开花素（florigen），又称开花激素，是能够调控被子植物开花时间的蛋白质。[1][2]植物通过叶子接受光信号后，开花素能被输送至茎端，使植物开花[3]。植物的叶子中能产生开花素。[4][5]
参考文献
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