Effect of leaf and soil contaminations on heavy metals content in spring wheat crops

Glasshouse experiments were carried out in Wagner pots containing 6 kg of s oil. The amounts were compared of Zn, Pb and Cd taken up by the crop of spr ing wheat from contamination introduced into the soil or upon leaves. The h eavy metals were labelled with the radioactive isotopes Zn-65, Pb-210 and C d-115. The experiment was performed as a series of independent analyses in four replications. The dynamics of the labelled heavy metals translocation from contaminations sprayed on the upper or bottom side of the flag leaf wa s also tested. The highest concentration of Zn-65 was found in the straw an d grain of wheat. Much higher amounts of the metals appeared to have been t aken up by the plants from leaf contamination than from the soil. The highe st dynamics of translocation from leaves to other vegetative and generative organs of plants was that of zinc.