Tapetum character states: analytical keys for tapetum types and activities
Tapetum character states: analytical keys for tapetum types and activities
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DOI：
10.1139/b97-859
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发表时间：
1997-09-01
期刊：
影响因子：
--
通讯作者：
Pacini, E
中科院分区：
文献类型：
--
作者：
Pacini, E
描述了种子植物中绒毡层的不同类型，沿着了相关特征。人物绒毡层类型：（ii）细胞壁、绒毡层类型和室;（iii）单独的绒毡层细胞、绒毡层类型和室;（iv）被绒毡层细胞包裹的花粉粒数目和花粉散布单位的类型;（v）细胞类型和绒毡层类型：（vi）每个细胞的核数目和绒毡层类型;（vii）活动过度的周期;（viii）外壁形成;（ix）圆形;（x）顶周膜;（xi）质体分化;（xii）绒毡层细胞退化的花粉发育阶段和花粉衣的类型;（xiii）贮藏液泡;（xiv）孢子体蛋白;（xv）绒毡层起源的负责复合花粉形成和授粉的装置。文中给出了一些例子，并提供了一个结构和功能多样性的分析关键，为绒毡层的研究提供了一个有用的方法。
The different types of tapetum found in the spermatophyta are described, along with associated characters. The characters (taken singly, pairwise, or in multiple combinations) are (i) tapetum types: (ii) cell walls, tapetum types, and loculus; (iii) tapetal cells individually, tapetum types, and loculus; (iv) number of pollen grains enveloped by tapetal cells and type of pollen dispersing unit; (v) cell types and tapetum types: (vi) number of nuclei per cell and tapetum type; (vii) cycles of hyperactivity; (viii) exine formation; (ix) orbicles; (x) peritapetal membrane; (xi) plastid differentiation; (xii) stage of pollen development in which tapetal cells degenerate and type of pollen coat; (xiii) storage vacuoles; (xiv) sporophytic proteins; and (xv) devices of tapetal origin responsible for compound pollen formation and pollination. Examples are given and an analytical key of structural and functional diversity is provided as a helpful approach to the study of the tapetum.