Physiological Biochemical And Morphological Aspects Of Heavy Metal Toxicity And Tolerance In Soybean Glycine max L

Abstract

Heavy metal like lead and chromium present in environment in large quantities cause a severe environmental concern.Significant risks to the environment and agriculture are posed by heavy metal contamination of the air, water, and soil as a result of increased urbanization and industrialization. Heavy metal pollution in soils can harm nearby ecosystems, groundwater, agricultural productivity, and human health because of its persistence and high toxicity. Heavy metals are accumulated in the tissues of plants growing in metal-contaminated soil, which can have a negative impact on the morphology of the plant.The present study was carried out to determine the effect of different concentrations (50ml, 100ml, 150ml and 200ml kg-1) of chromium and lead on Physiological, Biochemical And Morphologicalattributes of three Cultivars (JS:335,JS:80-21,JS:75-46) of Glycine max L.The result of the present study showed that the exposure of Glycine maxL. to Pb and Cr resulted in reduction of plant length, number of nodes, and number of leaves in all cultivars of Glycine maxL.Biochemical and enzymatic parameters were also decreased with increasing concentrations of these two heavy metals in all cultivars.The accumulation potential of these heavy metals in three cultivars was observed in the following order PbgtCr.Lead exhibited maximum toxicity as compared to Chromium in all parameters of three cultivars of Glycine max L. Moreover, chromium treated plants proved to be more tolerant as compared to Pb treated plants. The current study shows that JS:335 is more tolerant against heavy metal stress as compared to other two cultivars. newline