What is the difference between water potential (MPa) and relative water content (%) in plants? Also, how stomatal conductance (mmol/m2s) and canopy temperature (o C) are co-related?
Hi Sarbesh,
here is the common list of measured water characteristics in plant body:
https://botanik.boku.ac.at/pages/pv.doc
Bozena
Potential is a term for pressure of tha water. In order to absorb water from the environment the pressure inside a plant should be lower inside than outside. The water pressure varies with the amount of water that is inside a plant. This amount is called volume and the relative gap from saturated volume is called relative water content; the driver for pressure decrease is transpiration maily by stomata. The ratio of transpirationto air water pressure deficit is stomatal conductance. Once all these terms are understood it is raised a basic question since the 1940s, as who controls what? Details in http://go.microsoft.com/fwlink/?LinkId=121315 and GD Farquhar and Thomas Sharkey excellent ARPP https://www.researchgate.net/publication/232128515_Stomatal_conductance_and_photosynthesis_Annu_Rev_Plant_Physiol_Plant_Mol_Biol
Article Stomatal conductance and photosynthesis. Annu Rev Plant Phys...
Potential is a term for pressure of tha water
relative gap from saturated volume is called relative water content
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