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Toxic Effects of Chromium on Growth of some Paddy Varieties

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Chromium is a serious heavy metal and it is considered as an environmental hazard. Toxicity effects of chromium on growth and development of plants including inhibition of germination process decrease of growth and biomass of plant. The aim of this research is to study the accumulation of Cr and its effect on the Germination and growth of some paddy varieties. Thus, the varieties such as ADT-43, ADT-45, IR-50, TKM-9, CO-33, ASD-16 and CO-43 are grown in petriplates treated with different concentrations of Chromium (0, 5, 10, 25, 50, 100, and 200 mg/L). After one week exposure the seedlings were removed and morphophysiological parameters like germination percentage, seedling length and dry weight of paddy varieties and accumulation of Cr were determined. The results indicated that the concentrations more than 100 mg/L chromium cause the reduction of morphophysiological parameters in the treatments rather than control and Cr addition in the cultures caused enhancement of chromium content in roots and shoots of plant seedlings. It was also noted that accumulation of chromium in the roots was much higher than the shoots of the paddy seedlings under treatment.


International Letters of Natural Sciences (Volume 35)
M. Nagarajan and K. S. Ganesh, "Toxic Effects of Chromium on Growth of some Paddy Varieties", International Letters of Natural Sciences, Vol. 35, pp. 36-44, 2015
Online since:
March 2015

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