Data/hora: 01/06/2024 12:43:17

Provedor de dados: | 65
País: | Brazil
Título: | Longevity of Oncidium varicosum (Orchidaceae) inflorescences treated with 1-methylciclopropene
Autores: | Mattiuz,Claudia Fabrino Machado; Mattiuz,Ben-Hur; Rodrigues,Teresinha de Jesus Deléo; Pietro,Júlia de; Martins,Ramilo Nogueira; Grossi,Selma de Fátima.
Data: | 2012-06-01
Ano: | 2012
Palavras-chave: | Postharvest; Orchids; Cut flowers; 1-MCP; Ethylene.
Resumo: | Oncidium varicosum belongs to Orchidaceae family and nowadays it is commercialized on large scale due to its potential as cut flower. The species distinguishes decoratively in function of the high number of flowers golden yellow that compose its great and delicate inflorescence. The hormone ethylene performs an important function in the processes related with the senescence of cut flowers, and especially in relation to orchids anti-ethylene treatments are recommended to extend the vase life. Among chemicals used today for the postharvest treatment of flowers the 1-methylciclopropene (1-MCP) is an efficient inhibitor of autocatalytic production of ethylene. This research aimed to evaluate the effect of different concentrations of 1-methylciclopropene (Control and 1-MCP: 250ppb, 500ppb, 1000ppb) upon physiological aspects of cut inflorescences of Oncidium varicosum. The best treatment was 1-MCP 1000ppb and the flowers presented larger values of water content, soluble carbohydrates, reducing sugars, carotenoids and the respiration rates were lower. These results contributed to higher quality and longer life of inflorescences.
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000600006
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/S0103-84782012005000028
Formato: | text/html
Fonte: | Ciência Rural  v.42 n.6 2012
Fonte: | info:eu-repo/semantics/openAccess