Activitatea chitinazelor în frunzele plantelor de A. arguta L. crescute în seră și infestate cu musculiţa Albă de seră (Trialeurodes vaporariorum)

The activity of chitinases in protein extracts, separated from the male and female leaves of Actinidia arguta L., healthy and infested plants by Trialeurodes vaporariorum, was analyzed. We found that there were no significant differences in chitinase activity in both male and female leaf extracts of healthy plants. But the enzyme activity in female leaves of infested plants was twice as high as in healthy plants. While in the male leaves, less attacked by the respective pests, only a tendency towards the increase of chitinase activity was observed.