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植物研究 ›› 2000, Vol. 20 ›› Issue (1): 58-62.

• 论文 • 上一篇    下一篇

东北杜鹃花属植物花粉形态的研究

毛子军1, 杨永富2, 侯丽君2   

  1. 1. 东北林业大学森林植物生态学开放研究实验室, 哈尔滨 150040;
    2. 大兴安岭新林林业局, 新林 165000
  • 收稿日期:1999-09-20 出版日期:2000-03-15 发布日期:2016-06-14

A STUDY ON THE POLLEN MORPHOLOGY OF RHODODENDRON IN NORTHEAST OF CHINA

MAO Zi-jun1, YANG Yong-fu2, HOU Li-jun2   

  1. 1. Open Research Laboratory of Plant Ecology, Northeast Forestry University, Harbin 150040;
    2. Xinlin Forestry Bureau, Heilongjiang Province, Xinlin 165000
  • Received:1999-09-20 Online:2000-03-15 Published:2016-06-14

摘要: 利用光学显微镜和扫描电子显微镜对东北杜鹃花属(Rhododendron Linn.)6种, 1变种, 1变型的花粉形态进行了观察和比较研究。该属花粉粒均为四合花粉。四合花粉呈正四面体排列。花粉粒近球形。每粒花粉均具3沟,在四合花粉粒上,相邻花粉粒上的沟相接,有些种可见沟内的萌发孔。光镜下可见花粉外壁为内外两层,厚度约相等。不同的种在花粉粒大小上有区别。在扫描电镜下观察可见不同的种花粉表面具有不同的纹饰。即该属在花粉形态上具有种的特性。

关键词: 杜鹃花, 花粉形态, 四合花粉

Abstract: Pollen morphology of 6 species, 1 variety, 1 form of genera Rhododendron (Ericaceae), distributing in northeast of China, was examined in the light microscope(LM) and with the scanning electron microscope(SEM). All of the pollen grains of Rhododendron are characterized in tetrahedral tetrad. Pollen grains of Rhododendron are spheroidal or subspheroidal with 3-colporates, which shaped as half-colpi due to two neighborly grains of tetrahedral tetrad link together. Exine is composed with two layers in LM. The ornamentation of the exine is reticulate or granulate. The size of the pollen grains ranges from 34.7~61.7μm. Pollen grains are diverse in size and in the ornamentation of the exine. These can be taken as the characters for identification of species.

Key words: Rhododendron, Pollen morphology, Tetrad