Salinity in soil increased cadmium uptake and accumulation potential of two terrestrial plants
Paper Details
Salinity in soil increased cadmium uptake and accumulation potential of two terrestrial plants
Abstract
Cadmium (Cd) is a toxic heavy metal and its coexistence with high salt (NaCl) concentrations in soil not only reduce crops yield but also compromise the quality of food. Present study was carried out to investigate the effect of salinity in soil on Cd uptake and accumulation in two terrestrial plants. The effect of Cd and salt on plants growth and biomass were also studied two plants (Ricinus communis and Sarcococca saligna) were grown in pots containing different combinations of salt NaCl (1000, 3000 and 6000 ppm) with Cd metal (50, 100 and 150 ppm). Four controls were used; one without Cd (C) and NaCl while other three having different concentrations of Cd (C1=50 ppm, C2=100ppm and C3= 150ppm). Decrease in plants growth and biomass was observed under different concentrations of Cd in soil. Application of salt further decreased the biomass and growth of the plants. Combination of 6000 ppm NaCl and 150 ppm Cd in soil demonstrated highest significant Cd accumulation in the plants. Ricinus communis showed high Cd bio-concentration value (more than one) while bio-concentration value for other plant was less than one. It was also found that Cd accumulation in Ricinus communis plants was higher than the other plant. Salt of NaCl increased Cd uptake and accumulation in different parts of the plants. Ricinus communis demonstrated Cd hyper-accumulation potential. Edible crops should not be grown on soil polluted with NaCl and Cd to avoid entrance of the toxic metal into the food chain.
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