We divided the 35 C. hainanense samples roughly into two general
taxa, which can be further subdivided into several subgroups.
Group I mainly comprise resources
from Diaoluoshan (DLS) and Baishaling (BSL), while Wuzhishan (WZS),
Huishan (HS), Bawangling (BWL), and Jianfengling (JFL) are clustered
into group II (see Figure 2). The small subgroups clustered in group I
were further divided into two smaller subgroups, indicating a relatively
significant genetic relationship between each other in this larger
group. The aggregation of samples in the second group is relatively
chaotic, suggesting that there is less genetic relationship among the
individuals in this population. From this perspective, although there is
some geographical isolation between C. hainanense resources from
different areas, there is a direct and necessary relationship between
clustering based on genetic distance and their geographical
origin.
Figure 2 The
neighbor-joining cluster of C. hainanense in different population