Comparison of Photosynthetic Functions and Antioxidase System of Apple Leaves between Two Orchard Ground Managements
In order to explore the physiological mechanism of photosynthetic decline of apple leaves under different orchard ground managements,the study had compared the changes of net photosynthetic rate (Pn),the contents of chlorophyll,soluble protein,superoxide anion (O2ˉ),hydrogen peroxide (H2O2) and malondialdehyde (MDA),and the activity of superoxide dismutase (SOD) and peroxidase (POD) in the process of leaf senescence under two kinds of orchard managements,i.e.natural grassing and clean cultivation,using 5 year old Hanfu apple as material The results showed that natural grassing treatment kept the contents of O2-,n2O2 and MDA at a relatively low level by enhancing the activities of SOD and POD during leaf senescence.Comparing with clean cultivation treatment,natural grassing treatment delayed leaf senescence and improved photosynthetic functions,through reducing the degradation rate of chlorophyll and soluble protein.In conclusion,natural grassing management could delay leaf senescence and keep higher photosynthetic functions of Hanfu apple leaves than that of clean cultivation management.
Natural grassing Hanfu apple Photosynthetic functions ROS Antioxidant enzyme
Li Fangdong Lyu Deguo Dou Yanxin Xu Tianwei
College of Horticulture/Key Laboratory for Northern Fruit Trees Cultivation and Physiology Ecology of Shenyang City,Shenyang Agricultural University
国际会议
The Third Conference on Horticulture Science and Technology (2012第三届园艺科学与技术学术会议(CHST2012))
北京
英文
212-215
2012-11-24（万方平台首次上网日期，不代表论文的发表时间）