A quantitative analysis of cytokinin using single-ion-current-monitoring

Abstract
The levels of the cytokinin 6-(o-hydroxybenzylamino)-9-β-D-ribofuranosylpurine (o-OH BAP riboside) have been measured in attached leaves of poplar (Populus x robusta Schneid) using the technique of single-ion current monitoring (SICM). The use of 6-(p-hydroxybenzylamino)-9-β-D-ribofuranosylpurine (p-OH BAP riboside) as an internal standard has enabled quantitative measurements of recovery to be made.