Objective: A systematical investigation on the distribution of wild germplasm of Regonia fimbristipula in Dinghu District, Zhaoqing City, Guangdong Province was conducted at 8 sites.
Methods: Field quadrat survey method was carried out.
Results: Begonia fimbristipula had obvious phenotypical plasticity showing three phenotypes with red, green and bicolor leaf, respectively. Its populations lived in the ecological environment of rock. The growth and building of Begonia fimbristipula population were mutually influenced by many ecological factors such as natural habitat, slope-exposure, soil thickness, sunlight, air humidity as well as soil physical and chemical properties.
Conclusion: Living environment vulnerability and human activities are the main reason causing sharp decrease of wild resources of Begonia fimbristipula. Evaluation on regional distribution of wild Begonia fimbristipula and its protection and use of the rationalization have important value.
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