An Anomaly in Potassium Accumulation by Barley Roots
Open Access
- 1 April 1970
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 45 (4) , 411-414
- https://doi.org/10.1104/pp.45.4.411
Abstract
When excised barley roots were incubated in 0.01 to 0.1 mm KCl solutions containing 0.2 mm CaSO4, there was a peak in the K+ accumulation against concentration curve at 0.02 to 0.04 mm KCl. The peak in the K+ accumulation curve was shifted to lower K+ concentrations when Ca2+ concentration was decreased and to higher K+ concentrations when Ca2+ concentration was increased. Increasing Ca2+ concentration in the treatment solution was observed to be stimulatory, inhibitory, or neutral depending on the K+ concentration.Keywords
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