YM型小麦雄性不育系KTM3314A的温敏特性  

Thermo-sensitive Properties of Wheat YM-type Male Sterile Wheat Line KTM3314A

作　　者：罗钊[1] 宋喜悦[1] 何蓓如[1] 李宏斌[1] 胡银岗[1] 马翎健[1] 肖海峰[1] 

机构地区：[1]西北农林科技大学农学院,陕西杨凌712100

出　　处：《麦类作物学报》2010年第4期612-616,共5页Journal of Triticeae Crops

基　　金：西北农林科技大学基本科研业务基金资助项目(QN2009001);唐仲英育种基金项目(A212020914)

摘　　要：为了明确YM型小麦温敏不育系KTM3314A的育性转换特性,以1B/1R类型K型小麦雄性不育系K3314A和YM型小麦雄性不育系KTM3314A为试验材料,进行分期播种(秋播、春播)和剪穂再生试验,以K3314A为对照,比较不同播期及再生分蘖穗的自交结实率,并与同期的温度、湿度等气象数据对照,以确定KTM3314A的温度敏感期和临界温度。结果表明,K3314A秋播、春播及再生分蘖穗皆完全雄性不育,KTM3314A秋播完全雄性不育,春播及再生分蘖穗育性部分恢复,育性转换的温度敏感期在孕穗前后5 d,临界温度为18.14℃,表明KTM3314A具有温度敏感特性。The wheat CMS lines with Ae.kotschyi cytoplasm,1B/1R type K3314A,YM-type male sterile line KTM3314A,were sowed in autumn and spring,the regenerated tillers from the individuals sowed at autumn as well.We observed and compared self-seed-setting rate of two types of male sterile lines at diferrent developmental stages under the various photo-thermo-condition.The results showed that KTM3314A was completely male sterile while sowed in autumn,but was partially fertile while sowed in appropriate spring and regene...

关 键 词：小麦 温敏特性 温敏期 临界温度 

分 类 号：S512.1[农业科学—作物学]