Abstract:

It was studied the resistance to powdery mildow (Sphaerotheca fuliginea) of 5 different strawberry cultivars. The content of soluble carbohytrate and changes in activity of specific enzymes such as PAL, POD, PPO and SOD were detected. The results showed that the content of chloroplast of the leaves and the activity of PAL, POD, PPO were increased as the resistance strenghened, the activity of SOD was reduced as the resistance strenghened, while the change in content of soluble carbohytrate was negligible. The result of variance analysis illustrated the significant difference in the content of chloroplast and the activity of PAL and PPO between different cultivars, which confirmed that the content of chloroplast and the activity of PAL, PPO could used as indicator for resistance to powdery mildow (Sphaerotheca fuliginea) of strawberry.