中国水稻科学 ›› 2026, Vol. 40 ›› Issue (6): 774-785.DOI: 10.16819/j.1001-7216.2026.260412

• 研究报告 • 上一篇    下一篇

基于高密度基因芯片的上海杂交粳稻亲本基因型鉴定与育种利用

牛付安, 储黄伟, 张安鹏, 周继华, 孙滨, 代雨婷, 谢开珍, 石凤珍, 尹子辉, 侯聪, 王奕, 李璟, 程灿*(), 曹黎明*()   

  1. 上海市农业科学院 作物育种栽培研究所/农业农村部粮油作物种质创新与遗传改良重点实验室(部省共建), 上海 201403
  • 收稿日期:2026-04-29 修回日期:2026-07-04 出版日期:2026-11-10 发布日期:2026-11-09
  • 通讯作者: *email: caoliming@saas.sh.cn;
    chengcan@saas.sh.cn
  • 基金资助:
    上海市农业科技创新项目(2024-02-08-00-12-F00050);上海市科技创新行动计划农业领域项目(21N11900100)

Genotyping and Breeding Utilization of Parental Lines of japonica Hybrid Rice in Shanghai Based on High-Density SNP Chips

NIU Fuan, CHU Huangwei, ZHANG Anpeng, ZHOU Jihua, SUN Bin, DAI Yuting, XIE Kaizhen, SHI Fengzhen, YIN Zihui, HOU Cong, WANG Yi, LI Jing, CHENG Can*(), CAO Liming*()   

  1. Key Laboratory of Germplasm Innovation and Genetic Improvement of Grain and Oil Crops(Co-Constructed by Ministry and Province), Ministry of Agriculture and Rural Affairs, Crop Breeding and Cultivation Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
  • Received:2026-04-29 Revised:2026-07-04 Online:2026-11-10 Published:2026-11-09

摘要:

【目的】从基因组水平解析上海地区主要杂交粳稻亲本的遗传特性,为进一步开展杂交粳稻亲本分子改良和新组合测配提供理论依据与种质资源。【方法】利用高密度水稻全基因组SNP芯片对20个上海地区主要杂交粳稻亲本进行遗传背景分析、功能基因鉴定以及利用价值评价。【结果】杂交粳稻不育系粳型成分普遍高于恢复系,其中不育系申68A、申01A、申9A、申10A、申21A、申46A、申武1A、申长A和紫祥A粳型片段比例较高,属于典型粳稻类型。11个不育系和9个恢复系分别检测到控制产量、品质、抗生物和非生物逆境等重要性状功能基因19个和35个。上海地区主要杂交粳稻不育系抗病性好,申68A、申9A、申10A、申21A、申130A、申24A等多个不育系均含有广谱稻瘟病抗性基因组合“Pi2+Pita”。恢复系穗大粒多,含有较多的产量相关基因(OsSPL16、Gn1a和CYP704A3等),但聚合多个广谱抗稻瘟病主效抗性基因的品种较少,需加强恢复系稻瘟病抗性的分子改良。【结论】本研究明确了上海地区主要杂交粳稻亲本的遗传背景和携带的功能基因,为提高杂交粳稻新品种选育效率以及解决杂交粳稻育种的同质化问题奠定了良好基础。

关键词: 亲本, 杂交粳稻, 基因芯片, 育种, 遗传背景, 功能基因

Abstract:

【Objective】To elucidate the genetic characteristics of major parental lines of japonica hybrid rice in Shanghai at the genomic level, thereby providing a theoretical basis and germplasm resources for the molecular improvement of these parental lines and evaluation of new hybrid combinations.【Method】High-density rice whole-genome SNP chips were employed to analyze the genetic background, identify functional genes, and assess the breeding value of 20 major parental lines of japonica hybrid rice in Shanghai.【Result】The sterile lines of japonica hybrid rice generally exhibited a higher proportion of japonica components than the restorer lines. Among them, Shen 68A, Shen 01A, Shen 9A, Shen 10A, Shen 21A, Shen 46A, Shenwu 1A, Shenchang A, and Zixiang A showed a particularly high ratio of japonica genome segments and were classified as typical japonica types. A total of 19 and 35 functional genes controlling key traits such as yield, quality, and resistance to biotic and abiotic stresses were detected in the 11 sterile lines and 9 restorer lines, respectively. The major sterile lines of japonica hybrid rice in Shanghai exhibited favorable disease resistance. Several lines, including Shen 68A, Shen 9A, Shen 10A, Shen 21A, Shen 130A, and Shen 24A, carried the broad-spectrum blast resistance gene combination Pi2+Pita. The restorer lines featured large panicles and high spikelet numbers, harboring multiple yield-related genes (OsSPL16, Gn1a, CYP704A3, etc.). However, few restorer lines aggregated multiple major broad-spectrum blast resistance genes, indicating a need to strengthen molecular improvement for blast resistance in restorer lines.【Conclusion】This study clarifies the genetic backgrounds and functional gene profiles of major parental lines of japonica hybrid rice in Shanghai, laying a solid foundation for improving breeding efficiency and addressing genetic homogeneity in hybrid rice breeding.

Key words: parental lines, japonica hybrid rice, gene chip, breeding, genetic background, functional gene