Leaves of rice and tobacco were irradiated by g-ray

and the dynamic change of electrical resistance and ion leakage of leaf tissue was studied. It is shown that

with the radiation dose rising

the leaf tissue electrical resistance for both plants rises firstly

and when the radiation dose exceeds a certain value

the resistance declines. But this change rule is different from the rule for ion leakage. And the method of measuring electrical resistance of leaf tissue can reveal the g-ray’s influence on plant more sensitively.