OBJECTIVE: To investigate the species resources of Changium smyrnioides. METHOD: Nine habitat populations of C. smyrnioides, included with population environment, time limit, morphological characters and so on were investigated. The phylogenetic relationship of different habitat populations of C. smyrnioides was studied by isoenzyme electrophoretic analysis of the EST. RESULT: The results showed that wild resources of C. smyrnioides were endangered. Seed germinating rate of cultivated plant was significantly higher than that of wild seed, but polysaccharide content in the root of wild species was significantly higher than that of cultivated plant. There existed a geographic phylogenetic relationship among different habitat populations. CONCLUSION: The wild C. smyrnioides resources are endangered. The wild C. smyrnioides around Nanjing city are better than the others, it could be used for the further selecting of species resources.
OBJECTIVE: To investigate the species resources of Changium smyrnioides. METHOD: Nine habitat populations of C. smyrnioides, included with population environment, time limit, morphological characters and so on were investigated. The phylogenetic relationship of different habitat populations of C. smyrnioides was studied by isoenzyme electrophoretic analysis of the EST. RESULT: The results showed that wild resources of C. smyrnioides were endangered. Seed germinating rate of cultivated plant was significantly higher than that of wild seed, but polysaccharide content in the root of wild species was significantly higher than that of cultivated plant. There existed a geographic phylogenetic relationship among different habitat populations. CONCLUSION: The wild C. smyrnioides resources are endangered. The wild C. smyrnioides around Nanjing city are better than the others, it could be used for the further selecting of species resources.