多基因聚合改良水稻骨干亲本华占的病虫抗性  

Pyramiding Multiple Genes to Improve the Disease and Pest Resistances of Rice Backbone Parent Huazhan

作　　者：吴云天 程计华 王玉博 莫惠 黎长红 李宙炜 吴刚 徐志 田冰川 WU Yuntian;CHENG Jihua;WANG Yubo;MO Hui;LI Changhong;LI Zhouwei;WU Gang;XU Zhi;TIAN Bingchuan(Huazhi Biotechnology Co.Ltd.,Changsha,Hunan 410128,China;Hunan Province Green Food Office,Changsha,Hunan 410128,China)

机构地区：[1]华智生物技术有限公司,湖南长沙410128 [2]湖南省绿色食品办公室,湖南长沙410128

出　　处：《杂交水稻》2025年第1期44-51,共8页Hybrid Rice

基　　金：湖南省科技创新计划(2021JC0007,2022WZ1029)

摘　　要：以华占为研究对象,利用分子标记辅助选择技术,在聚合白叶枯病抗性基因Xa7和Xa21、褐飞虱抗性基因Bph14和Bph15、抗倒伏基因SCM3的同时,保留华占产量、稻瘟病抗性和配合力优势,育成了多抗强优势恢复系华占改良系华智R11903(简称智903)。华占改良系的白叶枯病、褐飞虱抗性及米质、抗倒性显著优于华占,以华占改良系为父本配制出的组合均表现出产量高、米质优、抗性强等特点,实现了华占系列组合的更替和延续,表现出较大的商业价值。The rice backbone parent Huazhan was used as the research object,and molecular marker-assisted selection technology was used to polymerize the bacterial blight resistance genes Xa7 and Xa21,the brown planthopper resistance genes Bph14 and Bph15,and the lodging resistance gene SCM3.On the basis of maintaining the advantages of Huazhan in yield,rice blast resistance and combining ability,the Huazhan improved line Huazhi R11903(referred to as Zhi 903),a superior multi-resistant restorer line,was developed.The resistance to bacterial blight and brown planthopper,grain quality and lodging resistance of the Huazhan improved line were significantly better than those of Huazhan.The hybrid combinations derived from the Huazhan improved line showed the characteristics of high yield,good grain quality and strong resistance,which realized the replacement and continuation of Huazhan series of hybrid combinations and showed great commercial value.

关 键 词：杂交水稻 多基因聚合 抗性改良 分子标记辅助选择 华占 

分 类 号：S511.01[农业科学—作物学] S334