Figure 1. Cluster tree of five pear cultivars during fruit development and maturation stages.

HS: Hosui, YL: Yali, KRLXL: Kuerlexiangli, NG: Nanguo, RC: Red Clapp’s Favorite mutant (‘Starkrimson’), 1–7: seven fruit developmental stages. Spearman correlation tree has two major groups, I and II and four subgroups, A–D.