The estimated antioxidant enzymes were superoxide dismutase, ascorbate peroxidase, catalase, peroxidase and polyphenol oxidase.The analyses were carried out in the field-collected samples.

• 抗氧化酶包括超氧化物歧化酶、抗坏血酸过氧化物酶、过氧化氢酶、过氧化物酶和多酚氧化酶。