Data/hora: 03/07/2024 11:03:53

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	19/06/2018	
Data da última atualização: 	20/06/2018	
Autoria: 	ARGENTA, L. C.; SCOLARO, A. M. T.; AMARANTE, C. V. T.; VIEIRA, M. J.; WERNER, S. S.	
Título: 	Preharvest treatment of 'Gala' apples with 1-MCP and AVG - I: effects on fruit maturation on the tree.	
Ano de publicação: 	2018	
Fonte/Imprenta: 	ACTA HORTICULTURAE, Cartagena, Murcia, Spain, n. 1194, p. 113-119, 2018.	
Idioma: 	Inglês	
Conteúdo: 	The study evaluated the efficacy of a sprayable formulation of 1-
methylcyclopropene (1-MCP) to delay fruit maturation on the tree in comparison to
aminoethoxyvinylglycine (AVG). 1-MCP (150 mg L-1) and AVG (124 mg L-1) were
sprayed to ?Imperial Gala? and ?Royal Gala? apple trees from two commercial orchards,
7 and 28 days before commercial fruit harvest maturity, respectively, during four
consecutive years. Untreated trees were used as control. Fruit were harvested weekly,
during four weeks from the 7th day after 1-MCP spray and assessed one day after
harvest. The extent of fruit maturation delay on the tree by 1-MCP and AVG was
quantified by linear regression analysis of fruit firmness as a function of harvest date.
The estimated date when apple fruit reached firmness of 71.1 N on the tree was
delayed for 5.3 to 5.6 days by 1-MCP and for 9.0 to 9.4 days by AVG in comparison to
the control, depending on cultivar-orchard. Indices of fruit maturity and quality at
harvest were also estimated by linear regression analysis for the estimated date when
fruit reach flesh firmness of 71.1 N on the tree. 1-MCP and/or AVG treated fruit had
similar or lower ethylene production rates, starch index, titratable acidity and red
color and similar or greener background color than control, at estimated harvest
dates when fruit of all three treatments reached the same firmness of 71.1 N. 1-MCP
and AVG treatments did not affect rates of fruit growth. However, at estimated dates
when fruit of all treatments reached the firmness of 71.1, 1-MCP and AVG treated fruit
were 2.1 to 7.1% larger than control fruit.	
Palavras-Chave: 	ethylene; fruit growth; fruit	quality; harvest delay; Malus × domestica.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_40723.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
Exemplares: 	Epagri-Sede - (102321-1) - UPC - AP - DD -  -  -  - DIS