The UPGMA dendrogram of 38 cultivars were divided into 3 groups at the level of the similarity coefficient of 75.5%;which have a certain correlation with their embryo type character.

• 利用UPGMA进行聚类分析，在相似性系数0.；755的水平上将38个品种分成3组，该结果与传统上以胚型为依据进行品种类群划分比较吻合。