• S. Jayakumar

Contamination of soil by heavy metals is of widespread occurrence as a result of human, agricultural and industrial activities. Among the heavy metals, lead(Pb) is a potential pollutant that readily accumulates in soils and sediments. Pb toxicity causes a range of damages to plants from germination to yield formation; however, its toxicity is both time and concentration dependent. Its exposure at high rates disturbs the plant water and nutritional relations and causes oxidative damages to plants. The present study is aimed to study the effect of different concentrations of lead on the growth, biochemical and enzymatic characters of Vigna radiata (Green gram). The results indicated that the growth characters (shoot length, root length, plant fresh weight and dry weight) as well as biochemical characters (chlorophyll, total soluble sugar and total soluble protein) of green gram gradually decreased with increasing concentration of lead. The in vivo nitrate reductase activity was found decreased with the increasing concentration of lead treated plants. On the contrary, the enzymatic characters like the activity of peroxidase and catalase were significantly increased when treated with 2mM to 10mM concentration of lead.

Lead toxicity, Vigna radiata, Growth, Biochemical, Enzymes characteristics

"Studies on the Effect of Lead Stress on the Growth and Biochemical Characteristics of Vigna radiata (L.)Wilczek", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 10, page no.a688-a693, October-2021, Available :http://www.jetir.org/papers/JETIR2110087.pdf

"Studies on the Effect of Lead Stress on the Growth and Biochemical Characteristics of Vigna radiata (L.)Wilczek", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 10, page no. ppa688-a693, October-2021, Available at : http://www.jetir.org/papers/JETIR2110087.pdf