Evaluation ability of some crop species for remedation of heavy metal cadmium (Cd) in contaminated soils

In order to eavaluted the some Crop species for Remedation of Heavy metal Cadmium (Cd) In Contaminated soils under Greenhouse condition, an experiment was conducted in experimental Greenhouse of Islamic Azad University of Karaj branch in 2009-2010 year. The studies were carried out in a Factorial experiment based on a randomized complete block design (RCBD) with three replactions.The factors were Cadmium doses into soil at three levels (0, 40 and 80 mg/kg) and Crop species at three levels (Annual alfalfa (Medicago rigidula), Hairy vetch (Vicia villosa) and Canola (Barassica napus)). Results showed that Cadmium doses into soil had significant effect on all of Experiment characteristics. Whereas Crop species only had significant effect on Cadmium concentration in Shoot parts, Biochemical Biomarker Malondialdehyde (MDA) and Chlorophyll (a). Between deferent Crop species, Canola with 34.19 (mg/kg.dw) and Hairy vetch with 19.23 (mg/kg.dw) were highest and lowest Cadmium concentration in Shoot parts, respectively. Hairy vetch with 4.02 (mg/g.Fw) and Alfalfa with 3.76 (mg/g.Fw) were highest and lowest Chlorophyll (a) Contents, respectively. Olso, Canola with 37.13 (μMol/g.Fw) and Alfalfa with 33.70 (μMol/g.Fw) were highest and lowest Biochemical Biomarker Malondialdehyde (MDA) Contents, respectively. Results showed that Cadmium dose 80 (mg/kg.dw) have highest Cd concentration in Shoot parts and Malondialdehyde (MDA) Contents with 55.51 (mg/kg.dw) and 38.72 (μMol/g.Fw), respectively and Cadmium dose 0 (mg/kg.dw) have lowest their traits. With increase Cd doses into soil, content of Chlorophyll (a), (b) and (a+b) and Antioxidant Enzyme Superoxid Dismutase was decreased.