作物杂志Issue(1)：46-53,8.DOI:10.16035/j.issn.1001-7283.2025.01.006
特早熟杂交早稻选育策略及其基因渗入分析
Breeding Strategy and Introgression Analysis on a Ultra-Early-Maturing Hybrid Rice
摘要
Abstract
This article proposes a new strategy,using local early rice varieties(parents)hybridized with japonicaintrogression lines,and has created ultra-early-maturing and high-yielding hybrid early rice(HER).This is the first report in HER for utilizing the heterosis genus between indica and japonica subspecies.Using Xiangling 628S(XL628S)and Zhongzao39 as improved parents,hybridized with the japonica rice introgression materials,two lines of male sterile line Z01S and restorer line R1102 were bred through systematic breeding methods.The results showed that,Z01S and R1102 exhibited early heading and strong temperature sensitivity under long day and short day conditions.In addition,the new combination CZY1102(Z01S/R1102)showed strong tillering ability,high yield,excellent rice quality,good cold-tolerance,and early heading.Compared with Zhongzao39,its period of heading date was as short as 47-73 days,which was 6.40 days shorter in spring and 11.30 days shorter in autumn.The actual yield during the main season was 8187.60 kg/ha,which were not significantly reduced compared to Zhongzao39.The proportion of japonica genotypes in Z01S and R1102 were increased by 0.78%and 6.34%,respectively,compared to their original parents.This indicates that the breeding strategy is feasible,and the japonica introgression can effectively overcome physiological barriers among subspecies.关键词
杂交早稻/早抽穗/粳型渐渗/亚种/选育Key words
Early hybrid rice/Early heading/Japonica introgression/Subspecies/Breeding引用本文复制引用
雷享亮,曾晓春,方军,袁晓泉,李丹,刘诗杰,詹婧昀,黄志华,彭金剑,江绍玫..特早熟杂交早稻选育策略及其基因渗入分析[J].作物杂志,2025,(1):46-53,8.基金项目
国家水稻产业技术体系项目(CARS-01-69) （CARS-01-69）
江西省重大科技研发专项(20232ACF011001) （20232ACF011001）
江西省水稻产业技术体系项目(JXARS-02-08) （JXARS-02-08）
抚州市科技局青年领军人才项目 （）
