摘要
采用盆栽方式,通过人为疏枝减库平衡库源关系,研究短日低温、高温,长日低温、高温条件下不同温敏型两系杂交稻F_1育性(受精率)的变化.结果表明:1,低温敏型F_1育性稳定,不论长日或短日都对温度变化表现钝感.高温敏型及反向温敏型F_1育性对温度的反应与其母本基本一致;2,温度高低不是影响不同温敏型F_1育性变化的唯一因子,短日普遍降低各类型F_1的受精率;3,长日条件下低温敏型、高温敏型F_1受精率并不随温度的变化而出现育性的波动,但低温明显影响反向温敏型F_1育性的表达;4,短日条件下反向温敏型及高温敏型F_1育性随温度的提高其育性明显下降,后者尤为突出.不同温敏型F_1育性的温光效应特性应引起育种家与栽培学家的高度重视.
The F1 fertility rate (FR) of lower-, higher-, and negative- thermo-sensitivity (LTS, HTS & NTS) hybrid rice was investigated under different temperature & light conditions. The results showed; 1. The F1 FR was relatively stable for LT hybrid rice while the others were not stable; 2. Temperature was not the only factor to affect the F1 FR, and the short day effect were more important; 3. Under the long days, the F1 FR of LT and HT hybrids varied with the temperature change. And lower temperature can obviously reduced the F1 FR of RT hybrid rice; 4. Under the short days, the F1 FR of HT & RT hybrids decreased as the temperature lowered.
出处
《作物学报》
CAS
CSCD
北大核心
1999年第6期742-746,共5页
Acta Agronomica Sinica
关键词
F1育性
温敏型
两系杂交稻
温光效应
水稻
fertility rate (FR)
TGMS hybrid rice
Temperature & light response.
