Measurement of Tissue Osmotic Pressure
Open Access
- 1 April 1980
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 65 (4) , 614-617
- https://doi.org/10.1104/pp.65.4.614
Abstract
Osmotic pressure measured by a modified pressure-volume method was compared with that of the mixed sap expressed from frozen and thawed tissue. The error in the latter technique averaged 11 and 16% (too dilute) for greenhouse and field leaves of Zea mays L. at all growth stages. These errors were not consistently calculated by a model of simple mixing between the matric and osmotic fractions, both of which decreased with plant age. Some other alternatives to the pressure-volume method are discussed which are based on a more rapid estimate of the zero turgor point.This publication has 4 references indexed in Scilit:
- Chloroplast Response to Low Leaf Water PotentialsPlant Physiology, 1973
- Matric Potentials of LeavesPlant Physiology, 1967
- Sap Pressure in Vascular PlantsScience, 1965
- HYDROSTATIC PRESSURE AND OSMOTIC POTENTIAL IN LEAVES OF MANGROVES AND SOME OTHER PLANTSProceedings of the National Academy of Sciences, 1964