The using of Lepidium sativum for the estimation of heavy metal ions contents in a modeled water cul-ture

Abstract

Aims. Bio-testing of soil toxicity of Cherkasy technogenic areas with different intensity of motor transport and industry impact by plant indicator (Lepidium sativum L.). Methods. Soil samples were taken in summer-autumn period in ten different points of Cherkasy with different intensity of motor transport and industry impact. The content of heavy metal elements (Cu2+, Cd2+, Zn2+, Pb2+) in soil was determined in the laboratory of chemical toxicological research. Garden cress seeds were grown with roll method. Results were processed statistically with the help of “Microsoft Excel” computer program. Results. Bio-testing of soils with increased content of heavy metals was implemented by plant indicator in some technogenic areas of Cherkasy with different intensity of motor transport and industry impact. Conclusions. Combined effect of heavy metals has a significant influence upon the morphometric parameters of garden cress (Lepidium Savitum L.) above-ground and under-ground parts. Adding Humisol to soil extract mitigated the negative impact of these compounds on mentioned parameters and decreased the transition of heavy metal ions to plants.

Key words: heavy metals, morphometric parameters, bio-indexation.