作物杂志Issue(1)：9-14,6.DOI:10.16035/j.issn.1001-7283.2026.01.002
水稻光温敏不育系19XS的选育及其特性分析
Development and Characterization of Photo-Thermo-Sensitive Genic Male Sterile Rice Line 19XS
摘要
Abstract
Photo-thermo-sensitive genic male sterile(P/TGMS)lines are precious resources for hybrid rice breeding.Using the newly discovered rice P/TGMS line 19XS as material,its breeding process,agronomic traits,fertility conversion characteristics,hybrid progeny fertility,and genotype were analyzed.The results showed that in Wuhan area(sown in early May),19XS maintained a stable sterile state for more than 45 days from heading in early August to late September;a small amount of fertility conversion began to occur after October 3.In Hainan area(sown in late November,heading in early March),19XS generally appeared fertile,exhibiting photo-thermo-sensitive fertility conversion characteristics.Genetic analysis indicated that 19XS is a new recessive genic male sterile line,and its sterility is not interfered with by the genetic background.The hybrid progeny of 19XS and Xiang 78S(19XS/Xiang 78S)exhibited excellent agronomic traits,including compact plant type,large panicles with numerous grains,and high seed setting rate.Gene chip detection results showed that both 19XS and 19XS/Xiang 78S contain the thermo-sensitive male sterile gene TMS5.These findings provide a new material basis for hybrid rice breeding.关键词
水稻/光温敏不育系/19XS/育性转换/基因型分析Key words
Rice/Photo-thermo-sensitive genic male sterile line/19XS/Fertility conversion/Genotype analysis引用本文复制引用
闸雯俊,游艾青,李行润,周发松,冯芳,吴边,陈俊孝,石少阶,周雷,王静..水稻光温敏不育系19XS的选育及其特性分析[J].作物杂志,2026,(1):9-14,6.基金项目
湖北省重点研发计划项目(2023BBB031) （2023BBB031）
湖北省科技重大专项(2022ABA001) （2022ABA001）
