Micronucleus Induction in Vicia Faba Roots

Summary

Micronucleus indication in Vicia faba roots has been evaluated after irradiation with ⁶⁰Co γ-rays. The dependence of the damage on dose, dose rate, fractionation, and oxygen has been studied. The best fit to the experimental data in the dose region between 7 and 190 cGy is represented, for single-dose exposures, by a linear + quadratic relationship. In the low-dose region, between 7 and 20 cGy, where the linear dose dependence is dominant, no dose-rate, fractionation, or oxygen effect could be observed. These effects were, however, present in the high-dose region, where the quadratic dependence is dominant.

• Vicia faba
• dose rate
• fractionation
• oxygen
• micronuclei