The absorption of potassium and several organic compounds by barley roots : Effect of siduron

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概要

• 論文の詳細を見る

• Absorption of ^<42>K by excised roots of barley (Hordeum vulgare L.) grown in O or 5 ppm siduron (1-(2-methylcyclohexyl)-3-phenylurea) was a linear function of time for at least 60 minutes with transport being unidirectional. Absorption of siduron was a function of the external concentration to the limits of its solubility (0.09mM). However, the siduron-^<14>C absorbed by roots grown in either O or 5 ppm siduron was in a readily exchangeable form and desorption for 4 hr exchanged 80% of the label. Glucose-^<14>C, adenine-8-^<14>C and leucine-^<14>C were actively absorbed with 70 to 85% of the label being absorbed in 24 hr. Although roots grown in siduron absorbed less ^<42>K, glucose-^<14>C, adenine-^<14>C and siduron-^<14>C, and more leucine-^<14>C than similar roots grown in water culture, it is probable that these differences were not large enough to account for the noted reduction (60%) in root growth.

• 日本植物生理学会の論文

著者

• Splittstoesser Walter

  Department Of Horticuhure University Of Lllinois

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