Change in the activity of catalase and the induction of chlorophyll fluorescence in plants and varieties under stress and antistress action

摘要

Laboratory and field experiments revealed an authentic correlation between the change in the activity of catalase and the induction of variable fluorescence of chlorophyll in leaves. Both parameters reflect adequately the phenotype alterations in thestate of a plant with stress and antistress action. It is shown that varieties having a low native activity of their protective system are more labile and have a stronger reaction to the exogenic stimulation of their antioxidizing potential.