The residual effect of 1-methylcyclopropene on protecting phalaenopsis flowers against ethylene injury
Journal
HortScience
Journal Volume
47
Journal Issue
10
Pages
1484-1489
Start Page
1484
End Page
1489
Date Issued
2012
Author(s)
Abstract
Phalaenopsis flowers are prone to wilting under ethylene (C 2 H 4 ) stress. 1-Methylcyclopropene (1-MCP) can protect Phalaenopsis flowers against ethylene injury. In this study, we determined the residual effect of 1-MCP and how it is affected by temperature. The efficacy of multiple applications of 1-MCP was also investigated. The residual effect of 1-MCP was determined by pretreating blooming Phalaenopsis amabilis plants with 0.8 �gL�PL ?1 1-MCP for 8 hours on Day 0 followed by 2 �gL�PL ?1 ethylene fumigation for 12 hours on designated days. Without 1-MCP pretreatment, flowers began to wilt within 2 days after exposure to ethylene. Duration of the residual protection of 1-MCP on P. amabilis was ?6 to 8 days during summer in Taiwan. Lower temperatures after 1-MCP application prolonged protection times. The full protection times under day/night temperatures of 25/20, 20/15, and 15/13 �XC were 4 to 8, 10 to 13, and 13 to 17 days, respectively. Furthermore, multiple applications of 1-MCP extended the duration of 1-MCP protection against ethylene. Three applications increased the residual protection of P. amabilis by 1-MCP to at least 24 days.
Type
journal article