Fig. 2From: Enhancing chili pepper (Capsicum annuum L.) resistance and yield against powdery mildew (Leveillula taurica) with beneficial bacteriaEffect of treatment with biotreatment on polyphenol oxidase (PPO) activity of infected plants with powdery mildew. Vertical bar represents represent the standard error (n = 3). Marks on the same line and followed by the same letter(s) are not significant different at p < 0.05Back to article page