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Effects of high temperatures on CO2 assimilation rate (A), the apparent quantum yield (B), and the carboxylation efficiency (C) of photosynthesis in wild-type plants and transgenic plants. Seedlings grown at 25°C in the greenhouse were exposed to different temperatures, 25°C, 30°C, 35°C, 40°C, or 45°C, in the chambers for 2 h in the dark and then the photosynthetic gas exchange parameters were determined. The values are mean ± se of three independent experiments.
