摘要
以培矮 64S和安湘S等不育基因来源不同的 5个水稻光温敏核不育系为材料 ,在人工气候室进行长日低温处理 ,考查各材料从核心种子至原种一代各世代平均花粉不育度 ,以探明不育起点温度漂移规律。结果表明 :1)不育起点温度漂移普遍存在于不同不育基因来源的光温敏不育系中 ;2 )不育基因来源不同的不育系起点温度漂移幅度和漂移频率均存在明显差异。对不同不育系不育起点温度漂移规律以及生产上对光温敏不育系的利用策略进行了讨论。
The rule of the drift in critical sterility inducing temperature (CSIT) of PTGMS lines in rice was studied on the basis of the change in average pollen sterility of different generations from the generation of core seeds to the first generation of foundation seeds under the long daylength and low temperature conditions in phytotron, using 5 PTGMS lines with different origins of male sterile genes such as Pei'ai 64S and Anxiang S as the materials. The results showed that: ①The phenomenon of CSIT drift existed commonly among the lines of different PTGMS genes; ②There existed obvious difference in the drifted degree and frequency of CSIT between the lines with different PTGMS genes. Furthermore, the rule of drift in CSIT of the lines derived from different PTGMS genes and the strategy to utilize them in production were discussed.
出处
《杂交水稻》
CSCD
北大核心
2003年第2期62-64,共3页
Hybrid Rice
基金
湖南省自然科学基金项目 [湘科技字 (97) 3 7-1]
关键词
水稻
光温敏育系
育性稳定性
不育起点温度漂移
rice
PTGMS line
fertility stability
drift in critical sterility inducing temperature
