山东菊科莴苣亚族植物花粉形态研究

Pollen Morphology of Lactucinae Subtribe (Compositae) in Shandong

应用光镜和扫描电镜对山东菊科莴苣亚族11属18种、1变种植物的花粉形态进行了观察研究.结果表明：莴苣亚族植物的花粉呈球形,具3～4沟孔,花粉表面具有网状纹饰,粗网眼15～21个,网脊上具1行刺,属于蒲公英（Taraxacum）型,与已报道的莴苣亚族其它属种的花粉形态相一致.通过莴苣亚族属间花粉形态的比较,认为花粉形态在属间分类上意义不大.

The pollen morphologies of one variety and 18 species belonging to 11 genera of Lactucinae Subtribe in Shandong were examined by light microscopy and scanning electron microscopy. The results showed that the pollens of Lactucinae Subtribe appeared globular and they had 3-5 colporates and reticulate ornamentations on their surface whose broehi ranged within 15-21 in number and on which there was a line of spinules, and thus belong to taraxacum type,which are consistent with the reports about the pollens of other species and genera of Lactucinae Subtribe,the comparison between the pollen morphologies of Lactucinae Subtribe indicated that pollen morphology was not of high significance in genus classification.