Biological effect of 60Co radiation on Echinochloa crusgalli and Pennisetum glaucum

The dry seeds of Echinochloa crusgalli and Pennisetum glaucum were irradiated by 60Co rays with 10, 20 and 30 Gy. The results shown that 60Co ray treatment reduced the germination rate, increased seedling height with different degree. Different chromosome aberrations observed in root tip cells, such as single micronucleus, double micronucleus, single bridge and double bridge. Micronucleus and chromosome aberrations rate were rising with the increase of 60Co ray dose. E.crusgalli was more sensitive to 60Co ray radiation than P.glaucum irradiated by.