Abstract

Kinetin (6-furfurylamino-purine) applied via the nutrient solution (2 mg·l -1 = 9.3 μM) diminishes the uptake of potassium and calcium ions into radish seedlings ( Raphanus sativus L., cv. Saxa Treib). The uptake of magnesium is not affected by kinetin. Application of kinetin does not change the relative distribution of the ions in cotyledons, hypocotyl and root. Kinetintreated plants possess smaller cotyledons, shorter hypocotyls and shorter roots than the untreated controls. The formation of lateral roots is suppressed but more root hairs are formed. The influence of kinetin on ion uptake and translocation is discussed with respect to long term and short term effects of this phytohormone.

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