中国马鞭草科植物的花粉形态

本文对我国18属91种3变种马鞭草科(Verbenaceae)植物的花粉形态进行了详细地观察研究。其中对15属27种进行了扫描电镜观察。本科为花粉多类型的科之一。根据萌发孔的数目、特征和纹饰特点,本文将马鞭草科分为9个花粉类型:1.具疣3沟花粉类型;2.具刺3沟花粉类型;3.具细网8沟花粉类型;4.具模糊颗粒-细网3沟花粉类型;5.具网3沟花粉类型;6.具散沟(6-8条)花粉类型;7.具3孔花粉类型;3.具细网3沟花粉类型,4.具模糊颗粒一细网3沟花粉类型,5.具网3沟花粉类型,6.具散沟(6-8条)花粉类型,7.具3孔花粉类型,8.具3孔沟花粉类型,9.具3(4)孔沟花粉类型。

POLLEN MORPHOLOGY OF THE FAMILY VERBENACEAE IN CHINA

The pollen morphology of 91 species and 3 varieties inclu-ding 18 genera in Verbenaceae from China was observed by me-ans of optical microscope, and in which 27 species observed by means of scanning electron microscope. The pollen morphology of the family Verbenaceae is one of the eurypalynous. Accordingto the numbers and characters of the apertures and exine orna-mentation the pollen morphology of the Verbenaceae can be divided into the nine types:1. the tricolpate with verrucae; 2.the tricolpate with vestigial spines; 3. the tricolpate with fin-ely-reticulate; 4. the tricolpate with granulate-finely reticulate;5. the tricolpate with the reticulate; 6. the pancolpate(6-8);7. the triporatel; 8. the tricolporate; 9. the 3(4) colporate. The tricolpate is the basic and primitive type. The pollen morphological key of the genera has been shown in this paper based on the pollen grain characters. The varieties of the pollen grain morphological characters, the different evolutional trends of the apertures and the close affinity between Verbenaceae and Labiatae are also discussed in the present study.