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用ＲＡＰＤ技术鉴别了荸荠属中亲缘关系相近的两个种：Ｅｄｕｌｃｉｓ和Ｅｓｐｈａｃｅｌａｔａ。根据３个１０碱基随机引物（ＳＣ１０２３，ＳＣ１０２５和ＡＢ０１１８）获得的遗传距离值，用ＵＰＧＭＡ聚类方法构建了来自８个样点的样本的分子系统树。在分子系统树中，这８个样点的样本被分为两组：Ｅｄｕｌｃｉｓ和Ｅｓｐｈａｃｅｌａｔａ。
The RAPD technique was used to identify two closely related species of water chestnut: Edulcis and Esphacelata. Based on the genetic distance values obtained from three 10-base random primers (SC1023, SC1025 and AB0118), the molecular phylogenetic tree of eight samples was constructed by UPGMA clustering. In the molecular phylogenetic tree, samples of these 8 samples are divided into two groups: Edulcis and Esphacelata.