Longevity of Oncidium varicosum (Orchidaceae) inflorescences treated with 1-methylciclopropene

Ciência Rural

Claudia Fabrino Machado Mattiuz²  Ben-hur Mattiuz²  Teresinha De Jesus Deléo Rodrigues¹  Júlia De Pietro²  Ramilo Nogueira Martins²  Selma De Fátima Grossi² 

[1] ,Universidade Estadual de São Paulo (UNESP)Jaboticabal SP ,Brasil

关键词: postharvest;    orchids;    cut flowers;    1-MCP;    ethylene;    fisiologia;    pós-colheita;    orquídeas;    flores de corte;    etileno;   

DOI  :  10.1590/S0103-84782012005000028

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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