Why do flowers close at night? Experiments with the Lesser celandine Ficaria verna Huds (Ranunculaceae)
Why do flowers close at night? Experiments with the Lesser celandine Ficaria verna Huds (Ranunculaceae)
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为什么花在晚上会闭合？
DOI：
10.1111/bij.12752
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发表时间：
2016
影响因子：
1.9
通讯作者：
P. Fedor
中科院分区：
文献类型：
--
作者：
P. Prokop;P. Fedor
虽然花关闭的机制已被广泛研究，这种现象背后的进化过程在很大程度上是未知的。开放的花朵可能面临着成功授粉/花粉转移与外源因素（如雨水）对生殖器官的破坏之间的权衡。在田间和实验室条件下，通过处理白屈菜的花，调查了花开放的成本。在任何实验中，在处理的和未处理的花之间没有发现开花和繁殖成功的差异。然而，在田间实验中，处理过的花遭受了显着较高的捕食率，在所有的概率由蛞蝓和狍。有人建议，花关闭可能会降低被一些食草动物吃掉的速度，特别是在早春植物，花在食物供应不足的时候。
Although the mechanisms of flower closure have been widely studied, the evolutionary processes underlying this phenomenon are largely unknown. Open flowers may face a trade-off between successful pollination/pollen transfer on the one hand and destruction of reproductive organs caused by exogenous factors (e.g. rain) on the other. The cost of flower opening was investigated by treating flowers of the Lesser celandine both in the field and under laboratory conditions. No differences were found in anthesis and reproductive success between treated and untreated flowers in any of the experiments. However, treated flowers in the field experiment suffered from significantly higher predation rates, in all probability caused by slugs and roe deer. It is suggested that flower closure may decrease the rate of being eaten by some herbivores, particularly in early-spring plants that flower at times of insufficient food availability.