The duckweed Wolffia globosa as an indicator of heavy metal pollution: Sensitivity to Cr and Cd |
| |
Authors: | Poonam Grag Prakash Chandra |
| |
Institution: | (1) Aquatic Botany Laboratory, National Botanical Research Institute, 226 001 Lucknow, India |
| |
Abstract: | The potential of Wolffia globosa, a profusely occurring rootless duckweed, was evaluated as an indicator of metal pollution in the water bodies. Plants of W. globosa were cultured in 3% Hoagland's nutrient medium which was supplemented with 0.05, 0.1, 1.0 and 2.0 mg/L of Cr and Cd. Plants showed substantial accumulation of both the metals at lowest concentrations. For example, at 0.05 ppm, the concentration factor (Cf) value for Cr was significantly higher (5616) than for Cd (1018). A high level of tolerance was shown by the plants to both Cr and Cd. The results show that the plants are sensitive to the variations in metal concentration and are capable of high metal enrichment at very low ambient concentration of the metals. This information may be useful for detecting metals in the water.NBRI Research Publication No. 401 (N.S.) |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|