At low CK concentration (0.5 M) the highest
maximum quantum yield and photochemical efficiency (Fv/Fmand
Fv/F0) were caused by application of BA, however, when CKs were
applied at concentrations (CU2- and CU6-treatments) commonly
used during axillary shoot multiplication of apple, the highest Fv/Fm
and Fv/F0tended to be achieved if BAR was applied in the medium
and this was proven statistically at CU6-treatment (6.0 M)