In ecology, pressure-volume curves describe the relationship between total water potential (Ψt) and relative water content (R) of living organisms.
These values are widely used in research on plant-water relations and provide valuable information on the turgor, osmotic and elastic properties of plant tissues.
[1][2][3][4] According to the Boyle–v'ant Hoff Relation, the product of osmotic potential and volume of solution should be a constant for any given amount of osmotically active solutes in an ideal osmotic system.
is volume of solution.
This can then be manipulated to a linear relation which describes the ideal situation: