Effects of Antimony Stress on Growth and Physiology of 10 Genotypes of Catalpa bungei

Increasing levels of antimony (Sb) pollution have been recognized as an emerging environmental problem. Phytoremediation Sb-contaminated soil is a green, economical, and effective method for restoring polluted soils. Here, we studied differences in Sb tolerance, accumulation, transport by different genotypes Catalpa bungei C. A. Mey, with the goal identifying that are suitable remediating soil. Different concentrations were applied to soil, analyzed variation growth, biomass, content organs, capacity, oxidizing substances, antioxidants, antioxidant enzyme activities 10 genotypes. Marked found plant height, ground diameter, biomass among at given concentrations. The concentration organs also varied between each genotype was proportional exposure. At 600 mg Sb/kg highest roots leaves Genotype 63, stems 8402. lowest roots, stems, Genotypes 8402, 2-8, 20-01, respectively. 1200 5-2 had 1-1 leaves. 72, 20-01. 2000 5-8, 72. observed 72 2-8. After absorption bungei, mainly accumulated upward transfer ability poor. biological factor all >1 tested concentration. Our results demonstrate could be used stabilization However, responses Based on root accumulation values, around mg/kg, 1, 5-8 suited phytoremediation; phytoremediation mg/kg; 8402 mg/kg. We first time can improved using specific tailored pollution.