THE TOXIC EFFECT OF AN ANIONIC DETERGENT ON A ROOTED FLOATING MACROPHYTELEKHA NAIR, MADHU GOPAL AND THOMAS A.P.
In this study the toxic effect of a commonly used anionic synthetic detergent on the growth and biochemical characteristics of Nymphoides indica, a rooted floating macrophyte was evaluated for different concentrations. The effect was studied for a period of one month. The growth characteristics of the plant were assessed in terms of specific leaf area (SLA). Biochemical analysis was done for total chlorophyll content, total protein, membrane lipid peroxidation and electrolyte leakage from tissues. Chlorophyll Stability Index (CSI) and percent Membrane Injury (MI %) were also assessed. The results revealed that the anionic detergent inflicted adverse effects on all the parameters considered. Lipid peroxidation and electrolyte leakage serve as more relevant parameters for detergent induced stress.