Pb Accumulative Characteristics of Several Lead Accumulation of Ornamental Asteraceae

To study the environmental Pb toxicity,decontamination and beautification,apot-experiment was conducted with three ornamental flowering plants to determine their Pb-absorption properties.The results showed that Helianthus annuus L.had a greater capability of accumulating Pb in shoots and roots than either Zinnia elegans Jacq or Gozania splendens.H.annuus L.andZ.elegans Jacq exhibited strong endurance to high concentration of Pb,and were considered to be potentially applicable for soil decontamination and proper maintenance.