Impacts of heavy metals on accumulation of essential micronutrients and chlorophylls in some vegetables

Pot experiments was conducted to observe the impact of CdCl2, CuCl2, Pb(NO3)2 and ZnCl2 on chlorophylls of Brassica juncea, Brassica rapa, Lactuca sativa, Lepidium sativum and Daucus carota. Present studies suggest that depletion of essential micronutrients like Zn and Fe; or Zn and Cu; or Fe and Mn in the plant body after heavy metal accumulation may be one of the causes for chlorophyll loss.