Abstract
Nitrate reductase (NR) is the key enzyme of nitrate assimilation subjected to inhibition by excessive use of pesticides. Now a day’s pesticides are used commonly at a large scale on field. In the present study, the effect of pesticides on nitrate reductase activity has been studied by in vivo assay in Trigonella foenum-graecum. The four pesticides Confidor, Omite, Karathane, Chlorpyrifos+Cypermethrinwere used for study at various concentrations such as 25, 50,100 and 200 μl/100 ml. The application of pesticides showed decrease in activity of nitrate reductase enzyme. Out of these pesticides confidor affected the nitrate reductase activity maximum. The nitrate reductase activity in control plant was found to be 0.460U ± 0.005 which was reduced up to 0.192 ± 0.008U in presence of confidor. Even in the tissue specific assay it was seen that the leaves and stem of the plant, the NR activity was affected maximum than other par
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