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在有诱导抗病作用的基础上,以寡糖素喷施于冬枣果实后,确定枣果诱导抗病的最佳作用浓度,并测定该浓度寡糖素喷雾处理果实过氧化氢(H2O2)含量和超氧化物歧化酶(SOD)、多酚氧化酶(PPO)和苯丙氨酸解氨酶(PAL)3种抗性相关酶活性的变化,以期发现寡糖素对采后果实病害进行生物防治的可行性,探讨寡糖素诱导采后枣果抗性反应过程中相关生理生化指标之间的作用关系。结果表明,最佳诱导浓度75μg/mL寡糖素溶液对枣果诱导处理后可明显改变H2O2的代谢过程及增强防御酶PPO、PAL活性;后期活性氧清除酶SOD活性增强。
On the basis of induction of disease resistance, the best concentration of jujube induced disease resistance was determined with oligosaccharides sprayed on jujube fruit, and the content of hydrogen peroxide (H2O2) (SOD), polyphenol oxidase (PPO) and phenylalanine ammonia-lyase (PAL) were determined in order to find out that the effect of oligosaccharides on the bioaccumulation of postharvest fruit diseases The feasibility of prevention and treatment, to explore the role of oligosaccharides in the induction of post-harvest jujube fruit resistance related physiological and biochemical indicators of the relationship between. The results showed that the optimal inducing concentration of 75μg / mL oligosaccharide solution could significantly change the H2O2 metabolism and enhance the activity of PPO and PAL, and increase the SOD activity of the latter.