Soils and accumulated materials are resources of heavy metals, which are available for absorbance by plants. One of the potential methods for eliminating heavy metals from polluted places includes usage of resistance creature to metals which are able to accumulate and absorb high amount of material. Present study was carried out in a greenhouse format in completely accidental plots with 4 times repetition and 2 plants of Hordeum vulgare and Brassica napus. This experiment was done in 2011 in Islamic Azad University, Karaj branch. Variance analysis results showed significant effect of pb levels, growth promoters bacteria and interaction effects of them on capabilities of Superoxide dismutase (SOD), Catalase (CAT) and Glutathione peroxidase (GPX) enzymes (P<0.01).
