Data/hora: 06/06/2024 18:11:10

Provedor de dados: 	75	
País: 	Brazil	
Título: 	Ethylene and 1-methylcyclopropene action over senescence of nasturtium flowers	
Autores: 	Silva,Tania P; Finger,Fernando L.	
Data: 	2015-12-01	
Ano: 	2015	
Palavras-chave: 	Tropaeolum majus; Phytohormone; Post-harvest; Phenological stages.	
Resumo: 	ABSTRACT: This work describes ethylene and 1-methylcyclopropene (1-MCP) action on post-harvest shelf life of four development stages of nasturtium flowers. To reach this goal, we carried out three experiments. In the first and second experiments, we studied five ethylene (0; 0.1; 1; 10; 100 and 1000 μL/L) and three 1-MCP concentrations (0.25; 0.5 and 0.75 μL/L), respectively. In the third experiment, 1-MCP was followed by combined with ethylene (only 1-MCP; only ethylene; and 24 hours of exposure to 0.75 μL/L 1-MCP followed by 24 hours of exposure to 100 μL/L ethylene). All experiments had two control treatments, one keeping non-exposed flowers inside and another outside exposure chambers. Experiments were set in factorial design, in complete blocks at random, with four 10-flower replications each. Flower senescence was determined by a pre-established visual scale and by observing floral bud development. Ethylene dose above 10 μL/L induced flower wilting and premature senescence from the second floral development stage. Furthermore, higher concentrations of exogenous ethylene promoted irregular flower opening and/or morphological abnormalities in opened flowers. 1-MCP effectively extended post-harvest longevity of nasturtium flowers, independent of the concentration and even in the presence of exogenous ethylene.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400453	
Editor: 	Associação Brasileira de Horticultura	
Relação: 	10.1590/S0102-053620150000400008	
Formato: 	text/html	
Fonte: 	Horticultura Brasileira  v.33 n.4 2015	
Fonte: 	info:eu-repo/semantics/openAccess