Evaluation the ability of sedum plant phytoremediation under the influence of head and cadmium and treated by humic acid

The intention of this research is to check the ability of sedum Phytoremediation under the influence of lead and cadmium in a completely randomized design with three replications Treatments Included control Cadmium chloride 5 mg per liter¡Cadmium chloride 10 mg per liter¡ lead nitrate150 mg per liter¡ lead nitrate 300 mg per liter¡ cadmium chloride 5 mg per liter lead nitrate 150 mg per liter¡ cadmium chloride 5 mg per liter lead nitrate 300 mg per liter of¡ Cadmium chloride 10 mg per liter lead nitrate 150 mg per liter¡ Cadmium chloride 10 mg per liter lead nitrate 300 mg per liter¡ Humic acid 100 mg per liter Humic acid 200 mg per liter¡ Cadmium chloride 5 mg per liter Humic acid 100 mg per liter¡ Cadmium chloride 5 mg per liter Humic acid 200 mg per liter¡ Cadmium chloride 10 mg per liter Humic acid 100 mg per liter¡ Cadmium chloride 10 mg per liter Humic acid 200 mg per liter¡ lead nitrate 150 mg per liter Humic acid 100 mg per liter¡ lead nitrate 150 mg per liter Humic acid 200 mg per liter¡ lead nitrate 300 mg per liter Humic acid 100 mg per liter and lead nitrate 300 mg per liter Humic acid 200 mg per liter. Attributes evaluated as follows: Shoot dry weight; Shoot fresh weight; Full leaf chlorophyll¡ the amount of proline in Shoot; the amount of lead in Shoot¡ the amount of cadmium in Shoot and shoot activity of the enzyme superoxide dismutase. The results showed that humic acid treatment of 200 mg per liter most favorable effect on dry weight and fresh weight of the shoot¡ full leaf chlorophyll and shoot activity of the enzyme superoxide dismutase. Also the lowest level of proline and Accumulation of lead and cadmium has been observed in this treatment. Combined treatment of cadmium chloride10 mg per liter lead nitrate300 mg per liter had the most depressing effect upon Treated plants and the highest level of proline and Accumulation of lead and cadmium has been observed in this treatment.