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Effect of different photoperiod treatments on photosynthetic parameters of ‘Huangkui’. Effect of different photoperiod treatments on stomatal conductance (A), intercellular CO2 concentration (B), net photosynthetic rate (C), and transpiration rate (D) of ‘Huangkui’; Note: Different lowercase letters on the top of the bar chart indicate significant differences at the level of p < 0.05.
