Abstract:
The study was carried out to investigate the potential
of Talinum triangulare (Ceylon Spinach) to remediate
Cr contaminated soil under greenhouse conditions. In
primary studies, T. triangulare showed significant
resistance to Cr toxicity, however the amount of metal
extracted was not sufficient enough to consider it as a
potential phyto-extractor. Further pot experiments
were conducted to find out the effect on Cr
accumulation using EDTA as chelant under 2.0, 4.0,
6.0, 8.0 and 10.0 mmol kg-1 chelator concentrations.
EDTA had virtually a significant effect on uptake of the
metals by the plant and elevated Cr concentrations in
plant organs as compared with the control. Optimum
phytoextraction was observed when 2.0 mmol kg−1
EDTA was added with relatively high biomass
production of plant species. EDTA modifies the uptake
and the translocation of Cr by plants but the results
concerning the uptake and the accumulation depend on
the available Cr concentration in soil.
