中国水稻科学2025，Vol.39Issue(6)：731-743,13.DOI:10.16819/j.1001-7216.2025.241120
水稻开花习性及其在粳型三系不育系选育中的应用
Flowering Habits of Rice and Its Application in Breeding japonica Cytoplasmic Male Sterile Lines
摘要
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.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Key words
indica-japonica hybrid rice/japonica CMS line/stigma exsertion/flowering time/glume opening characteristics/seed production yield引用本文复制引用
陈玲,林文英,梁丽梅,欧阳由男,叶胜海,季芝娟..水稻开花习性及其在粳型三系不育系选育中的应用[J].中国水稻科学,2025,39(6):731-743,13.基金项目
浙江省"尖兵""领雁"研发攻关计划资源项目(2023C04024) （2023C04024）
海南省重点研发项目(ZDYF2023XDNY086) （ZDYF2023XDNY086）
三亚中国农业科学院国家南繁研究院"南繁专项"(YDLH2302). （YDLH2302）
