Methods: 8 primers were selected from 60 random primers to amplify the total DNA extracts of 17 samples with RAPD method and then the amplified were analyzed.

• 方法:从60个随机引物中筛选出8个引物,采用随机引物扩增多态DNA(RAPD)技术,对8种卷柏属植物的17份样品的DNA提取物进行扩增和分析。