光周期条件对水稻光敏不育温度效应值的影响  

Influence of photoperiodic condition on temperature effect level of Photoperiodic Sensitive Genie Male sterile (PGMS) rice.

作　　者：薛光行[1] 申岳正[1] 

机构地区：[1]中国农业科学院作物育种栽培研究所,北京100081

出　　处：《应用生态学报》1997年第1期17-20,共4页Chinese Journal of Applied Ecology

基　　金：国家 8 63计划资助项目

摘　　要：利用人工气候箱设置 31 /2 2℃、2 7/2 2℃ 2种昼 /夜温度处理及 1 0 .0、1 2 .0、1 3.0、1 3.6、1 4.0和 1 5.0 h6种光周期处理 ,考察光周期条件对水稻光敏不育温度效应值的影响 .结果表明 ,在对照品种雄性育性正常且光敏不育水稻能发生 SD可育与 L D完全不育育性转换的温度范围内 ,气温降低 4℃可以诱发温度效应 ,即可使在各光周期处理组的光敏不育水稻雄性可育程度明显增高 .光周期条件不同时温度效应值明显不同 .温度效应随日长的缩短而急剧增加 ,与日长有负相关的趋势 ,可以认为 ,通过培育败育临界日长较短的光敏不育水稻 ,人为调节制种地区 (季节 )实际日长与临界日长的关系 ,可促进光敏不育特性表达 ,减低温度的影响 。Controlled temperature and photoperiod experiments with two day/night temperature (31/22℃,27/22℃) and 6 photoperiods (10.0,12.0,13.0,13.6,14.0 and 15.0 hours)were conducted in a phytotron to observe the influence of photoperiodic treatments on temperature effect level of 3 varieties of PGMS rice. The results indicate that under the temperature regime the male fertility of controlled variety is completely normal, but the conversion between SD fertility and LD complete sterility can occur in PGMS rice, a drop of 4℃ in temperature can lead to their temperature effect, and result in a significant decrease of their male sterile degree under different photoperiods. The temperature effect level varies significantly with different photoperiods, which increases abruptly with the shortening of day length, and tends to negatively correlated with day length. It is implied that by means of breeding PGMS rice with shorter sterile critical day length and artificially regulating the relationship between practical day length and sterile critical day length,it is possible to reduce the influence of temperature and to stabilize the male sterile level of PGMS rice.

关 键 词：水稻 雄性不育 光周期 温度效应 光敏不育 

分 类 号：S511.01[农业科学—作物学]