Abstract:The effects of 1-methylcyclopropene (1-MCP) treatments on vase life and physiological changes of cut flowers of Lilium ‘Prato’ were studied. The results indicated that the respiratory pattern of ‘Prato’ lilybelonged to climacteric type. Treatmented with 30 nl L-1 1-MCP, the vase life of lily cut flower prolonged obviously by 2.15 days, full blooming increased by 0.43 days, and the flower diameter enlarged by 1.68 times (P＜0.01). 1-MCP could effectively delay the appearance of respiratory peak and moisture decompensation in cut flowers, markedly decreased respiratory rate and relative cell membrane permeability. It was suggested that 30 nl L-1 1-MCP was suitable for fresh-keeping of ‘Prato’ lily.