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@ Botany One
2025-02-20 20:00:07They found a positive correlation in photosynthesis between 15℃ and 30℃. Beyond this the photosynthetic machinery breaks down, and there’s a negative correlation. However, even before this peak is reached the grapes suffer water stress, and enzymes begin working less efficiently, so the optimal temperature range for grapes is 22℃ to 27℃. Not all grapes are equal in how they deal with this stress.