The aim of this study is to evaluate the tolerance of Ficus virens Aiton to soil contamination by lead (Pb) and cadmium (Cd) in pot experiment, in order to provide the basis for the research of the potential for phytoremediation of Pb and Cd pollution. With Ficus virens Aiton as the experimental material, and contaminated soil was treated by Pb and Cd in five concentrations respectively. The plant behavior was assessed by the changes of its physiological activity. Results show that when the concentrations of Pb and Cd was 250, 5mg/kg, the plant height, net diameter, soluble sugar content and SOD activity of Ficus virens Aiton had no significant effect. The stress concentrations of Pb and Cd which was 250, 500 and 5,10 mg/kg increased photosynthetic pigment of Ficus virens Aiton . And the malondialdehyde content of experimental group was all higher than control. The damage to the Ficus virens Aiton could reach up to their maximum when concentrations of Pb and Cd was 900, 30mg/kg. It is indicated that the critical concentrations of Pb and Cd inhibited the growth of Ficus virens Aiton was 500, 10mg/kg, and low stress could promote the growth of Ficus virens Aiton. Compared with Pb stress, the tolerance to Cd was better.
Journal of Southwest China Normal University(Natural Science)
Ficus virens Aiton