During the major onset of downy mildew,The PPO and POD activities in leaves were determined in three grapevine varieties(lines),8804,Merlot and Cabernet Franc.

• 在霜霉病盛发期；对8804、梅尔诺、品丽珠3个葡萄品种(系)叶片中的PPO和POD活性变化进行了测定.