抄録
In the present study the effects of gamma rays and X-rays were seen on the karyology of two species of Oedogonium, O. gunnii Wittr. and O. virceburgense Hirn. (Oedogoniales). Various types of chromosomal aberrations were assessed qualitatively and quantitatively. The percentages of chromosomal aberrations and percentages of nuclear degeneration were found to be directly related with the administered doses of gamma/X-rays. Gamma rays were found more effective than X-rays in bringing about a particular type of effect. O. virceburgense proved to be more resistant than O. gunnii for both the radiations.