Preharvest Applications of Sprayable 1-methylcyclopropene in the Orchard for Management of Apple Harvest and Postharvest Condition

Abstract

<jats:p>A sprayable formulation of 1-methylcyclopropene (1-MCP; AgroFresh, Spring House, PA) was applied to ‘Scarletspur Delicious’ and ‘Cameo’ apples in the orchard 1 to 3 weeks before harvest and compared in different postharvest studies with the commercial postharvest 1-MCP fruit treatment (SmartFresh; AgroFresh) and with aminoethoxyvinylglycine (AVG; ReTain; Valent BioSciences, Walnut Creek, CA). Treated apples were held in air storage for 50 to 60 d or in controlled-atmosphere storage for 120 to 125 or 215 to 225 d. With increased concentration, sprayable 1-MCP treatments were effective at controlling flesh firmness loss and internal ethylene concentration (IEC) up to 225 d of storage as well as during a 7-d poststorage shelf life simulation at room temperature. Application closer to harvest improved the effect of sprayable 1-MCP on control of flesh firmness loss and IEC. Concentrations of sprayable 1-MCP above 90 mg a.i./L produced similar fruit effects to 1-MCP. Treatment with 1-MCP showed little effect on soluble solids concentration (SSC), titratable acidity (TA), or skin or flesh color in ‘Delicious’ but slightly increased SSC and TA in ‘Cameo’ apples. AVG applied 4 weeks before commercial harvest controlled IEC nearly as well as either sprayable 1-MCP or 1-MCP during storage, but AVG-treated fruit allowed to ripen for 7 d at room temperature after storage lost much more flesh firmness regardless of storage regime. Sprayable 1-MCP also reduced starch hydrolysis, IEC and fruit drop at harvest. Sprayable 1-MCP may offer new opportunities for effective preharvest management of apple fruit condition, storability, and poststorage fruit quality.</jats:p>

The Role of Ethylene and Calcium in Programmed Cell Death of Cold-Stored Cucumber Fruit

“…Commercial formulations of 1‐methylcyclopropene (1‐MCP) have facilitated broader agricultural applications of the ethylene‐action inhibitor, particularly in post‐harvest settings (Elfving et al . ). 1‐MCP treatment reduced chilling injury symptoms of loquat (Cao et al .…”

“…Ethylene production correlated closely with DNA and nuclear fragmentation in hybrid seedlings from the cross Nicotiana suaveolens × N. tabacum, indicating that ethylene is an essential factor mediating PCD (Yamada and Marubashi 2003). Commercial formulations of 1-methylcyclopropene (1-MCP) have facilitated broader agricultural applications of the ethylene-action inhibitor, particularly in postharvest settings (Elfving et al 2007). 1-MCP treatment reduced chilling injury symptoms of loquat (Cao et al 2009), green bean (Cho et al 2008) and persimmon fruit (Salvador et al 2004).…”

Relationships between starch pattern indices and starch concentrations in four apple cultivars

“…3) in the absence of 'significant' ethylene or changes thereof. However, starch hydrolysis can be slowed by treatment of fruit on the tree with aminoethoxyvinylglycine (ReTain, Valent Biosciences) and 1-methylcyclopropene (Harvista, AgroFresh, Inc.), inhibitors of ethylene production and perception, respectively (Elfving et al, 2007;Watkins et al, 2010 Yuan andCarbaugh, 2007). Johnston et al (2009) found that some maturity parameters such as starch are very ethylene sensitive, and therefore, even very low amounts of IEC may cause the onset of starch hydrolysis.…”

Application of spherical silicate to prepare solid dispersion dosage forms with aqueous polymers

“…However, starch hydrolysis can be slowed by treatment of fruit on the tree with aminoethoxyvinylglycine (ReTain, Valent Biosciences) and 1-methylcyclopropene (Harvista, AgroFresh, Inc.), inhibitors of ethylene production and perception, respectively (Elfving et al, 2007;Watkins et al, 2010;Yuan and Carbaugh, 2007). Johnston et al (2009) found that some maturity parameters such as starch are very ethylene sensitive, and therefore, even very low amounts of IEC may cause the onset of starch hydrolysis.…”