论文部分内容阅读
在越冬期，随着气温的降低香蕉叶片腺苷三磷酸酶（ＡＴＰａｓｅ）活性明显提高，３月份后气温上升，活性开始下降．越冬期间超氧物岐化酶（ＳＯＤ）、过氧化氢酶（ＣＡＴ）、过氧化物酶（ＰＯＤ）活性呈下降趋势，膜脂过氧化产物ＭＤＡ含量呈上升趋势，其中台湾蕉ＳＯＤ、ＣＡＴ、ＰＯＤ活性下降幅度比柴蕉大．ＡＴＰａｓｅ水解活性和ＭＤＡ含量明显高于柴蕉，经ＰＰ３３３处理的台湾蕉，ＳＯＤ、ＣＡＴ、ＰＯＤ活性分别比对照提高６６．７７％、８６．４４％和２３７．７６％，ＡＴＰａｓｅ活性下降２４．１５％，ＭＤＡ含量下降２１．６７％，在一定程度上提高了香蕉的抗寒性
During the winter, ATPase activity of banana leaves increased significantly with the decrease of temperature, and the temperature began to rise after March, and the activity began to decrease. During winter, the activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) showed a downward trend and MDA content of membrane lipid peroxidation products showed an upward trend. Among them, SOD, CAT, Decrease in POD activity was greater than that of Chai Ju. The activity of ATPase and the content of MDA were significantly higher than those of Chai Ban, while the activity of SOD, CAT and POD increased by 66.77%, 86.44% and 237.76%, respectively, and the activity of ATPase decreased by 24.15 %, MDA content decreased by 21.67%, to a certain extent, improve the cold resistance of bananas