Effects of CO_(2) enrichment and plant growth regulators on photosynthesis in strawberry

The effects of CO_(2) enrichment and fruit application of NAA, GA_(3) and CPPU on photosynthesis were investigated in strawberry. Raising CO_(2) concentration from 380 muL/L to 760 muL/L increased net photosynthetic rate by 78.8%, transpiration rate by 81.7%, and stomata conductance by 62.0%, respectively. NAA, GA_(3) and CPPU were significantly effective in increasing net photosynthetic rate, with close correlations between net photosynthetic rate and intracellular CO_(2), stomata conductance and transpiration rate respectively.