浙江农业学报 ›› 2025, Vol. 37 ›› Issue (3): 530-537.DOI: 10.3969/j.issn.1004-1524.20240217

• 作物科学 • 上一篇    下一篇

利用染色体片段替换系鉴定水稻二化螟抗性QTL

雷志伟1,2(), 李新欣2,3, 徐恒2, 张恒2, 朱英2, 张华2,*()   

  1. 1.浙江农林大学 现代农学院,浙江 杭州 311300
    2.浙江省农业科学院 病毒学与生物技术研究所,农产品质量安全全国重点实验室,浙江省作物分子育种工程技术研究中心,浙江 杭州 310021
    3.浙江师范大学 化学与生命科学学院,浙江 金华 321004
  • 收稿日期:2024-03-08 出版日期:2025-03-25 发布日期:2025-04-02
  • 作者简介:雷志伟(1995—),男,山西朔州人,硕士研究生,主要从事水稻抗虫基因功能研究。E-mail:1364641389@qq.com
  • 通讯作者: * 张华,E-mail:zhanghua2011@whu.edu.cn
  • 基金资助:
    国家重点研发计划(2023YFD1200901)

Identification of QTLs for stem borer resistance using chromosome segment substitution lines in rice

LEI Zhiwei1,2(), LI Xinxin2,3, XU Heng2, ZHANG Heng2, ZHU Ying2, ZHANG Hua2,*()   

  1. 1. College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China
    2. State Key Laboratory for Quality and Safety of Agro-Products, Research Center for Crop Molecular Breeding at Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    3. College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
  • Received:2024-03-08 Online:2025-03-25 Published:2025-04-02

摘要:

螟虫灾害对我国水稻生产危害较重,而水稻二化螟抗性的遗传研究却较为匮乏,不利于抗螟虫水稻品种的培育。本研究利用一套以粳稻日本晴为供体、籼稻9311为受体的染色体片段替换系为材料,对水稻二化螟抗性性状进行遗传分析,在水稻基因组鉴定出5个与二化螟抗性相关的数量性状基因座(quantitative trait loci, QTL)。通过对QTL相关替换系的表型分析,发现4个来源于粳稻日本晴的QTL(qRSB1、qRSB3、qRSB4和qRSB6)可以显著提高籼稻9311对二化螟的抗性。同时,根据相关替换系的基因型鉴定结果,通过物理定位初步明确了各个QTL在水稻基因组中的候选区间。以上研究结果可以为这些QTL的下一步精细定位和候选基因的分离打下研究基础,也可以为二化螟抗性水稻品种的培育提供必要的鉴定方法和理论指导。

关键词: 水稻二化螟, 染色体片段替换系, QTL定位, 分子标记

Abstract:

The rice stem borer disaster causes serious damage to rice production in China. However, the genetic mechanisms of stem borer resistance in rice is still unknown, and the breeding of stem borer resistant rice variety faces big challenges. In this study, a set of chromosome segment substitution lines with japonica rice ‘Nipponbare’ as the donor and indica rice ‘9311’ as the recipient were used as materials to conduct a genetic analysis of the traits related to resistance to the rice stem borer. Five quantitative trait loci (QTL) related to resistance to the rice stem borer were identified in the rice genome. Through phenotypic analysis of the relevant substitution lines, it was found that four QTLs derived from japonica rice ‘Nipponbare’ (qRSB1, qRSB3, qRSB4, and qRSB6) could significantly enhance the resistance of indica rice ‘9311’ to the rice stem borer. Meanwhile, based on the genotypic identification results of the relevant substitution lines, the candidate intervals of each QTL in the rice genome were initially determined through physical mapping. The above research results provide a basis for the further fine mapping and candidate gene isolation of these stem borer resistance QTLs and would be beneficial to the breeding of stem borer resistant rice varieties in future.

Key words: rice stem borer, chromosome segment substitution line, QTL mapping, molecular marker

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