Phenotypic Observation of Canada Asiatica in Different Invasive Areas of Yunnan
This study aimed to clarify the ecological adaptability of Solidago canadensis L.in 11 different occurrence areas in Yunnan Province.The plant traits and differences were observed under common garden conditions,respectively.The results showed that the further growth and reproduction characteristics of Solidago canadensis L.occurring in different invasive regions differed significantly under common garden conditions,in which the variation of root sprouting trait index reached 54.23％,and the variation of stem diameter,leaf width and leaf shape indexes ranged from 23.63％-26.31％.Among the biomass allocation ratios,the plant with the highest percentage of flower biomass allocation was from Qiubei County of Wenshan Prefecture,the plant with the highest percentage of leaf biomass allocation was from Xishan District of Kunming,the plant with the highest percentage of culm biomass allocation was from Panlong District of Kunming,and the plant with the highest percentage of root biomass allocation was also from Panlong District of Kunming.In the further determination of the four enzyme activities of POD,SOD,CAT and MDA,the plant populations from 11 different invasive regions and habitats showed significant differences,among which those from Qiubei point and Panlong point were the most prominent.In the cluster analysis,it was found that the leaves in the plant traits showed certain variability,but in the bias correlation analysis of climatic factors,the climatic factors in the original place had less influence on Solidago canadensis L.The results of the study showed that the plant traits of Solidago canadensis L.were basically stable and consistent,but the phenotypes in different invasive areas had some differences and plasticity due to the different environmental conditions.The results of this study lay an important scientific foundation for clarifying the ecological adaptability of the Solidago canadensis L.in Yunnan Province,and provide a scientific basis for early warning,monitoring and preventing the expansion of this invasive plant.
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