What are the parameters which control water potential ?

Explanation

1. The concept of water potential was introduced in 1960 by Slatyer and Taylor.
2. Water potential is potential energy of water in a system compared to pure water when both temperature and pressure are kept the same.
3. It is also a measure of how freely water molecules can move in a particular environment or system. Water potential is denoted by the Greek symbol `psi` (psi) and measured in Pascal (Pa).
4. At standard temperature the water potential of pure water is zero.
5. Addition of solute to pure water decreases the kinetic energy thereby decreasing the water potential.
6. Comparatively a solution always has low water potential than pure water . In a group of cells with different water potential a water potential gradient is generated.
7. Water will move from higher water potential to lower water potential.