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采用分期播种试验方法，研究了光温条件对光温敏核不育小麦ＥＳ８不育基因表达的影响．结果表明，光温条件的变化影响不育基因的表达，在长沙地区，ＥＳ８在９月５日至１０月１５日播种，花粉败育率达１００％，不育株率达１００％．在１２月５日至１２月１５日播种，其自交结实率为７１．６～７２．７％，在１０月２５日至１１月２５日播种，表现为部分可育和部分不育．ＥＳ８存在两个育性转换的临界期，１０月２５日播期为不育变为半不育的育性转换临界期，１２月５日为部分可育变为完全可育的育性转换临界期．育性转换的临界日长约小于１１．５０ｈ．
The staged sowing test was used to study the effects of light and temperature on the expression of ES8 sterility in photo-thermo-sensitive genie male sterile wheat. The results showed that the change of light and temperature conditions affected the expression of sterile genes. In Changsha, ES8 was sown from September 5 to October 15 with a pollen abortion rate of 100% and a sterile plant rate of 100%. Seeding from Dec. 5 to Dec. 15, the self-fertility rate was 71.6-72.7%. Seeds were planted from Oct. 25 to Nov. 25, showing partial fertility and partial infertility. ES 8 there are two critical stages of fertility conversion, October 25 sowing date for sterile to semi-sterile fertility critical period of transition, on December 5 part fertile into a fully fertile fertility Transition critical period. The critical day for fertility conversion is less than 11.50 hours.