蓼科花粉外壁超微结构的研究

周忠泽,许仁鑫,庄永龙,林中清

ZHOU Zhong-Ze, XU Ren-Xin, ZHUANG Yong-Long, LIN Zhong-Qing

摘要：

用扫描电镜和透射电镜对蓼科6属15种的花粉壁构造的特点进行了观察和研究。结果表明：

(1)外壁纹饰有如下几种：颗粒-穿孔，微刺-穿孔，微刺-穿孔-光滑，颗粒-穿孔-光滑，细网状，粗网状，皱

块状，鼓锤状；(2)外壁结构分化成两个明显的层次，即外壁外层以及外壁内层。其外壁外层由覆盖层、

柱状层和基层组成。然而，由于每一部分发育状况的不同而导致外壁结构有各种变化，如无覆盖层或无

外壁内层。

关键词: 蓼科, 花粉外壁, 超微结构

Abstract:

Pollen grains of 15 species representing 6 genera in the Polygonaceae were examined un-

der scanning electron microscope (SEM) and transmission electron microscope (TEM). The results

are summarized as follows: (1) The ornamentation of exine is granulate-perforate, microechinate-

perforate, microechinate-perforate-smooth, granulate-perforate-smooth,finely reticulate, coarsely re-

ticulate, or rugulate, granulate. (2) Under TEM all of the taxa examined generally have the exine

stratification typical of the dicots: tectum, columellae, foot layer and endexine, although differences

in the development of each of these units have resulted in variation in the exine structure.

Key words: Polygonaceae, Pollen exine, Ultrastructure

周忠泽,许仁鑫,庄永龙,林中清. 蓼科花粉外壁超微结构的研究[J]. 中国科学院大学学报, 2000, 38(5): 446-451.

ZHOU Zhong-Ze, XU Ren-Xin, ZHUANG Yong-Long, LIN Zhong-Qing. Studies on pollen exine ultrastructure of the Polygonaceae[J]. , 2000, 38(5): 446-451.

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