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.
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.
\psi0(V)
\psi0
(V)
This can then be manipulated to a linear relation which describes the ideal situation:
\psi0
\dfrac{1}V x