Abstract
The influence of kinetin on potassium movement in decapitated seddlings of Helianthus annuus can be expressed in a biphasic dose response curve. 10 –6 to 10 –5 molar concentrations of kinetin cause a decrease of potassium concentration in the hypocotyls in contrast, 5 × 10 –5 molar concentration of kinetin causes an accumulation of potassium in any part of the hypocotyl. The potassium content of different segments of the hypocotyl are identical; no potassium gradient could be detected under the described experimental conditions.
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