reduction rather than inhibition of the conversion of exogenous ACC
to ethylene was observed. This indicates that foliage leaves respond to
cytokinins in a different way than petals. A constant 24-hour treatment
with BA (0.1 mM) was not able to reduce ethylene production of senescing
carnation petals, while 2 mM aminoxyacetic acid, a known inhibitor of
ACC synthesis, or 10 mM propyl gailate, a free radical scavenger, decreased
ethylene production significantly.