弱光和1-MCP处理对盆栽月季贮运品质的影响

Effects of weak light and 1-MCP treatments on storage qualities of Rosa chinensis

模拟贮运环境下,以正常光照和黑暗条件为对照,对盆栽月季进行弱光和1-MCP处理,通过测定叶片叶绿素相对含量、叶绿素荧光参数、相对含水量、色差、黄叶率等生理形态指标,研究弱光和1-MCP处理对盆栽月季贮运品质的影响。结果表明:310lx的LED弱光和1.0μL/L的1-MCP处理均能有效保持月季叶色;黑暗环境下,月季叶片的光能转换率明显低于光照环境;弱光处理比1-MCP处理延续叶片含水量效果更佳;弱光处理月季叶片的L值第8天升幅最大;弱光处理叶片的a值保持较高的水平,且高于1-MCP和黑暗处理;弱光处理的b值均低于1-MCP和黑暗处理。综合来看,LED弱光处理能较好保持月季盆栽的贮运品质,保鲜效果优于1-MCP处理,作为一种简便可行的物理保鲜方法,在盆栽培品质调控方面具有应用潜力。

In simulated environment of storage and transport,with normal light and dark conditions as contrast,the effects of weak light and 1-MCP treatments on storage and transport qualities of Rosa chinensis were studied by determining the contents of chlorophyll,chlorophyll fluorescence parameters,water content,colour difference of the leaves,and the rate of yellow leaves.The results showed that weak light by 310 lx LED and 1.0μL/L 1-MCP treatment effectively maintained the leaf color of the roses.In dark conditions,light energy conversion rate of the leaves was significantly lower than that of the light environment.Compared with the 1-MCP treatment,the decrease of weak light leaves water content was smaller;Colour parameters value L on the 8th day increased the most significantly in the weak light treatment.Value a in the weak light treatment was higher than that of 1-MCP and dark treatment,and value b of weak light treatment was lower than 1-MCP and dark treatment.Generally,the LED weak light treatment had a better effect of maintain the storage and transport quality of the pot roses than that of 1-MCP treatment.As a simple and practical method of physical preservation,LED had a potential application in pot flower quality control.