Horticulture, Environment, and Biotechnology : HEB

Korean Society of Horticultural Science (한국원예학회)
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Effect of 1-Methylcyclopropene on the Retardation of Senescence in Cut Flower of Hibiscus syriacus

1-Methylcyclopropene이 무궁화 절화의 노화지연에 미치는 영향

Son, Ki-Cheol;In, Byung-Chun;Jung, Hee-Jin;Jee, Sun-Ok
손기철;인병천;정희진;지선옥

  • Published : 20020000
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Abstract

This study was conducted to investigate the effect of 1-methylcyclopropene (1-MCP) on the retardation of senescence in Hibiscus flowers. Cut flowers of Hibiscus (Hibiscus syriacus L. cv. Hansarang) were held in the laboratory at 23 ±□2$^{o}C$ of temperature, 60 ±□5% of relative humidity, and 20 mmolám-2ás-1 of irradiance, and necessary measurements were taken. According to typical pattern of the flowering and senescence of Hibiscus, the rapidly increasing bud's diameter reached anthesis between 6~12 hours after experiment and then petals were inrolled abruptly from 36hours. Correlation between flower diameter and ethylene production showed that ethylene production increased considerably before 6 hours at which wilting or inrolling occurred, and ethylene production and wilting were accelerated by petal inrolling. On the contrary, the application of 10nLá$L^{-1}$ 1-MCP for 3 hours on the flower made the diameter of flower increase constantly up to 36 hours with very low level of ethylene production. When Hibiscus flower was treated with various concentrations of 1-MCP and durations, it was found that treatment of 10nLá$L^{-1}$ 1-MCP for 3 hours were most effective on the inhibition of ethylene production and retardation of senescence. In this case, vase life of Hibiscus were extended 140%(53h) more than that of control. On the other hand, treatment of 10nLá$L^{-1}$ 1-MCP for 6 hours reduced vase life of Hibiscus. The reduction of vaselife was attributed to the damage of plant tissue by the chemical. In the light of application time, ethylene production was extremely inhibited, if 1-MCP was applied to Hibiscus at stage I.

1-methylcyclopropene(1-MCP)처리가 무궁화(Hibiscus syriacus L. cv. Hansarang) 절화의 노화지연에 미치는 영향을 조사하였다. 처리후 절화는 환경제어실(온도 232C, 상대습도 605%, 광도 30molms, 광주기 12시간)에 둔 다음 필요한 조사를 수행하였다. 무궁화의 전형적인 노화양상은 실험개시 6~12시간사이에 급격하게 화경이 증가된 후 36시간부터 또 다시 빠르게 inrolling되는 패턴을 나타내었다. 화경과 에틸렌 발생간의 상관관계를 보면 시들음이나 inrolling이 시작되기 6시간 전부터 에틸렌 발생량은 이미 상당히 증가되었고, 화판이 inrolling되면서 에틸렌 발생과 시들음은 더욱 가속화되었다. 무궁화에 10nLL 1-MCP로 3시간동안 처리하였을 경우, 36시간까지 꾸준하게 화경의 증가를 나타냈으며, 에틸렌 발생은 매우 낮았다. 무궁화에 대해 다양한 처리시간(1, 3, 6시간)으로 처리농도(0.1, 1, 10nLL)를 다르게 하여 처리하였을 경우, 10nLL 1-MCP 3시간 처리가 에틸렌 발생 억제나 노화지연에 가장 효과적인 것으로 나타났다. 이러한 결과는 대조구에 비하여 140%(53시간) 이상의 절화수명이 연장된 것이다. 한편 10nLL 1-MCP 6시간 처리는 오히려 절화수명을 감소시켰는데 이것은 식물조직이 화학물질에 의하여 손상을 받은 것으로 생각된다. 무궁화의 노화단계에 따른 1-MCP를 처리한 결과, stage I에서 처리할 때 에틸렌 발생 억제에 가장 효과적이었다.

Keywords

References

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