期刊
PROTOPLASMA
卷 216, 期 3-4, 页码 171-180出版社
SPRINGER WIEN
DOI: 10.1007/BF02673869
关键词
carbohydrate reserve; dehydration; pollen tube emission; pollen water content; viability
The aim of this paper is to draw attention to partially hydrated pollen. namely, pollen grains having a high water content (>30%), this type of pollen is more frequent than previously thought. Various cyto-physiological strategies are used to retain water during exposure and dispersal such as cytoplasm carbohydrates: in the absence of such strategies, fast pollination must be ensured, because uncontrolled loss of water leads to pollen death. On the other hand, a state of partial hydration allows a fast tube emission (even within 3-5 min). Several methods for determining the hydration status of pollen at anthesis are proposed.
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