5. Conclusion
This study provides valuable insights into the genetic diversity and population structure of the critically endangered C. hainanense within fragmented habitats in Hainan. The findings contribute to our understanding of the impact of habitat fragmentation on genetic diversity in plant populations and inform conservation efforts for other endangered plant species within fragmented ecosystems.The genetic diversity of C. hainanense was low, and the heterozygosity of the six populations of C. hainanense ranged from 10.79% to 14.55%. The average heterozygosity was 13.15%. Six C. hainanense population into the population (Diaoluoshan, Baishaling) and population (Wuzhishan, Huishan, Bawangling, Jianfengling) the two population. In addition, the genetic differentiation among C. hainanensepopulations is weak.
Author Contributions: Conceptualization, Y.K.C., M.M.N.; methodology, Y.K.C., H.L.Z., M.M.N.; software, L.Z., H.L.Z., Y.K.C., M.M.N., T.T.W., T.T.L and Q.Z.; validation, M.M.N.; formal analysis, L.Z., H.L.Z., Y.K.C., M.M.N., T.T.W., T.T.L and Q.Z.; investigation, Y.K.C., and L.Z.; resources, Y.K.C.; data curation, Y.K.C.; writing—original draft preparation, L.Z., H.L.Z., Y.K.C., M.M.N., T.T.W., T.T.L and Q.Z.; writing—review and editing, L.Z., H.L.Z., Y.K.C., M.M.N., T.T.W., T.T.L and Q.Z.; visualization, Y.K.C.; supervision, Y.K.C.; project administration, Y.K.C.; funding acquisition, Y.K.C. All authors have read and agreed to the published version of the manuscript. The data presented in the study are deposited in the Dryad repository.