Figure 2. Phylogenetic relationships among 36 populations ofR. aureum . inferred from AFLP data using a UPGMA tree (up) and
with the STRUCTURE result at K = 2 (below).
The
consensus
UPGMA tree of populations contained three main groups (Figure
2) . Group I contained all the northern, western, and northeastern slope
populations. Group II was composed of all the populations from the
southern slope and some populations on the western end of the U-shaped
valley (populations NW7–NW10). The remaining populations (populations
L1, L2, WTE1, and WTE2), which do not occupy the peak of Changbai
Mountain, clustered in group III.
An AMOVA (Table 2) attributed 68.87% of the overall genetic
variation to the among-population component. A nested AMOVA that
considered the two main genetic groups based on the Bayesian clustering
analysis with the software STRUCTURE (K = 2) attributed 12.31%
of the global variation to differences between the two clusters, 58.
78% to among-populations within clusters and 28.91% to within
populations
(ΦST
= 0.711; both at P < 0.0001).
Table
2. AMOVAs for AFLP variation surveyed in a total of 36 populations of