香茶菜属3种植物花粉形态的扫描电镜观察

应用扫描电子显微镜对香茶菜(Isodon amethystoides)、大萼香茶菜(I. macrocalyx)、显脉香茶菜(I. nervosa)8个居群的花粉进行了形态观察.结果表明,不同居群的香茶菜的花粉在形态上具有一定共同特性 ,但在外壁纹饰、大小、穴的形状上存在差异.香茶菜属不同种在花粉形态、大小、外壁纹饰、穴分布情况存在较明显的差异.这些花粉表面微观形态的差异可为品种鉴定提供依据.

SEM observation on the pollens of three species in Isodon

In order to clarify the differences among pollens of Isodon amethystoides, I. Macrocalyx and I. nervosa, the pollens of 8 different populations from these three species were observed by scanning electron microscope. The main results are as follows: Although similar on the whole, the pollens from different populations are of difference on their aperture, the size, and the ornamentation of exine, the number of the holes and the reticulations etc. There are many differences among the pollens of the plants of these three species (Isodon) on the morphology, the size, the aperture. The differences on surface of pollens provide a new evidence for specific identification of the genus.