No abstract

No abstract

Effects of different concentrations (25, 50, 75 and 100%) of uranium tailings conditioned with garden soil on growth and biochemical parameters in sunflower were studied. The shoot and root length, fresh and dry mass as well as leaf area and chlorophyll contents showed significant negative correlation with the applied uranium tailing concentrations. The influence on plant growth was also measured in terms of Tolerance Index (TI) and Grade of Growth Inhibition (GGI). Yellowing of leaves was recorded in all the tailing concentrations. Soluble proteins (leaf) showed significant enhancement as the concentration of uranium tailing increased indicating a breakdown of structural insoluble proteins. Survival of sunflower plants over 100 days on higher tailing concentrations (up to 75%) showed that sunflower may be helpful in revitalization of uranium mining waste.