Accumulation of copper by roots, hypocotyls, cotyledons and leaves of sunflower (Helianthus annuus L.).

The effects of different concentrations of copper sulfate on the growth of and the accumulation of Cu2+ by root, hypocotyl, cotyledon and leaf growth of sunflower (Helianthus annuus L.) were examined in this study. The concentrations of copper sulfate (CuSO4 x 5H2O) used were in the range from 10(-5) to 10(-3) M.