籼型水稻不育系桂源A的选育  

Breeding of Indica CMS Line Guiyuan A in Rice

作　　者：石瑜敏[1] 王威豪[1] 刘百龙[1] 黎兆安[2] 韦善富[1] 周行[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/广西水稻遗传改良重点实验室/国家水稻改良中心南宁分中心,广西南宁530007 [2]广西大学农学院,广西南宁530005

出　　处：《杂交水稻》2012年第2期13-14,26,共3页Hybrid Rice

基　　金：广西科技攻关(桂科攻1123001-4G)

摘　　要：桂源A是广西农业科学院水稻研究所以龙特浦B/H14//H14的F3代优良单株与博A测交,并经过连续多代回交转育而成的籼型三系不育系,2010年9月通过广西区品种审定委员会技术鉴定。该不育系分蘖力强,穗大粒多,生育期较短,不育性稳定,柱头外露率高,异交结实率高,对"九二○"敏感,容易繁殖和制种。Guiyuan A, developed from the cross of Bo A/（l.ongtepu B/H14,//H14）F3 and its subsequent back- crosses by the Rice Research Institute of Guangxi Academy of Agricultural Sciences, is a new indica CMS line in hybrid rice. It was technically certified in Guangxi in September, 2010. It is characteristic of strong tillering abili- ty, large panicle with many spikelets, short growth duration, stable and complete male sterility, high stigma exser- tion, high out-crossing rate, good sensitivity to GA3 and easiness for multiplication and hybrid seed production. The Fl hybrids derived from Guiyuan A and several restorer lines showed a higher yield than the control hybrids with similar maturity in a preliminary yield thai in 2010.

关 键 词：杂交水稻 三系不育系 桂源A 选育 

分 类 号：S511.03[农业科学—作物学] S334