不同叶型白木香叶片生理生化特性研究

Study on the Physiological and Biochemical Characteristics of Different Types of Leaves of Aquilaria sinensis

目的:对不同叶型白木香叶片的生理生化特性进行研究。方法:通过实验对不同叶型白木香叶片的6种生理生化指标进行了研究对比,这些指标包括:丙二醛(MDA)含量、可溶性糖含量、可溶性蛋白质含量、过氧化物酶(POD)活性、过氧化氢酶(CAT)活性、超氧化歧化酶(SOD)活性。结果:不同叶型白木香的POD、CAT、SOD无显著差异;POD、CAT、SOD对清理氧化产物MDA有协调作用;不同叶型白木香可溶性蛋白与MDA有负相关性;不同叶型白木香的可溶性糖含量有显著差异。结论:不同叶型白木香叶片生长活力:小叶型>大叶型、过渡叶型>椭圆叶型。

Objective：To study the physiological and biochemical characteristics of different types of leaves of Aquilaria sinensis.Methods： Six types of leaves′ physiological and biochemical indexes were studied and analysed,these indicators included： malondialdehyde（MDA）,soluble sugar content,soluble protein content,peroxidase activity（POD）,catalase activity（CAT）and superoxide dismutase activity（SOD）.Results： POD,CAT,SOD had no significant difference;POD,CAT,and SOD had a coordinating role on cleaning-up oxidation products MDA;The soluble protein contents of different types of leaves was negative corelatad with the centent of MDA;The contents of soluble sugar among them were signifiant different.Conclusion： Growth activity sequence of different types of Aquilaria sinensis is as follows： lobular type large-leaved type,transitional leaf type elliptical leaf type.