The basic pollen wall types in Araceae

被引:37
作者
Weber, M [1 ]
Halbritter, H [1 ]
Hesse, M [1 ]
机构
[1] Univ Vienna, Inst Bot, Dept Ultrastruct Res & Electron Microscopy, A-1030 Vienna, Austria
关键词
endexine; ektexine; polysaccharidic ornamentations; Spathiphyllum; Spathicarpa; Arum; Pistia; Zantedeschia; reproductive biology;
D O I
10.1086/314122
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
An ultrastructural investigation of 60 species, representing 47 genera, of Araceae showed two basic pollen wall types, each with two subtypes. The two main types are distinguished by presence (type 1) or absence (type 2) of an acetolysis-resistant ektexine. The subtypes are differentiated by a structured (type 1a) or unstructured (type 1b) ektexine, respectively, and the presence (type 2a) or absence (type 2b) of polysaccharidic wall ornamentations. A characteristic of all types is a spongy endexine, which is electron dense after thiocarbohydrazide-silver proteinate staining and is only partially resistant to acetolysis.
引用
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页码:415 / 423
页数:9
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