Experiments with a Hungarian potato variety ''Kisvardai Rozsa'' confir
med that the impedance ratio Z50K/Z5K suggested by Japanese workers si
gnificantly depends on the radiation dose applied to inhibit sprouting
. However, the sensitivity and statistical reliability of this impedan
ce ratio for identification of a radiation treatment was relatively po
or. The ratio of phase angles was also tested at several frequencies a
nd the ratio phi15K/phi80K provided statistically higher probability,
and at least 3-times greater sensitivity as a response to the absorbed
radiation dose than the previously recommended parameter.