a slight trendp < 0.05
There was a slight trend towards lower g s and Tr in plants at elevated CO 2 in May and June; however, elevated CO 2 did not affect both physiological parameters at p < 0.05 in these two months.
There was a slight trend towards lower g s and Tr in plants at elevated CO 2 in May and June; however, elevated CO 2 did not affect both physiological parameters at p < 0.05 in these two months.
There was a clear trend towards greater biomass accumulation at eCO 2 , although the results did not show statistical significance for this parameter.