我国罂粟科(Papaveraceae)植物的花粉形态

本文用光学显微镜对我国16属60种5变种罂粟科植物花粉形态进行了系统地观察研究。其中对15属27种进行了扫描观察。本科花粉形态为多类型。3沟为原始的、基本的花粉类型。根据萌发孔的形状、数目和特征,将罂粟科的花粉分为2沟,3沟,4-6沟、散沟、散孔和无萌发孔6个花粉类型。根据孢粉学资料,本文对绿绒蒿属(Meconopsis Vig.)花粉粒和其它器官的进化趋势,罂粟科在进化上的亲缘关系和本科花粉萌发孔的演化趋向等问题进行了讨论。

POLLEN MORPHOLOGY OF THE FAMILY PAPAVERACEAE IN CHINA

Pollen morphology of 16 genera, 60 species, 5 varieties in Chinese Papaveraceae were observed by means of light microscope in the present paper. Among others 15 genera, 27 species were observed by means of scanning electron microscope. Pollen morphology of the family Papaveraceae is eurypalynous. Tricolpate is the basic and primitive types. According to the shapes, numbers and characters of the apertures, the pollen grains of the family Papaveraceae are divided into the six types-tricolpate, dicolpate, 4-6 colpate, pancolpate, panporate and inaperturate. According to palynological data, the evolutional trends of pollen grains and other organs in the Meconopsis Vig., the evolu-tional relationships of the family Papaveraceae and the evolutional trends of the apertures in the family Papaveraceae were discussed.