Data/hora: 06/06/2024 13:10:51

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	17/11/2021	
Data da última atualização: 	12/05/2022	
Autoria: 	AMARANTE, C. V. T.; ARGENTA, L. C.; FREITAS, S. T.; STEFFENS, C. A.	
Título: 	Efficiency of pre-harvest application of 1-MCP (Harvista™ 1.3 SC) to delay maturation of 'Cripps Pink' apple fruit.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Scientia Horticulturae, Amesterdã, v. 293, 2022.	
Idioma: 	Inglês	
Conteúdo: 	The objective of this study was to evaluate the efficiency of pre-harvest application of 1-methylcyclopropene- &#945;-cyclodextrin in concentrated magnesium sulfate solution (1-MCP; Harvista? 1.3 SC) to delay maturation of ?Cripps Pink? apple fruit. 1-MCP was sprayed at 0, 75, 150, 225 and 300 mg L&#1048576; 1, seven days before the anticipated harvest time (DBAH). Aminoethoxyvinylglycine (AVG, 124 mg L&#1048576; 1, Retain®) was sprayed 28 DBAH, as a commercial control treatment. Fruit maturation was delayed by increasing 1-MCP concentration. 1-MCP at concentrations &#8805; 150 mg L&#1048576; 1 delayed by six and 15 days the time for the fruit to reach the harvest firmness of 71.1 N and 66.7 N, respectively, compared to untreated fruit. Skin color changes (red color development and background degreening) were inhibited by increasing 1-MCP concentrations up to 300 mg L&#1048576; 1. The reduction of ethylene synthesis, and the loss of flesh firmness and starch content occurred by increasing 1-MCP concentrations up to 98.2, 134.5 and 182.3 mg L&#1048576; 1, respectively. The AVG treatment delayed ethylene production and skin red color development at harvest more markedly than the highest concentration of 1-MCP (300 mg L&#1048576; 1). However, both treatments (AVG and 1-MCP at 300 mg L&#1048576; 1) had late harvested fruit (28 days after spraying 1-MCP) with percentage of skin red color below 40%. The results show that 1-MCP delays maturity, but concentrations &#8805;135 mg L&#1048576; 1 do not improve its efficacy on preserving flesh firmness while might inhibit skin red color development in ?Cripps Pink? apples.	
Palavras-Chave: 	Malus domestica Borkh Inhibition of ethylene action Inhibition of ethylene synthesis Harvest scheduling Flesh firmness.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_50325.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
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