Abstract:

Platanus acerifolia, a roadside tree on both sides of Julu road in Jing’an District and Huangyang road in Pudong New Area of Shanghai, was selected as the research object. The effect of six chemicals, included ED, tiaofuranate (USA), Hangzhou fruit control agent, Guoguang Xubizhi, Feixu inhibitor and Hechang, on the chemical regulation of cones of Platanus acerifolia were studied, which could provide theoretical and technical support for the prevention and control of P. acerifolia cone hairs. The results showed that the water content of P. acerifolia cones decreased after chemical treatment, the content of soluble sugar increased, and the activity of SOD and POD increased. The chemical agents could lead to light leaf color of Platanus acerifolia. The normal metabolism of cones was affected, and the transformation of carbohydrate was blocked, resulting in the accumulation of soluble sugar. The water content of cones decreased, indicating that the growth of the cones was inhibited and the cone hairs were reduced, thus the effect of controlling the hairs of the cones was achieved. Among the six chemical agents in this experiment, Hechang and ED agents had the best prevention and control effects.

Key words: Platanus acerifolia, the chemical adjustment and control, cone, physiology and biochemistry, morphology, roadside tree