Welcome to Chinese Journal of Applied Ecology! Today is Share:

Chinese Journal of Applied Ecology ›› 2000, Vol. ›› Issue (6): 881-884.

Previous Articles     Next Articles

Effect of elevated CO2 concentration on photosynthesis and antioxidative enzyme activities of wheat plant grown under drought condition

CHEN Xiong1, WU Dongxiu1, WANG Genxuan1, RRN Hongxu2   

  1. 1. State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou 730000;
    2. Laboratory of Ice Core and Cold Region Environment, Cold and Arid Regions Envi ron mental and Engi neeri ng Research Instit ute, Chnese A cademy of Sciences, Lanzhou 730000
  • Received:1999-10-29 Revised:2000-03-16 Online:2000-12-25

Abstract: The photosynthesis and antioxidative enzyme activities of wheat plants grown in two open top chambers with CO2 concentrations of 350μmol·mol-1 and 700μmol·mol-1 were examined under drought stress.The result showed that elevated CO2 concentration obviously enhanced the photosynthesis,stomatal resistance and water use efficiency,but decreased the transpiration of wheat.Doubled CO2 concentration significantly increased the activities of CAT,POD and SOD,which enhanced the abilities of antioxidative defence and drought tolerance.