中国水稻科学 ›› 2025, Vol. 39 ›› Issue (6): 731-743.DOI: 10.16819/j.1001-7216.2025.241120

• 综述与专论 • 上一篇    下一篇

水稻开花习性及其在粳型三系不育系选育中的应用

陈玲1,5, 林文英3, 梁丽梅4, 欧阳由男1, 叶胜海2,*(), 季芝娟1,5,*()   

  1. 1中国水稻研究所 稻作技术研究与发展中心/水稻生物育种全国重点实验室, 杭州 311401
    2浙江省农业科学院 作物与核技术利用研究所, 杭州 310021
    3松阳县农业技术推广中心, 浙江 丽水 323400
    4松阳县农业农村局浙江 丽水 323400
    5中国农业科学院 国家南繁研究院海南 三亚 572025
  • 收稿日期:2024-11-29 修回日期:2025-12-25 出版日期:2025-11-10 发布日期:2025-11-19
  • 通讯作者: * email:yesh@zaas.ac.cn;zhijuanji@126.com
  • 基金资助:
    浙江省“尖兵”“领雁”研发攻关计划资源项目(2023C04024);海南省重点研发项目(ZDYF2023XDNY086);三亚中国农业科学院国家南繁研究院“南繁专项”(YDLH2302)

Flowering Habits of Rice and Its Application in Breeding japonica Cytoplasmic Male Sterile Lines

CHEN Ling1,5, LIN Wenying3, LIANG Limei4, OUYANG Younan1, YE Shenghai2,*(), JI Zhijuan1,5,*()   

  1. 1Research and Development Center of Rice Cropping Technology/State Key Laboratory for Rice Biology and Breeding, China National Rice Research Institute, Hangzhou 311401, China
    2Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    3Songyang County Agricultural Technology Extension Center, Lishui 323400, China
    4Agricultural and Rural Bureau of Songyang County, Lishui 323400, China
    5National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya 572025, China
  • Received:2024-11-29 Revised:2025-12-25 Online:2025-11-10 Published:2025-11-19
  • Contact: * email:yesh@zaas.ac.cn;zhijuanji@126.com

摘要:

杂种优势的利用大幅提高了水稻的产量。籼粳亚种间亲缘关系较远,其杂种优势通常强于亚种内杂交,因而具备更大的产量潜力,是进一步提高水稻单产的重要途径。目前,籼粳杂交稻以粳型不育系与籼型恢复系组合为主。粳不籼恢三系杂交稻因长势清秀、株型理想、不早衰以及具备超高产优势,在生产上受到了广泛关注。然而,粳型三系不育系因柱头外露率低、开花时间偏晚等开花习性上的局限,在制种过程中存在父母本花时不遇、异交结实率低等瓶颈问题,导致制种产量不高、不稳,限制了籼粳杂交稻的进一步推广应用。本文从水稻开花习性的影响因素和遗传机制等方面综述了其在粳型三系不育系选育中的应用,可为促进籼粳亚种间杂交稻的培育、生产应用和杂交水稻的可持续发展提供参考。

关键词: 籼粳杂交稻, 粳型三系不育系, 柱头外露, 开花时间, 开颖特性, 制种产量

Abstract:

The utilization of heterosis has significantly increased the yield of rice. Hybridization between indica and japonica subspecies exhibits stronger heterosis due to their distant genetic relationships. Consequently, indica-japonica hybrid rice has greater yield potential. Inter-subspecies hybridization between indica and japonica is an important way to enhance rice yields. Currently, indica-japonica hybrid rice mainly refers to the combinations derived from crossing a japonica cytoplasmic male sterility (CMS) line with an indica restorer line. These combinations have received widespread attention in production because of their vigorous growth, ideal plant architecture, resistance to premature senescence, and super high yield advantages. However, the japonica CMS line is characterized by its flowering habits, such as low stigma exsertion rate and late flowering time. These habits lead to asynchronous flowering time between the indica and japonica parental lines and low outcrossing rates in the seed production process. Thus, the yield of seed production is low and unstable, which limits further application of indica-japonica hybrid rice. In this work, we review the influencing factors and genetic mechanisms of rice flowering habits. We also summarize and analyze the application research on these mechanisms in japonica CMS lines. This review provides a reference for promoting the breeding, production, and application of indica-japonica hybrid rice and the sustainable development of hybrid rice.

Key words: indica-japonica hybrid rice, japonica CMS line, stigma exsertion, flowering time, glume opening characteristics, seed production yield