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Comparative analysis of cesium and potassium uptake in onion Allium cepa L.


Cesium uptake in onion (from 0.3 mM CsCl solution traced with 137CsCl) has been examined. The highest uptake occurred at pH 4–5 and it decreased with increasing pH. The intensity of Cs translocation depended on acidity of the solution. For acidic solutions, translocation of cesium into bulbs and leaves was greater than in case of alkaline solutions, where most of the cesium remained in the roots. Addition of potassium into the solutions (millimolar K concentrations) inhibits Cs uptake. The potassium pH-influx/efflux characteristic does not coincide with the Cs uptake.

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Urban, P.Ł., Bystrzejewska-Piotrowska, G. Comparative analysis of cesium and potassium uptake in onion Allium cepa L.. Czech J Phys 53, A91–A96 (2003).

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  • Cesium
  • Vegetation Period
  • Potassium Uptake
  • Allium Cepa
  • Environmental Radioactivity