%0 Journal Article
%T Influence of storage temperature on Epidendrum ibaguense flowers = Influ¨şncia da temperatura de armazenamento em flores de Epidendrum ibaguense.
%A Ana Maria Mapeli
%A Fernando Luiz Finger
%A Jos¨¦ Geraldo Barbosa
%A Raimundo Santos Barros
%J Acta Scientiarum : Agronomy
%D 2011
%I 
%X 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 40ˇăC, 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 35ˇăC 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 10ˇăC. Symptoms of chilling were observed in flowers stored in water after six to seven days at 5ˇăC, showing petal wilting and necrosis of the labellum. At 40ˇăC, flowers stored dry showed severe petal wilting anddarkening of bud petals less than one day after harvest. O presente trabalho avaliou a influ¨şncia da temperatura e armazenamento ¨˛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 ¨˘gua ou a seco, at¨¦ completa senesc¨şncia das flores. A respira  o aumentou quando as infloresc¨şncias foram tratadas com armazenamento ¨˛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¨Şcolas, variando de 1,2 a 3,3, dependendo da temperatura de armazenamento. A produ  o de etileno foi m¨˘xima a 20oC, para as flores mantidas em ¨˘gua, e a 35oC para aquelasmantidas a seco, e a partir destas temperaturas houve redu  o em ambos os tratamentos. A longevidade foi m¨˘xima quando mantidas em ¨˘gua a 10oC. Sintomas de inj¨˛ria por frio foram observados em flores armazenadas em ¨˘gua ap¨®s seis-sete dias a 5oC, indicando murchamento das p¨¦talas e necrose do labelo. A 40oC, as flores armazenadas a seco apresentaram severo murchamento das p¨¦talas e escurecimento dosbot es florais, em menos de um dia de colhidas.
%K storage
%K Q10 factor
%K chilling symptoms
%K armazenamento
%K fator Q10
%K sintomas de inj¨˛ria por frio
%U http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6365/6365