3.3. Petal peptidase activity
The total peptidase activity in the petals of ethylene-treated
flowers was significantly higher than those of the control flowers,
already by the end of the 24 h ethylene treatment (Fig. 2). A significant difference was also observed on days 2–5 after ethylene
treatment (Fig. 2). An increase in peptidase activity was found in
petals of ethylene-treated flowers, between day 3 and 4 (Fig. 2;
statistics not shown).