两引种地紫锥菊扫描电镜的观察研究

Studies on the introduced Echinacea purpurea from two provinces by scanning electron microscope

目的:为引种紫锥菊药材鉴定提供微形态依据。方法:采用扫描电子显微镜技术对怀柔和桐城两引种地紫锥菊叶片和花粉粒进行观察和比较。结果:两引种地紫锥菊在叶片微形态上具有相似性,但花粉粒在萌发孔类型和极面观形状上差异较大,存在一定的分化。结论:不同引种地紫锥菊的花粉粒微形态特征存在差异,可为不同引种地紫锥菊的鉴别和分类提供参考依据。

Objective： To provide uhrastructure basis for identification of the Echinacea purpurea. Methods： Ultrastructural observations were carried out for leaf and pollen from two provinces by scanning electron microscope. Results ： The ultrastructures are similar in leaf but different in pollen from two provinces. Conclusion ： The exterior ultrastructure of Echinacea purpurea from two provinces showed the characteristics of diversity. The results of the study could be used for the identification of the introduced Echinacea purpurea from different provinces.