利用Gn1a基因进行粳稻穗粒数改良的研究  

Study on Improving Grain Number of Japonica Rice by Using Gn1a Gene

作　　者：殷得所[1] 李进波[1] 万丙良[1] 方国成[1] 戚华雄[1] 

机构地区：[1]湖北省农业科学院粮食作物研究所/粮食作物种质创新与遗传改良湖北省重点实验室,武汉430064

出　　处：《湖北农业科学》2016年第21期5455-5457,5518,共4页Hubei Agricultural Sciences

基　　金：国家转基因生物新品种培育科技重大专项(2014zx08001-001);国家“973”计划“分子设计和多基因组装育种”项目(2013CBA01405)

摘　　要：增加穗粒数是提高水稻产量的有效途径,为了培育高产中熟粳稻新品系,采用回交育种并结合分子标记辅助选择技术,将感温型大穗品系HK05418的大穗基因Gn1a导入到感光型优质晚粳品种秀水134中。在BC2F4代得到农艺性状稳定、等位基因纯合、早熟且每穗粒数、单株产量显著优于秀水134的稳定株系C3068。Increasing grain number is a reliable way to abstain high yield of rice. In order to develop new japonic lines possessing high yield potential,the Gn1 a MAS（molecular assistant selection） assay was carried out,the null allele of Gn1 a in HK05418 was transferred to the target variety,Xiushui 134. By backcrossing,inbreeding,screening and selecting,a new line C3068 from BC2F4 was identified as more early maturing and high yield than the control variety Xiushui 134.

关 键 词：粳稻 Gn1a基因 分子标记辅助选择 穗粒数 

分 类 号：S330[农业科学—作物遗传育种]