 27.8%; Group Ⅱ consisted of 72 germplasm, also accounting for 27.8%; Group Ⅲ consisted of 115 germplasm, accounting for 44.4%. Principal component analysis revealed that individuals within each group were closely related, while there was a large distance between groups with no overlap, further confirming the reliability of the clustering analysis. The findings indicated that during the breeding process, maize landraces in Zhejiang Province have formed relatively independent and dominant groups, with rich genetic diversity, which laid a foundation for the exploration of superior genes, creation of excellent germplasm, and the development of new varieties.

Key words: maize, simple sequence repeat(SSR) marker, cluster analysis, principal coordinate analysis, genetic relationship, landrace

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