分子标记辅助选择创制长粒香型抗病水稻光温敏核不育系  

Creation of Rice Photo-thermo-sensitive Genic Male Sterile Lines with Long Grain,Fragrance and Blast Resistance by Molecular Marker-assisted Selection

作　　者：马伦 杨大兵 杜雪树[2] 胡亮 夏明元[2] 李进波[2] 戚华雄[2] 徐俊英 万丙良[2] MA Lun;YANG Dabing;DU Xueshu;HU Liang;XIA Mingyuan;LI Jinbo;QI Huaxiong;XU Junying;WAN Bingliang(College of Agriculture,Yangtze University,Jingzhou,Hubei 434025,China;Institute of Food Crops,Hubei Academy of Agricultural Sciences/Key Laboratory of Crop Molecular Breeding,Ministry of Agriculture and Rural Affairs/Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement,Wuhan,Hubei 430064,China)

机构地区：[1]长江大学农学院,湖北荆州434025 [2]湖北省农业科学院粮食作物研究所/农业农村部作物分子育种实验室/粮食作物种质创新与遗传改良湖北省重点实验室,湖北武汉430064

出　　处：《杂交水稻》2025年第2期24-33,共10页Hybrid Rice

基　　金：湖北省支持种业高质量发展资金项目(HBZY2023B 001-10);湖北省农业科学院青年基金(2024NKYJJ02)。

摘　　要：E农香11S是湖北省农业科学院粮食作物研究所新选育的一个优质光温敏核不育系,其稻米细长、品质优、有香味、抗稻瘟病、生育期偏短。利用生育期相对较长、一般配合力高的光温敏核不育系隆科638S为亲本与E农香11S杂交,后代通过分子标记辅助选择和表型鉴定,创制了6个来源于“隆科638S/E农香11S”后代且同时携带Pi1、fgr和GL7基因的不育系新株系,对其育性、主要农艺性状、稻米品质及杂种优势进行了评价。新不育株系生育期较E农香11S长3.6~6.0d,主要农艺性状、稻米品质、育性等方面与E农香11S表现相似,一般配合力优于E农香11S,其中ML-S15所配杂交组合达到隆科638S所配组合和对照丰两优4号的产量水平。研究结果表明新不育株系可以用于培育长熟期、长粒、香型、抗稻瘟病的两系杂交稻新组合,具有较好的应用前景。E Nongxiang 11S is a high-quality photo-thermo-sensitive genic male sterile(PTGMS)line newly developed by the Institute of Food Crops,Hubei Academy of Agricultural Sciences.It has high quality with slender fragrant grain,blast resistance and short growth period.Longke 638S,a PTGMS line with a relatively long growth period and high general combining ability,was used as a parent to cross with E Nongxiang 11S.Through molecular marker-assisted selection(MAS)and phenotypic identification,six new sterile lines derived from the progeny of"Longke 638S/E Nongxiang 11S"and carrying Pi1,fgr and GL7 genes were created.Their fertility,main agronomic traits,grain quality and heterosis were evaluated.The growth period of the above mentioned six new sterile lines was 3.6~6.0 days longer than that of E Nongxiang 11S,their main agronomic traits,grain quality and fertility were similar to those of E Nongxiang 11S,and their general combining ability was better than that of E Nongxiang 11S.The hybrid combinations derived from ML-S15 reached the yield level of the Longke 638S-derived hybrids and the control Fengliangyou 4.The results showed that the new sterile lines could be used to develop new two-line hybrid rice combinations with long maturity,long grain,aroma and resistance to rice blast,and had a good application prospect.

关 键 词：水稻 光温敏核不育系 长粒 香味 抗稻瘟病 分子标记辅助选择 

分 类 号：S511.01[农业科学—作物学] S334