PPO is a key enzyme for enzymatic browning in many fruits (Mayer, 1987). Our results indicated that PPO is directly related to the development of blackheart symptoms, both temporally and spatially.
PPO is a key enzyme forenzymatic browning in many fruits (Mayer, 1987). Ourresults indicated that PPO is directly related to thedevelopment of blackheart symptoms, both temporallyand spatially.