Q-cluster analysis and R-cluster analysis were used to examine the 23 fruit characteristics of 31 pumelo cultivars,and 23 characteristics were analized with principal component analysis of SPSS12.0.

• 利用SPSS12.；0软件对柚类31个品种的23个果实形态学性状进行了品种的Q型聚类及其性状的R型聚类；并对23个形态学性状进行了主成分分析。