Influence of storage temperature on Epidendrum ibaguense flowers = Influ那ncia da temperatura de armazenamento em flores de Epidendrum ibaguense.

作者：Ana Maria Mapeli; Fernando Luiz Finger; Jose Geraldo Barbosa; Raimundo Santos Barros

来源：Acta Scientiarum - Agronomy, 2011.

• storage
• Q10 factor
• chilling symptoms
• armazenamento
• fator Q10
• sintomas de injuria por frio

The present work was carried out to evaluate the influence oftemperature and wet-versus-dry storage on longevity, respiration and ethylene production during storage of E. ibaguense flowers. The inflorescences were harvested and stored at 5, 10, 15, 20, 25, 30, 35, and 40oC, in water or dry, until complete senescence. Respiration increased when inflorescences were treated with wet or dry storage. The Q10 factor for this flower, at temperatures ranging from 5 to 40～C, was similar to most fresh horticultural products, varying between 1.2 and 3.31 depending on storage temperature. Production of ethylene by the inflorescence was maximal at 20oC for flowers maintained in water, and at 35～C for those flowers kept dry, followedby a sharp drop in both treatments. A maximal shelf life for cut flowers was obtained when the inflorescences were stored wet at 10～C. Symptoms of chilling were observed in flowers stored in water after six to seven days at 5～C, showing petal wilting and necrosis of the labellum. At 40～C, flowers stored dry showed severe petal wilting anddarkening of bud petals less than one day after harvest. O presente trabalho avaliou a influ那ncia da temperatura e armazenamento 迆mido e seco sobre a longevidade, respira o e produ o de etileno de flores de Epidendrum ibaguense. As hastes foram colhidas, colocadas em vaso e armazenadas em temperatura de 5, 10, 15, 20, 25, 30, 35 e 40oC, em 芍gua ou a seco, at谷 completa senesc那ncia das flores. A respira o aumentou quando as infloresc那ncias foram tratadas com armazenamento 迆mido ou seco. O fator Q10 para estas flores, na faixa de temperatura de 5 a 40oC, foi similar a da maioria dos produtos hort赤colas, variando de 1,2 a 3,3, dependendo da temperatura de armazenamento. A produ o de etileno foi m芍xima a 20oC, para as flores mantidas em 芍gua, e a 35oC para aquelasmantidas a seco, e a partir destas temperaturas houve redu o em ambos os tratamentos. A longevidade foi m芍xima quando mantidas em 芍gua a 10oC. Sintomas de inj迆ria por frio foram observados em flores armazenadas em 芍gua ap車s seis-sete dias a 5oC, indicando murchamento das p谷talas e necrose do labelo. A 40oC, as flores armazenadas a seco apresentaram severo murchamento das p谷talas e escurecimento dosbot es florais, em menos de um dia de colhidas.