水稻温敏核不育系多环境多次选择育种技术研究  

Studies on Breeding Technique of Multiple Selection with Multi-Environments for Thermo-sensitive Genic Male Sterile Lines in Rice

作　　者：蒙秀锋 黎金玲[3] 梁德强 

机构地区：[1]贺州市农业科学研究所,广西贺州542809 [2]广西绿田种业有限公司,广西贺州542800 [3]广西农业职业技术学院,广西南宁530007 [4]金秀瑶族自治县科学技术协会,广西金秀545700

出　　处：《杂交水稻》2011年第3期7-10,共4页Hybrid Rice

基　　金：广西贺州市科技攻关项目[贺科综字(2008)8号]

摘　　要：以水稻温敏核不育系孟S为材料,利用海拔100,700和1 000 m 3个不同的海拔高度设立不同温度梯度的3个环境,在自然条件下种植大群体,通过对比育性检测,筛选不育起点温度比原群体更低的单株。结果表明,经过3次选择,孟S不育起点温度由24℃降到了23℃。Using Meng S,a thermo-sensitive genic male sterile（T GMS） line in rice,as the material,the single plants with lower critical temper atures（CT） of sterility alteration,based on the identification of pollen steri lity and bagged selfed seed-setting rate,were selected for one to three times among the large populations（5 000 plants） under the natural conditions of thre e environments with different low temperature stress,i.e.,the locations of 100,700 and 1 000 m of elevation.The results showed that the CT of Meng S was suc cessfully decreased from 24℃ to 23℃ after three times of fertility selection u nder the natural conditions of three environments.

关 键 词：水稻 温敏核不育系 不育起点温度 多环境选择 育种技术 

分 类 号：S511.03[农业科学—作物学] S334