水稻直穗散穗性状的初步研究  

PRELIMINARY STUDIES ON ERECT-DROOPING PANICLE IN RICE

作　　者：郭伟伟[1,2] 李广贤 王光全[1] 袁守江 张文会[1] 赵金凤[2] 李学勇[2] 

机构地区：[1]聊城大学生命科学院,山东聊城252059 [2]中国农业科学院作物科学研究所/国家基因资源与基因改良重大科学工程,北京100081 [3]山东省水稻研究所,山东济南250000

出　　处：《核农学报》2012年第1期11-16,共6页Journal of Nuclear Agricultural Sciences

基　　金：国家"转基因生物新品种培育科技重大专项"重大课题(2011ZX08009-003)

摘　　要：在均为散穗穗型的亲本香粳9407和IRBB60配制的RIL群体中,发现5个家系中直立穗型和散穗穗型表现出3∶1的分离。对控制直立穗型性状的基因进行了分子标记定位,定位在第9染色体上基因座位LOC_Os09g26999处,在纯合直穗株系中该基因缺失了637bp,导致蛋白质的翻译提前终止,并有56个氨基酸改变。最后,对直立穗型等位基因的来源进行了探讨。In this study, recombinant inbred lines （RIL） were derived from crosses between Xiangjing 9407 and IRBB60. Although both parents have characteristics of drooping panicle, five RIL lines showed the segregation of the erect and drooping panicle phenotype with a ratio of 3： 1. The locus responsible for the erect panicle was found to be the gene model LOC Os09g26999 on chromosome 9. Compared with the cultivar Nipponbare which has a drooping panicle, there was a 637 bp deletion in the forth and fifth exon of this gene in the lines with erect panicle.

关 键 词：水稻 直穗散穗 隐蔽有利基因 

分 类 号：S511[农业科学—作物学]