| Abstrakt: |
The rate of carbon dioxide evolution, respiration quotient, and the rate of liberation of heat were determined on the 3rd day of germination of wheat seeds. The seeds were germinated with pure water (control) or they were transferred for a 5-hour period to a solution of dinitrophenol, sodium arsenate, sodium phosphate or indole-3-acetic acid. The heat liberated was compared with the total energy released in respiratory processes of the seedlings, calculated from the gas exchange measurements. The amount of heat liberated for 1mmof carbon dioxide evolved and for 1mmof oxygen absorbed was definitely changed in the presence of the compounds used. However, the ratio of heat liberated to the total energy released in respiration of the seedlings changed only slightly. |
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