The figure below shows the relationship between transpiratio…
The figure below shows the relationship between transpiration rates and temperature for two groups of peonies. One group is in a greenhouse where a misting system is used throughout the day (squares) to maintain low VPD. The other group is in a greenhouse where there is no misting system (stars), so VPD can be very high. The greenhouses are identical, except for the misting system. Use your plant anatomy, morphology, and physiology knowledge to answer: Where will peonies have the highest growth rate? Why?
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