我国旋花科植物花粉形态的研究

本文用光学显微镜和扫描电镜对16属46种2变种的旋花科植物花粉形态进行了观察。本科的花粉为多类型。3沟为基本的萌发孔类型。根据萌发孔的形状、位置和数目,本科花粉可分为3沟、4-11沟、散沟和散孔4个类型。根据孢粉学资料、本文对菟丝子属(Cuscuta)在旋花科中的分类位置及其本科萌发孔的演化趋向等问题进行了讨论。

STUDY ON THE POLLEN MORPHOLOGY OF THE FAMILY CONVOLVULACEAE OF CHINA

This paper deals with the pollen grains of 16 genera, 46 species, 2 variety in Chinese Convolvulaceae. Acomparative stu-dy on the pollen grains was carried out by means of scanning electron microscope and light microscope. The pollen grains of the family Convolvulaceae are eurypa-lynous. Tricolpate is the basic type. According to the shape, position and number of the aper-ture, the pollen grains are divided into the four types-tricol-pate, 4-11 colpate, pancolpate and panporate. On the basis of palynological data were discussed taxonomical position of the genus Cuscuta among the family Convolvulacaee and evolutionaltrend of the aperture of this family.