Abstract: It was studied the effect of N-lauroylethanolamine on the vase life and relative postharvest physiology indexes of cut carnation‘Red Barbara’flower. The results showed that (1) N-lauroylethanolamine supplied in vase solution at 5 μmol/L could delay the senescence of‘Red Barbara’, and the vase-life could
be prolonged for 2 more days than of the control ( P < 0.05, n = 30) ; (2) Treatment by the N-lauroylethanolamine, the cut flowers could maintain longer opening period, but have no effect on the stage of pre-opening and the stage of beginning ofwilting; (3) Exogenous treatments by N-lauroylethanolamine could decrease the level of leakage of membrane and the rate of alondialdehyde accumulation during development and senescence of petals of the cut carnations. It was discussed that the N-lauroylethanolamine induced delaying senescence of cut carnantion flowers involves in the decrease of lipid peroxidation level, thus preserving the integrity of membranes as a kind of signal lipids.

Key words: Cut carnation‘Red Barbara’flower, N-lauroylethanolamine, Vase-life, Membrane permeability, Malondialdehyde