1-MCP对鹤望兰切花贮运期间生理代谢的影响

Effects of 1-MCP on Some Physiological Metabolic Indices of Strelizia reginae Cut Flowers in Storage and Transportation

在常温（25℃）与冷藏（12℃）下用1-MCP熏蒸鹤望兰鲜切花,对其贮运期间生理代谢的影响进行研究。结果表明,在两种温度下,1-MCP各浓度处理切花的失水率均随着贮运时间的延长而递增,并呈极显著的相关性;中等浓度处理（1.0~4.0μl/L）均极显著地抑制切花乙烯的释放、降低花瓣相对膜透性、提高次花开放率和保鲜率,显著地抑制切花失水,从而延长鹤望兰的贮运期,并以2.0μl/L的处理效果最好;低浓度（0.2μl/L）处理的各项生理代谢指标也受到不同程度的抑制,但强度较弱;高浓度（8.0μl/L）处理反而促使切花提前衰败,缩短贮运期。除高浓度处理外,冷藏贮运的保鲜效果均好于常温贮运。但无论是冷藏还是常温下,1-MCP对鹤望兰贮运保鲜的最佳处理浓度均为2.0μl/L。

During storage and transportation, the effects of 1-MCP on the physiological metabolic indices of Strelizia reginae cut flowers were investigated at ambient temperature （25℃） and cold temperature （12 ℃）. Results were as follows： at two different temperatures, with the extension of the shipping time, the weightiness rate of the cut flower increased, and was significantly related to different degree concentration of 1-MCP treantments; moderate concentration of 1-MCP （1.0-4.0 μl/L） suffocating inhibited the releasing of ethylene observably, decreased petal membrane permeability and the weightiness rate, as well as promoted open-rate of cut flowers, that caused to durable storage and transportation, especially the fumigation effect of 2.0μL/L 1-MCP was the best; all physiological metabolic indices were weakly inhibited by low concentration （0.2 μL/L） treantment; while high concentration （8.0 μL/L） suffocating promoted the decline of cut flowers, which was unfavorable to storage and transportation; besides, cold temperature was more suitable for fresh-keeping than ambient temperature. However, either at cold or ambient temperature, best fumigation concentration for Strelizia reginae cut flowers was 2.0 μL/L.