Phytoremediation of hexavalent chromium by Triticum aestivum L.
Journal Title: Scientia Agriculturae - Year 2015, Vol 9, Issue 1
Abstract
Chromium is considered a serious environmental pollutant due to its wide industrial use. Contamination of soil and water by chromium (Cr) is of recent concern. Toxicity of Cr to plants depends on its valence state: Cr (VI) is highly toxic and mobile whereas Cr(III) is less toxic. Present study deals with phytoremediation of chromium by wheat seedlings and results indicated that there is significant reduction of biomass of the plant with increased dosage of chromium. The study were designed to compare the seed germination and growth parameters of Triticum aestivum L on several concentration of hexavalent chromium without chelating agent (5 µm, 10 µm, 100 µm) and chromium with chelating agents like Cr+6+EDTA, Cr+6+CA and Cr+6+Zn+2 at 5 µM. Effect of hexavalent chromium with and without chelating agents were assessed in hydroponically grown seedlings. It was noted that the growth parameters like root and shoot length, root and shoot fresh weight, root and shoot dry weight and total chlorophyll content deteriorated inclination with increasing chromium concentrations without chelating agents. However average hexavalent chromium bio-availabilities were increased from shoots to roots with increase hexavalent chromium concentration at 5 µM and 10 µM. When the seedlings were grown with Cr+6+EDTA,Cr+6+CA,Cr+6+Zn+2 at 5 µM Cr+6+EDTA was demonstrated highest growth rate of root and shoot length, root and shoot fresh weight, root and shoot dry weight, chlorophyll, chromium content of root and shoot among the other chelating agents. Phytoremediation is a low cost and effective soil treatment for bioremediation has gained interest in recent years.
Authors and Affiliations
A K Nayak, R C Jena, S Jena, R Bhol, H. K Patra
Keywords
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- EP ID EP137366
- DOI 10.15192/PSCP.SA.2015.9.1.1622
- Views 106
- Downloads 0
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