籼型水稻不育系桂丰A的选育  

Breeding of Indica CMS Line Guifeng A in Rice

作　　者：王威豪[1] 刘百龙[1] 周行[1] 石瑜敏[1] 韦善富[1] 宋智萍[1] 毛昌祥[1] 

机构地区：[1]广西壮族自治区农业科学院水稻研究所/国家水稻改良中心南宁分中心,广西南宁530007

出　　处：《杂交水稻》2013年第4期11-12,共2页Hybrid Rice

基　　金：广西科技攻关项目(桂科合1140011-1;桂科合1298015-7;桂科合1346009-1;桂科能1298018-1;桂科攻1123001-4G);南宁市科技项目201109084G;广西农业科学院公益性维持费项目(桂农科2013GW06)

摘　　要：桂丰A是广西农业科学院水稻研究所以自选保持系H14(IR58025B×金23B)为母本与粤泰B杂交,后代再与博A测交并连续回交转育而成的水稻不育系,具有穗大粒多、不包颈、败育彻底、育性稳定、异交结实率高、配合力强等特点,2012年10月通过广西农作物品种审定委员会组织的田间技术鉴定。Guifeng A, developed by Rice Research Institute of Guangxi Academy of Agricultural Sciences, is a new CMS line in rice. For the breeding procedure of Guifeng A, firstly, some F4 single p/ants from the cross of H14 （ a maintainer line derived from IR58025B/Jin 23B） and Yuetai B were selected to cross in pair with Bo A to test their maintaining ability. Then, the plants with good maintaining ability were selected to successively backeross in pair with completely male sterile plants till both the backcrossing population and its corresponding paternal population were uniform in plant morphology in 2010. It is characterized with large panicles with many spikelets, complete and stable male sterility, good panicle exsertion, high out-crossing rate and high combining ability. It was technically certified in Guangxi in October, 2012.

关 键 词：杂交水稻 三系不育系 桂丰A 选育 

分 类 号：S511.03[农业科学—作物学] S334