China Rice ›› 2026, Vol. 32 ›› Issue (2): 23-29.DOI: 10.3969/j.issn.1006-8082.2026.02.005

• Special Thesis & Basic Research • Previous Articles     Next Articles

Research Progress on Outcrossing Characteristics of Parental Lines in Hybrid Rice

YAO Jianjian1,2, LIU Bohan3, HE Jiwai3, ZHUANG Wen2, PAN Sujun3, WU Jun1,2,3,*()   

  1. 1Longping Branch, College of Biology, Hunan University, Changsha 410082, China
    2National Key Laboratory of Hybrid Rice/Hunan Hybrid Rice Research Center, Changsha 410125, China
    3Hunan Agricultural University, Changsha 410128, China
  • Received:2025-09-13 Online:2026-03-20 Published:2026-03-11

杂交水稻亲本异交特性研究进展

姚鉴兼1,2, 刘伯涵3, 贺记外3, 庄文2, 潘素君3, 吴俊1,2,3,*()   

  1. 1湖南大学 生物学院 隆平分院,长沙 410082
    2杂交水稻全国重点实验室/湖南杂交水稻研究中心,长沙 410125
    3湖南农业大学,长沙 410128
  • 基金资助:
    国家自然科学基金区域创新发展联合基金项目(U20A2021);湖南省重点研发计划项目(2023NK2003)

Abstract:

Hybrid rice has made significant contributions to grain production due to its remarkable yield advantage. However, its development has been constrained in recent years by the relatively high cost of seeds. To reduce seed costs, it is necessary to increase seed production yield. The outcrossing ability of male sterile lines and restorer lines in hybrid rice directly affects the seed production yield. This paper summarizes the research progress on the outcrossing characteristics of hybrid rice parents, focusing on the synchronization of flowering time and duration, plant traits of male sterile lines, stigma characteristics and vitality, as well as the in vitro viability and quantity of pollen from restorer lines. It also discusses the impact of weather conditions on flowering periods and outcrossing seed setting. Finally, some strategies are proposed to enhance seed production efficiency, aiming to achieve high-yield seed production in hybrid rice and promote cost reduction and efficiency enhancement in hybrid rice seed production.

Key words: hybrid rice, outcrossing pollination characteristics, male sterile line, seed setting potential, seed production efficiency

摘要:

杂交水稻因其产量优势显著为粮食生产做出了重要贡献,然而近年来因种子成本偏高,其发展受到限制。降低种子成本需提高制种产量。杂交水稻雄性不育系和恢复系的异交能力直接影响制种产量。本文总结了杂交水稻亲本异交特性的研究进展,重点介绍了花时和花期相遇、雄性不育系植株性状、柱头特性和活力,以及恢复系花粉离体活性和花粉量,还讨论了天气对花期和异交结实的影响。最后,提出了提高制种效率的对策,以期实现杂交水稻高产制种,促进杂交水稻制种降本增效。

关键词: 杂交水稻, 异交授粉性能, 雄性不育系, 结实潜力, 制种效率

CLC Number: