Effects of Doubled Atmospheric CO_2 Concentration on Sugar Accumulation of Different organs in Lycium barbarum

Taking Lycium barbarum seedling as research material,and using open-top chamber to control CO2 concentration,we studied the changes of sugar content in different organs of L.barbarumto analyze the sugar accumulation under doubled atmospheric CO2 concentrations.The results followed that doubled atmospheric CO2 concentration had no significant effect on the sugar content in the seedling stem and root, but the treatment reduced the fructose content in leaf,starch and sucrose contents in fruit significantly. Moreover,the treatment increased the content of fruit starch significantly.