Effect of Water Logging and Drainage on Growth and Physiological Properties of Zelkova serrata

Experiments were conducted on water logging on 2-year container Zelkova serrata seedlings during August 1st of 205 and September 4th. Seedlings were treated by root flooding（RF）, semi-submerged flooding（SF）and almost total flooding（AF）, control (normal treatment) and after drainage. Determinations were implemented on growth and physiological properties at different stage of treatment. The results showed that seedlings treated by water logging had leaves fallen, but survived. Height and ground diameter growth of seedlings treated by water logging was smaller than the control, and chlorophyll content as well. The activity of superoxide dismutase（SOD）and peroxidase（POD）in leaves of seedlings treated by water logging decreased at first and then increased. The content of malondialdehyde（MDA）had an opposite trend. The content of soluble sugar and protein showed a trend of decreasing. Physiological properties of seedling 14 days after drainage had negative effect on water logging, it concluded that Z. serrata seedlings had recovery capability under mild and moderate water logging.