Thermoperiodism The phenomenon shown by certain plants, e.g.Chrysanthemum and tomato (Lycopersicon esculentum) in which there is a response to daily alternations of low and high temperature.

• 植物的)温周期现象：特殊植物种类具有的一种对日常高低温变化的反应，如：菊科和番茄(Lycopersiconesculentum)。