光周期效应 适宜光周期诱导的效果可以在植物体内保留而不致消失，这种现象称为光周期效应。当植物满足了适宜光周期的需要，以后即使处于非诱导周期条件下，仍能开花，而不需要适宜光周期一直持续到植物开花。
在冬型小麦的春化过程中有短日光周期效应。
The effect of short-day photoperiod is evident in the vernalization process on the ecotype of winter wheat varieties.
研究最彻底的是不同的光周期对高生长停止，萌芽和进入休眠的时间的效应。
Best studied are the effects of differing photoperiods on The Times of height growth cessation, bud formation and dormancy onset.
这种反应属于典型的光周期现象，而不是由温度的替代作用、光合时间的改变或前期短日后效应引起的。
The respose was not caused by the effects of temperature, photosynthetic duration or pre-flowering photoperiodic after-effect but was typical photoperiodism.
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