DIFFERENTIAL EFFECT OF SODIUM AZIDE ON THE FREQUENCY OF RADIATION-INDUCED CHROMOSOME AEERRATIONS VS THE FREQUENCY OF RADIATION-INDUCED CHLOROPHYLL, MUTATIONS IN HORDEUM VHLGARE

摘要

Moreover, a sodium Guide-induced mitotic delay was not concomitant:with a DNA synthesis delay. This differential effect of the oodiuis aside poat-irradlatioa treatment en the frequency of chrononoaa aberrations was the frequencymaterial of barley following exposure to gamma rays. One Kind of lesion similar to those leading to point imitations in procaryotec, la repairable at low energy potentials and, thus, its frequency is not affected by the sodium ezide treatment. The other kinds of leaion is associated with chromoscme breaks and its repair is affected by the presence of the enzymatic inhibitor。