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The relative photosynthetic assimilation of CO2 at transitions of temperature from 23 to 30°C, from 30 to 40°C, and from 40 to 45°C and after recovery of temperature from 45 to 23°C (n = 40). Duration of steps of heating and recovery of temperature were 10 min; ACO2 were measured at the end of each time interval. *p < 0.05 compared with 100%, Student t-test.
