Influences of Light Environment on Flowering,Growth and Pho-tosynthetic Characteristics of Houttuynia cordata
The influencing mechanisms of light environment on the growth and flowering of Houttuynia cor-data were studied to give full play to the ornamental value of this plant and enrich the application of garden plants.The quadrat sampling method was employed to determine the sampling sites of H.cordata in the same forest with different light environments including forest edge(LY),sparse forest(SL),and dense for-est(ML).The flowering,growth and photosynthetic indicators of H.cordata were measured,and the influ-ences of different light environments on these indicators were studied.The results showed that the flowering number and the population flowering period were the highest in the LY group,moderate in the SL group,and lowest in the ML group.Other growth and photosynthetic indicators except specific leaf area and moisture content of H.cordata were positively correlated with light intensity under different light environments,and some of the correlations were statistically significant.In summary,LY is the best light environment for the flowering and growth of H.cordata.Exploring the ornamental value of H.cordata facilitates the application of this plant in landscape gardening and enriches the plants with both medicinal and edible values for garden-ing application in Guangxi.