Response of chlorophyll fluorescence characteristics to a water gradient in the leaves of Deyeuxia angustifoli from wetland in Sanjiang Plain

• WU Yining, 
• ZHONG Haixiu, 
• WANG Jifeng, 
• SUI Xin, 
• ZHANG Rongtao, 
• LI Jinbo, 
• WANG Liyuan, 
• ZHANG Yu, 
• WANG Shibiao, 
• XU Nan, 
• ZOU Hongfei