ANALYSIS OF OSMOTIC RELATIONS BY EXTENDING THE SIMPLIFIED METHOD

Abstract

The "simplified method" for measuring the net osmotic pressure of plant cells in their normal state as a part of an organ is extended to make possible a complete analysis and demonstration of osmotic relations in a healthy plant tissue. The cortex of the potato tuber is suggested as a tissue suitable for use of the method for purposes of elementary instruction. In its extended form, the method gives approximate quantitative results in the determination of osmotic quantities and actual turgor pressures. The calculations are based on Ursprung''s method for single cells, but all equations and symbols are written in terms of osmotic pressure.