| Individual cell osmotic pressure is measured using a picolitre osmometer. |
| The concentration of the samples exceeded the capacity of the osmometer and therefore were diluted with distilled water prior to the measurement. |
| The osmolality of all prepared solutions was measured with an osmometer. |
| Osmotic potential was determined on the same leaf with a vapour pressure osmometer, after samples were frozen and thawed. |
| To obtain a direct measurement of the osmolality, 50 randomly selected samples were analyzed with an osmometer. |
| The value of the solution dripping out of the segments was measured periodically with the osmometer. |
