Please note that there might be no HSPs accumulation below temperature of 32-34C. HSPs are induced when the plant experience temperatures higher than the growing temperature with around 10C. So, the HSPs induction temperatures for plants grown at 18C differ from these for plants grown at 24C.Another very effective parameter is the humidity. When using low humidity the plant has a chance to cool down through transpiration. In this case the HSPs induction requires higher temperatures.
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