优质籼型软米光温敏核不育系云软209S的选育  

Breeding of Indica Type Photo-thermo-sensitive Genic Male Sterile Line Yunruan 209S with Soft Grains and Good Quality in Rice

作　　者：涂建[1] 罗友金 董阳钧 周世华 奎丽梅[1] 谭春艳[1] 刘义富[1] 卢义宣[1] 

机构地区：[1]云南省农业科学院粮食作物研究所,云南昆明650205 [2]水富县种子管理站,云南水富657800

出　　处：《杂交水稻》2008年第3期9-11,共3页Hybrid Rice

基　　金：国家农业部“948”项目(2006-G1);国家科技支撑计划(2006BAD01A01);云南省“十一五”科技攻关项目(2006NG03)

摘　　要：云软209S是用蜀光612S作母本与优质软米品种云恢290杂交,经7a9代选育出的籼型光温敏核不育系。该不育系在云南水富连续不育期长50d左右,不育起点温度低于23℃,不育期间群体不育性稳定,花粉败育彻底,可育期间可繁性好,海南冬繁自交结实率49.3%。柱头外露率高达85.8%,开花习性好,张颖角度大,综合农艺性状优良。稻米品质优,直链淀粉含量较低,是用云南籼型软米改良育成的第1个软米光温敏核不育系,2007年8月通过云南省科技厅技术鉴定。Yunruan 209S is an indica type photo-thermo-sensitive genie male sterile （PTGMS） line which was developed by crossing Shuguang 612S, an elite TGMS line, with Yunhui 290, a soft grain variety with good grain quality. It is the first PTGMS line of soft rice with a relatively low amylose content developed from Yunnan indica soft rice. Its stable consecutive male sterile period was about 50 days at Shuifu, Yunnan with a critical temperature lower than 23 ℃. Its male sterility in the sterile period was complete and very stable, while it was easy to multiply itself in its fertile period. The seed setting rate was 49.3% when it was multiplied in Hainan in Winter. It has also good grain quality and a high stigma exsertion rate （85.8%） and other good flowering habits. It was technically identified in Yunnan Province in 2007.

关 键 词：两系杂交水稻 光温敏核不育系 云软209S 软米 选育 

分 类 号：S511.03[农业科学—作物学] S334