菊苣族植物的花粉形态

本文对我国15属,28种菊苣族(Cichorieae)植物的花粉进行了研究。根据花粉萌发孔的数目,极面特征及纹饰特点,菊苣族植物花粉可分为6类:(1)4孔沟花粉类型,(2)具发达极板3孔沟花粉类型;(3)具小极板3孔沟花粉类型;(4)多小穴3孔沟花粉类型;(5)具条纹3孔沟花粉类型;(6)具3苣极面网胞3孔沟花粉类型。据各属种主要花粉特征,作出了花粉形态分属种检索表。本文还对菊苣族植物花粉形态的多样性、萌发孔的演化趋向,以及花粉类型和纹饰在分类中的意义进行了讨论。

Pollen Morphology of Tribe Cichorieae

The pollen morphology of 28 species including 15 genera in Cich-orieae from China was observed. According to the number of the apperatures,lhe charactersof aporium face and exine ornamentation,the pollen morphology of Cich-orieae can be divided into six types: i.e. (1)4 - coloporatej (2) tricoloporate with development aporium poate? (3) tricoloporate with small Japorium plate} (4)tri-coloporate with lots of foveolae, (5) tricoloporate with striatej and (6) tricoloporate with 3 -aporium brochates.The pollen morphological key of the genera and species have been shown in this paper based on the main characters of pollen grains.The multiple varieties of the pollen grain morphological characters, thedifferent evolutional trends of apertures and the classificational singnificance of thetypes and ornimentation of the pollen grains are discussed in the present study.