河南农业科学 ›› 2020, Vol. 49 ›› Issue (3): 101-106.DOI: 10.15933/j.cnki.1004-3268.2020.03.013

• 植物保护 • 上一篇    下一篇

玉米种子内部拟轮枝镰孢菌抗性的QTL定位

马培培,周子键,赫可伟,宋云霞,吴建宇   

  1. (河南农业大学 农学院,河南 郑州 450002)
  • 收稿日期:2019-05-29 出版日期:2020-03-15 发布日期:2020-03-15
  • 通讯作者: 吴建宇(1964-),男,河南淮阳人,教授,主要从事玉米抗病遗传育种研究。E-mail:wujianyu40@126.com
  • 作者简介:马培培(1987-),女,河南周口人,在读硕士研究生,研究方向:作物抗病遗传。E-mail:2624634227@qq.com
  • 基金资助:
    国家自然科学基金项目(31761143009)

QTL Mapping of Seed Internal Fusarium verticillioides Resistance in Maize

MA Peipei,ZHOU Zijian,HE Kewei,SONG Yunxia,WU Jianyu   

  1. (Agronomy College,Henan Agricultural University,Zhengzhou 450002,China)
  • Received:2019-05-29 Published:2020-03-15 Online:2020-03-15

摘要: 为探究玉米种子内部对拟轮枝镰孢菌的抗性,利用由抗病自交系BT-1与感病自交系N6构建的RIL群体为材料,进行4个环境的联合QTL分析。结果表明,6个控制种子内部对拟轮枝镰孢菌抗性的QTL分布在第1、3、4、9、10染色体上,表型贡献率介于1.32%~7.62%。其中,表型贡献率最高的QTL qSIR3-1位于第3染色体,解释7.62%的表型贡献率,抗病效应来自于抗病亲本BT-1。6个QTL中的1个与已知种子外部抗性QTL一致,表明玉米种子内部对拟轮枝镰孢菌的抗性是独立的性状。

关键词: 玉米, 拟轮枝镰孢菌, 种子内部抗性, QTL, 表型贡献率

Abstract: In order to explore the seed internal resistance of maize to Fusarium verticillioides, RIL populations constructed from disease resistant inbred line BT-1 and susceptible inbred line N6 were used and phenotypes were surveyed in four environments to identify resistance QTLs.The results showed that 6 QTLs were located on chromosomes 1,3,4,9 and 10,with phenotypic contribution rate from 1.32% to 7.62%.The resistance QTL qSIR3-1 derived from BT-1 with the greatest contribution rate was located on chromosome 3, which could explain 7.62% of phenotypic variance.One of six identified QTLs was consistent with seed external resistance,showing that the internal resistance of seeds to F.verticillioides differed from other tissue resistance with some conservative mechanism.

Key words: Maize, Fusarium verticillioides, Seed internal resistance, QTL, Phenotypic contribution rate

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