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首页> 外文期刊>Advances in Horticultural Science >Effects of 1-MCP and ethylene on antioxidant enzyme activity and postharvest physio-biochemical characteristics of cut carnation flower cv. Fortune
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Effects of 1-MCP and ethylene on antioxidant enzyme activity and postharvest physio-biochemical characteristics of cut carnation flower cv. Fortune

机译：1-MCP和乙烯对香石竹花cv抗氧化酶活性及采后生理生化特性的影响发财

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摘要

Carnation {Dianthus caryophyllus L.) flowers are one of the most important cut flowers in the world. The majority of carnation cultivars are sensitive to ethylene which affects the physiological and biochemical postharvest characteristics of these flowers. Applying inhibitors of biosynthesis and action of ethylene is important factor to protect the display quality and extend postharvest life. In order to evaluate the effects of 1-methylcyclopropene (1-MCP) and ethylene on the antioxidant enzyme activity of cut carnation cv. Fortune and subsequently on the extension of vase-life, this experiment was designed as a Completely Randomized Design (CRD) with three replications. Carnation cut flowers were treated with 1-MCP at concentrations of 0,0.5,1 and1.5 ul/1 for 24 h and subsequently exposed to ethylene (1 ul/1) for 16 h. Data were analyzed using MSTAT-C statistical software and means were compared based on Least Significant Differences (LSD) test (p< 0.01). Our results showed that 1-MCP treatment had significant effects on vase life and biochemical characteristics like contents of leaf chlorophyll, petal anthocyanin, petal cell membrane stability and antioxidant enzymes activity such as catalase, peroxidase, and superoxide dismutase. The highest vase life and cell membrane stability were appeared in samples treated with 1.5 ul/I1-MCP which was significantly higher than 0 and 0.5 treatments, although there was no significant difference with 1 ul treatment. The highest chlorophyll and anthocyanin contents were also measured under 1.5 (tl/l 1-MCP which was significantly higher than other treatments. The highest and lowest catalase and peroxidase activity were related to 1 and 0 urt/1 1-MCP, respectively. The highest and lowest superoxide dismutaseactivity was observed in 1.5 and 0 ul/1 1-MCP. In conclusion, application of 1-MCP improved and delayed the onset of senescence symptoms resulted in extending the vase life of cut carnation cv. Fortune.
机译：康乃馨（Dianthus caryophyllus L.）花是世界上最重要的切花之一。大多数康乃馨品种对乙烯敏感，乙烯会影响这些花的生理和生化特性。使用乙烯的生物合成和作用抑制剂是保护展示质量和延长收获后寿命的重要因素。为了评估1-甲基环丙烯（1-MCP）和乙烯对香石竹cv的抗氧化酶活性的影响。幸运的是，此后随着花瓶寿命的延长，该实验被设计为具有三个重复的完全随机设计（CRD）。康乃馨切花用浓度为0、0.5、1和1.5 ul / 1的1-MCP处理24小时，然后暴露于乙烯（1 ul / 1）16小时。使用MSTAT-C统计软件分析数据，并基于最小显着性（LSD）检验比较均值（p <0.01）。我们的结果表明，1-MCP处理对花瓶寿命和生化特性（例如叶绿素含量，花瓣花色苷，花瓣细胞膜稳定性和过氧化氢酶，过氧化物酶和超氧化物歧化酶等抗氧化酶活性）具有显着影响。用1.5 ul / I1-MCP处理的样品出现了最高的花瓶寿命和细胞膜稳定性，尽管与1 ul处理无显着差异，但明显高于0和0.5处理。在1.5（tl / l 1-MCP）下也测出了最高的叶绿素和花色苷含量，这明显高于其他处理。过氧化氢酶和过氧化物酶的最高和最低活性分别与1和0 urt / 1 1-MCP有关。在1.5和0 ul / 1 1-MCP中观察到最高和最低的超氧化物歧化酶活性，总之，施用1-MCP改善并延缓了衰老症状的发作，从而延长了切花康乃馨的花瓶寿命。

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