天然半枫荷种质的UPGMA进化树（图5）显示，可将154个供试样本分为

UPGMA natural germplasm Pterospermum phylogenetic tree (Fig. 5) shows that for samples 154 can be divided into two categories according to the present, including groups I, DH, LC, LA, DY, PY, SX, QL, NJ and samples of 10 populations Z and so on. The first group included sample 7 II populations SW, RS, SC, JH, CT, YD WP, and the like. Belonging to the groups I to 4 samples and a population LC NJ drift to the second sample population groups in II, and belonging to the groups II 7 SC populations populations RS samples and three samples of I to drift as taxa. When broken down into sub-group level, Id, IIb and IIc the three subpopulations is pure, does not contain other subgroup sample, and the sample Ia and Ib contain many do not belong to this subgroup, the subgroup belonging to hybridity.

The UPGMA Evolutionary Tree (Figure 5) of natural semi-maple load species shows that 154 samples can be divided into 2 major categories, and the Category I group consists mainly of samples from 10 populations, including DH, LC, LA, DY, PY, SX, QL, NJ and Z. Class II group includes samples from seven populations, including SW, RS, SC, JH, CT, YD and WP. Four LC population samples and one NJ population sample belonging to the Category I group drifted into class II, while 7 SC population samples and 3 RS population samples belonging to Category II group also drifted into category I. When subdivided into subgroups, the three subgroups, Id, IIb, and IIc, are pure and do not contain other subgroups, while Ia and Ib contain more samples that do not belong to the subgroup and belong to the hybrid subgroup.

The UPGMA evolutionary tree (Figure 5) of the natural semimaple germplasm shows that 154 samples can be divided into 2 groups, and the first group mainly includes 10 populations such as DH, LC, La, Dy, py, SX, QL, NJ and Z. The second group includes 7 samples of SW, RS, SC, JH, CT, YD and WP. Four LC population samples and one NJ population samples belonging to group I drifted into group II, while seven SC population samples and three Rs population samples belonging to group II also drifted into group I. When it is subdivided into subgroups, the three subgroups of ID, IIb and IIC are pure and do not contain samples of other subgroups, while IA and IB contain more samples that do not belong to this subgroups and belong to hybrid subgroups.<br>