Entwicklungsgeschichte und Ultrastruktur von Pollenkitt und Exine bei nahe verwandten entomophilen und anemophilen Angiospermensippen derAlismataceae, Liliaceae, Juncaceae, Cyperaceae, Poaceae undAraceae
Entwicklungsgeschichte und Ultrastruktur von Pollenkitt und Exine bei nahe verwandten entomophilen und anemophilen Angiospermensippen derAlismataceae, Liliaceae, Juncaceae, Cyperaceae, Poaceae undAraceae
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泽泻科、百合科、灯芯草科、莎草科、禾本科和天南星科的被子植物
DOI：
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发表时间：
1980
影响因子：
1.9
通讯作者：
M. Hesse
中科院分区：
文献类型：
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作者：
M. Hesse
本文对具有不同授粉方式（虫媒传粉和风媒传粉）的单子叶植物泽泻科（Alismataceae）、百合科（Liliaceae）、灯心草科（Juncaceae）、莎草科（Cyperaceae）、禾本科（Poaceae）和天南星科（Araceae）近缘科植物的花粉囊和外壁的超微结构（花粉囊的数量、稠度和分布）进行了研究。昆虫性、风媒性和中间性单子叶植物的花粉胶结特征综合征在原则上与双子叶植物相同。通过与前人的研究结果比较，可以总结出：1）被子植物各亚纲的花药绒毡层都是以相同的方式产生花粉的。2)虫媒花粉和风媒花粉粘性的变化往往取决于花粉粒的分布和稠度，而与花粉粒在花粉表面的数量无关。3)风媒植物的花粉大多是“干燥的”和粉状的，在其外壁腔中总是含有数量不等的“非活性的”花粉囊。4)从虫媒到风媒，花粉胶结综合征有一个逐步的变化。5)从花粉在所有风媒传粉被子植物中的普遍存在，我们可以得出结论，风媒被子植物的祖先可能一直是动物媒（即虫媒）的。
Some closely related members of the monocotyledonous familiesAlismataceae, Liliaceae, Juncaceae, Cyperaceae, Poaceae andAraceae with variable modes of pollination (insect- and wind-pollination) were studied in relation to the ultrastructure of pollenkitt and exine (amount, consistency and distribution of pollenkitt on the surface of pollen grains). The character syndromes of pollen cementing in entomophilous, anemophilous and intermediate (“ambophilous” or “amphiphilous”) monocotyledons are the same in principal as in dicotyledons. Comparing present with former results one can summarize: 1) The pollenkitt is always produced in the same manner by the anther tapetum in all angiosperm sub-classes. 2) The variable stickiness of entomophilous and anemophilous pollen always depends on the particular distribution and consistency of the pollenkitt, but not its amount on the pollen surface. 3) The mostly “dry” and powdery pollen of anemophilous plants always contains a variable amount of “inactive” pollenkitt in its exine cavities. 4) A step-by step change of the pollen cementing syndrome can be observed from entomophily towards anemophily. 5) From the omnipresence of pollenkitt in all wind-pollinated angiosperms studied one can conclude that the ancestors of anemophilous angiosperms probably have been zoophilous (i.e. entomophilous) throughout.