Effects of Light Quality on the Growth and Content of Active Ingredients of Tetrastigma hemsleyanum

Objective The growth and content of active constituents of Tetrastigma hemsleyanum under different light quality treatments were studied to determine the optimum light quality conditions for the growth of T. hemsleyanum.

Method Two-year-old T. hemsleyanum was used as the material, and the light quality treatment was carried out with different color filter membranes (red, yellow, green, blue, and white light). The leaf shape index, physiological index, biomass and total flavonoid content in the tuber of T. hemsleyanum were determined.

Result The result suggests that the red light treatments do have impact on the growth and active ingredients of T. hemsleyanum. Red light treatment promotes both the growth and active ingredients of T. hemsleyanum while the other treatments promote just one aspect of them.

Conclusion The yield and quality of T. hemsleyanum under red light treatment are better. Red light can be used to increase the yield and active ingredient content in the artificial cultivation of T. hemsleyanum.