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植物的二次开花和二次结果引起了自然科学家的注意。对于这个问题曾在“自然”杂志的若干篇小品文中有所说明。直到今天人们仍然认为:温暖气候地区的多年生植物(木本的和草本的),只有在一定的低温时期以后,才能够开花,此时植物所形成的花芽便通过了它所必需的发育阶段。如果在当年所形成的花芽能在寒冷的天气来临以前开放,那么,这个低温时期对于植物是否一定必要呢?是怎样的原因才引起了植物的二次开花现象呢?
The secondary flowering and secondary results of plants have drawn the attention of natural scientists. This issue has been described in several essays in Nature. Until today people still think: Perennials (woody and herbaceous) in warm climates bloom only after a certain period of low temperature, at which time the flower buds formed by the plant pass through the stages of development in which it is needed. If the flower bud formed in that year can be opened before the cold weather is over, is it necessary for the plant to survive this cold period? What causes the secondary flowering of plants?