水稻新资源光(温)敏核不育系长S的初步研究  

Preliminary Study on Chang S,a New Thermo Sensitive Genic Male Sterile Line

作　　者：郑卓[1] 段世华[1] 贺根和[1] 曾建军[1] 廖信军[1] 

机构地区：[1]井冈山大学生命科学学院,江西吉安343009

出　　处：《贵州农业科学》2010年第12期1-4,共4页Guizhou Agricultural Sciences

基　　金：江西省生态环境与资源重点实验室专项基金"水稻新质源温敏核不育材料长S的育性遗传分析"(GJJ09658)

摘　　要：为研究和发掘水稻两系不育系新资源,用普通野生稻与籼稻珍珠矮杂交,在其杂交后代F2群体中发现1株雄性不育突变体,选择该F2群体中可育株与该不育突变体进行测交,在测交后代群体中继续选择可育株与不育株测交直至群体农艺性状基本一致,获得雄性不育材料,暂命名为长S。该不育材料属隐性核不育,且不育基因与株1S、C815S不育基因等位,用三系保持系、恢复系与高世代群体内的不育株进行测交,测交F1均表现正常可育。自然条件下雄性不育材料表现为长日高温不育、低温可育,且育性转换明显。该雄性不育材料与株1S、C815S正反交F1在江西吉安正季抽穗表现不育,而与培矮64S、9701S正反交F1正季抽穗正常可育。Chang S,a new thermo sensitive genic male sterile line,was bred from F2 population of Oryza rufipogon×Zhenzhu＇ai（indica rice）by continuous test crosses.The sterile gene of Chang S,1S and C815S is allelic.F1 fertility performance of test crosses between Chang S × maintainer lines or restorer lines is normal.The fertility of Chang S is sterile under longer light duration with high temperature and fertile under longer light duration with low temperature in field.The F1 fertility of the reciprocal crosses between Chang S×1S and C815S is sterile,while the F1 fertility of the reciprocal crosses between Chang S×Pei＇ai 64S and 9701S is fertile in normal planting season in Ji＇an.

关 键 词：普通野生稻 籼稻 光温敏核不育 

分 类 号：S511[农业科学—作物学]