中国栎属植物花粉形态及其系统学意义

从系统学分类学的角度出发 ,对国产栎属 31个种的花粉进行了光学显微镜和扫描电镜观察。研究结果表明栎属的花粉萌发孔对该属的系统与分类无太大的参考价值 ;但栎属的花粉纹饰有颗粒状、聚颗粒状两种主要类型 ,具有重要的系统学分类学价值。花粉形态的研究结果支持将栎属植物划分为常绿类与落叶类的观点 ;栎属巴东栎组植物的花粉纹饰在种间存在分化 ,花粉形态的研究结果支持将巴东栎组至少划分为两个不同类群的观点 ;在佐以其他证据的情况下 ,栎属植物的花粉纹饰还具有重要的分类学价值

Pollen morphology and its systematic significance of the Quercus from China

The taxonomic position of Quercus is long in dispute. The present paper describes the pollen morphology of 31 species in the Quercus from China. The aperture of pollen grains in Quercus has less taxonomic significance. Sculpture types of the Quercus were observed as the categories of granulate and aggregate granulate. The patterns of pollen sculpture have important taxonomic significance. The result of the pollen morphology tends to support the opinion that Quercus was divided into evergreen members and deciduous members, and support the treatment of the section Englerinae into two or three groups. With other evidence, sculpture types of the Quercuss have some taxonomic significance.