M. wufengensis populations have relatively high levels of genetic
variation as an endemic species. Comparisons with gene diversity of
Magnolia officinalis (P: 49.8%; H: 0.194; Ae: 1.33) [20] and nine other
Chinese endemic or nearly endangered plant species at population
level (P: 12.30%–87.01%; H: 0.03–0.32; Ae: 1.032–1.401) detected by
ISSR markers [21], confirm high genetic diversity in M. wufengensis
populations. This results also supported by AFLP analyses of this
species (P: 95.51%; H: 0.211 ± 0.028) [22]. Moreover, gene flows of
M. wufengensis among populations (Nm: ISSR 2.42) are also higher
than of some endangered species [20,21].