Use of Allium cepa L. for assessment of toxicity of drinking water

Abstract

The purpose. To improve Allium test (biotest with onion), which is aimed at revealing toxicity of water, due to reduction of time of exposition of bulbuses and drop of labour input of testing. Methods. Temperature stimulation of body height of leaves of onion and biotesting toxicity of drinking water on standard and own procedures. Results. Stimulation of growth processes of plants which was carried out before testing, promoted increase of selfdescriptiveness of biotest (in particular, decrease by 66,67 % of duration of exposition at fixation of root formation) and had allowed to lower its labour input (owing to simplification of determination of the test-reactions of onion). Conclusions. Assessment of toxicity of drinking water with the use of onion should be used after 14-days temperature stimulation of body height of leaves with the help of test-reactions root formation (by quantity of bulbuses from root fascicle after 1-day exposition) and creation of leaves (by quantity of bulbuses with grown leaves after 2-day exposition).