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Phytoremediation of Commonly used Metals (Cu and Zn) from Soil by Calendula officinalis (I)

Author Affiliations

  • 1 Department of Biotechnology, Madhav Institute of Technology and Science Gwalior, M.P., 474005, INDIA

Int. Res. J. Environment Sci., Volume 4, Issue (1), Pages 52-58, January,22 (2015)

Abstract

Phytoremediation is an emerging technology for removing heavy metals contamination from polluted sites. It is cost effective and has exquisite advantages and long term applicability. The present study suggests about the accumulation ability, mobility and plant growth response on exposure to heavy metals in soil. Experiments were carried out to find the accumulation ability of Cu and Zn in the Calendula officinalis. The selected metals were mixed at various concentrations ranging from 50, 100, 150, 200 and 250 mg/Kg for Cu and 150, 300, 450 and 600 mg/Kg for Zn separately in soil. The results showed that plants grown in Cu supplemented soil had shorter shoot and root length as compared to plants grown in control condition. This may be due to accumulation of Cu in shoot and root of Calendula officinalis. In comparison to Cu concentration accumulation, effect of Zn (150, 300, 450 and 600 mg/Kg) in soil reduced the length of shoots and roots of Calendula officinalis and accumulation potential of Zn was more. The results revealed that as the concentration of both metals (Cu and Zn) were increased in the soil; the overall length of Calendula officinalis decreased due to potential accumulation ability in shoot and root.

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