Ecological Systems and Devices Annotation << Back Assessment of Resistance of Cruciferous Plants to the Drug Mexidol in Aqueous Environment Garanina D.E., Trifonova T.A. The results of the study of the effect of the drug mexidol on cruciferous plants by biotesting in distilled and tap water in the range of its concentrations 0.01–100 mg/dm3 are presented. It was found that mexidol predominantly inhibited growth processes in seedlings of the used plants. The effects of stimulation of growth processes were observed in seedlings at low concentrations mainly in radish. The effects of mexidol on the growth processes were evaluated by the values of the plant organ biological activity (PBA) index by the ratio of root length (Lk ) and shoot height (Lp ) in the experiment to their values in the control and by the plant growth correction index (PGI). . Dose-effect correlations of mexidol exposure were studied. Keywords: mexidol, biotesting, cruciferous plants, distilled and tap water, correlation. Pp. 41-48.