N - 月桂酰乙醇胺对香石竹切花瓶插效应的影响

 研究N - 月桂酰乙醇胺〔NAE (12∶0) 〕对香石竹切花‘Red Barbara’瓶插效应的影响。结果表明, 5 μmol/L NAE (12∶0) 处理使‘Red Barbara’切花瓶插寿命延长了2 d ( P < 0.05, n = 30) , 其有效作用是显著延长了开放期的持续时间, 但对开放前期及初萎后的发育衰老进程影响不大。NAE (12∶0)处理还显著降低了该切花开放期花瓣离子渗漏率的上升幅度, 延缓丙二醛积累速率。讨论了NAE (12∶0) 处理的效应, 其作为信号脂质可降低开放期花瓣的膜脂过氧化作用, 保护膜系统的完整性。

Effects of N-lauroylethanolamine Treatments on Vase-life and Membrane Permeability of Cut Carnation ‘Red Barbara’ Flowers

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 couldbe 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.