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感光性不同的4个光敏感雄性不育粳稻经受14小时光周期下的31/27℃、31/22℃、31/17℃、27/22℃和27/17℃ 5种光期温度/暗期温度组合处理。考察其花粉育性的结果表明:1,在试验设计的光、温条件下,参试的不育品系都表现高度的光敏感雄性不育。但是,不同温度处理引起了败育水平的显著变化。2,光期温度下降4℃、暗期温度相同时,花粉育性极显著地增加;光期温度不变,暗期温度变动幅度为5℃时(31/27℃处理除外),不影响光敏感雄性不育的表现。3,不同品系光敏感雄性不育表现对温度处理的反应不同,而且有明显不同的“温度×品系”互作效应。本试验中未见感光性不同品系不育性表现对温度敏感性的显著区别。
Four photosensitive male sterile rice varieties with different photosensitivity were subjected to five photoperiod temperatures / darkness of 31/27, 31/22, 31/17, 27/22 and 27/17 in a 14-hour photoperiod Period temperature combination treatment. The results of pollen fertility test showed that: 1. Under the experimental conditions of light and temperature, the tested sterile lines all showed high light-sensitive male sterility. However, different temperature treatments caused significant changes in abortion levels. 2, the photoperiod temperature dropped 4 ℃, the same temperature in the dark phase, the pollen fertility increased significantly; the photoperiod temperature was unchanged, the dark temperature fluctuation range of 5 ℃ (31/27 ℃ treatment excluded), does not affect the light Sensitive performance of male infertility. The responses of light-sensitive male-sterile to different temperature-sensitive strains were different, and there were obviously different “temperature × strains” interaction effects. In this experiment, no significant differences in the sensitivity to temperature were found for the sensitivity of different strains of light-sensitive lines.