Effects of Gibberellin (GA_3) on Antioxidant Enzyme Activity in Sweet Cherry Fruit at Different Developmental Stages

摘要

An experiment was conducted to study the effect of different concentrations (20, 40, 60, 80, 100mg/kg) of gibberellin (GA3) on antioxidant enzymes of 'Hongdeng' sweet cherries. The results showed that POD, CAT and SOD activity decreased during the development of sweet cherry fruit;GA3 concentration of the processing of three kinds of enzyme activity were lower than control at the time of the fruit mature, especially the 60, 80, 100 mg/kg of GA3 treatment has lower antioxidant enzyme activity, accelerate the aging of the fruit. Therefore, it is suggested that the use of GA3 should be reduced in the actual production process, especially high-concentration GA3 spraying is unfavorable to fruit.