Differential effects of preharvest sprayable 1-methylcyclopropene application on fruit quality attributes and major targ
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RESEARCH REPORT
Differential effects of preharvest sprayable 1‑methylcyclopropene application on fruit quality attributes and major targeted metabolites in cold‑stored ‘Chuhwangbae’ pears Hnin Phyu Lwin1 · Jinwook Lee1 Received: 30 May 2020 / Revised: 10 August 2020 / Accepted: 13 August 2020 © Korean Society for Horticultural Science 2020
Abstract The effect of preharvest sprayable 1-methylcyclopropene (1-MCP) on fruit quality and certain targeted major metabolites was investigated in ‘Chuhwangbae’ pears during short-term cold storage and shelf life. Preharvest 1-MCP application affected methionine, sucrose, and total flavonoid content and fruit decay. During cold storage and shelf life, numerous fruit quality attributes and specific targeted metabolites were affected not by preharvest 1-MCP application but by the storage duration. Overall responses in the normalized heatmap matrix and principal component analysis (PCA) loading plot showed that preharvest sprayable 1-MCP treatment enhanced the incidence of physiological disorders and suppressed the responses of targeted metabolites compared with that in untreated fruit. The results obtained using the PCA score plot showed that physiological and biochemical parameters of the fruit after preharvest 1-MCP treatment were highly separated and diverged based on the storage duration. Nevertheless, preharvest 1-MCP treatment did not significantly affect the physiological and biochemical responses associated with fruit parameters or soluble carbohydrates and free amino acids contents in cold-stored pears. Therefore, the results suggest that preharvest sprayable 1-MCP application may not have strong positive effects on the postharvest quality attributes of ‘Chuhwangbae’ pears during cold storage and shelf life. Keywords Asian pear · Cold storage · Fruit quality attributes · Preharvest sprayable 1-methylcyclopropene application · Targeted metabolomics
1 Introduction The effect of 1-methylcyclopropene (1-MCP), an ethylene action inhibitor, has been actively studied in fruit and it has been commercialized for a wide range of horticultural applications, such as controlling fruit ripening in apples and pears (Huber 2008; Watkins 2008; Park 2012). The use of 1-MCP-based technology has had a huge impact on the
Communicated by Eun Jin Lee Electronic supplementary material The online version of this article (https://doi.org/10.1007/s13580-020-00289-9) contains supplementary material, which is available to authorized users. * Jinwook Lee [email protected] 1
Department of Plant Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea
handling of horticultural products, especially apples, and has provided insights into the biochemical reactions and mechanisms involved in fruit ripening and quality. The following two commercial formulas of 1-MCP exist: the first is the postharvest fumigation-type 1-MCP (SmartFresh™ Technology) and the second is the preharvest spray-type 1-MCP (Harvista™ Technology). The effectiveness of postharvest technologies of 1-
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