Effect of cadmium ions and ultraviolet (UV-C) radiation on elongation growth of maize coleoptile segments and pH changes in their incubation medium

It was found that the treatment of coleoptile segments with cadmium ions as well as with UV-C radiation inhibited both, their elongation growth and acidification of incubation medium. The procedure of cadmium introduction had the substantial influence on inhibition degree of coleoptile segments growth. It was confirmed by the tests of cadmium accumulation in coleoptile segments. The results did not show any additivity of the effects caused by both stress factors (cadmium ions and UV-C radiation). It was also found that the effect of UV-C radiation depended on the level of cadmium in tissue