摘要
通过对双亲及F1的感光性分析和F2 群体单株的感光性及短光不育特性分析表明 ,强感光性对弱感光性表现为显性 ;具短光不育特性的单株其感光性均表现为中度以上感光 (短日出穗促进率 >15 % ) .对宜D1S与宜D2S的光敏性、感光性分析和不育基因的等位性测定表明 ,两者感光性与光敏性符合正相关的结论 ,它们的不育主基因是等位的 .可以认为 ,对短光低温不育水稻 ,短光不育基因需要在感光性基因存在时才能得到表达 ,同一不育基因导入不同遗传背景的材料 ,育性表现不同 ,并非不育基因本身发生了变异 ,而是基因表达条件 (如感光性的遗传背景 )
The photoperiodic response of F 1 and its parents was analyzed, and the photoperiodic response and short photoperiod sensitive male sterility of F 2 progenies were studied in this paper. The results showed that the strong response was dominant over the weak response to photoperiod.The photoperiodic response of plants with short photoperiod sensitive male sterility in F 2 was above medial degree(the rate of heading acceleration >15%). Photoperiodic response showed a positive correlation with short photoperiod sensitive male sterility. The main sterility genes of Yid1s and Yid2s were allelism. It can be inferred that the short photoperiod sensitive male sterile gene might be expressed upon the presence of the photoperiodic response genes, and that the short photoperiod sensitive male sterility of plants with the same genes could differ in their reproductive expressions,not because of the changes of the genes,but the difference in genetic backgrounds of photoperiodic response.
出处
《应用生态学报》
CAS
CSCD
2000年第5期710-712,共3页
Chinese Journal of Applied Ecology
基金
广东省自然科学基金!(960 4 2 3)
广东省重点科技攻关资助项目
关键词
感光性
水稻
光敏不育性
育性表达
遗传背景
Photoperiodic response, Short photoperiod sensitive male sterility, Rice.
