Abstract:
In April 2017, 3-year Viburnum japonicum seedlings were potted in Hangzhou, Zhejiang province and then were treated with full light, 30% shading, 60% shading and 85% shading. Growth and physiochemical properties were determined 30, 60 and 90 days later. The results showed that specific leaf mass declined with light intensity increasing. Relative growth rate of seedlings treated by 30% and 60% shading was significantly higher. Growth of V. japonicum seedlings with full light was seriously inhibited. Anthocyanin content in leaf decreased with increasing of shade intensity, and shading treatments could reduce MDA content in leaves. On the 60th and 90th day, MDA content of seedlings was the lowest under 60% shading. The content of soluble sugar in leaves was the highest under full light, and on the 90th day, it was the lowest under 60% shading. The content of soluble protein increased with the duration of treatment. SOD activity decreased with the increase of shading intensity. POD activity of seedlings treated by 30% shading was lower than that by 30% and 85% of shading.