The climatic characteristics of the country favor the cultivation of tropical flowers. The continued expansion of this market is due the beauty, exoticit nature and postharvest longevity of flower. However, little is known about the postharvest of tropical plants. Therefore, this paper provides information on harvest, handling and storage of cut tropical plants. Keywords: postharvest, storage temperature, conditioning solution. RESUMO Manutenção da qualidade de plantas tropicaisAs características climáticas do país favorecem o cultivo de flores tropicais A continua expansão deste mercado é devido à beleza, exoticidade e longevidade pós-colheita das hastes florais. No entanto, pouco se sabe sobre a pós-colheita de plantas tropicais. Portanto, este artigo fornece informações sobre colheita, manuseio e armazenamento de plantas tropicais cortadas. Palavras-chave: pós-colheita, temperatura de armazenamento, solução conservante (1)

In Brazil, there are few studies on cut flowers cold storage, and there is no research on the association of controlled atmosphere with flower cooling. Worldwide research in this sector is considered scarce; this requires the establishment of adequate postharvest technology, involving cold storage and controlled/modified atmosphere for cutting flowers. In Brazil, roses are the most widely cultivated cut flower and a single producer exports three pallets of this species by airfreight per week. The objectives of this work were to define the concentrations of O 2 and CO 2 in which cut roses 'Avalanche' should be submitted, defining procedures for postharvest conservation and establishing technical guidelines for the exportation of cut roses under controlled atmosphere. The experiments were carried out at 1±1 °C with the help of a flowchart to dose the gases, and the concentration of O 2 , CO 2 and ethylene were assessed. Phase 1 experiment had O 2 concentration set at 21% associated with four different concentrations of CO 2 , 10, 20, 30 and 40%. Phase 2 experiment had O 2 at 3% associated with four different concentrations of CO 2 , 3, 6, 10 and 15%. The controlled atmosphere with 3% O 2 and 6% CO 2 associated with 1+1 °C was indicated for the storage of cut rose 'Avalanche'. Keywords: carbon dioxide, oxygen, postharvest, flowboard. RESUMO Atmosfera modificada em armazenamento refrigerado de hastes de rosas 'Avalanche'No Brasil, existem poucos estudos com armazenamento refrigerado e flores de corte, tal como refrigeração associada à atmosfera modificada para flores. Em nível mundial, as pesquisas neste setor são consideradas incipientes; portanto, o estabelecimento de tecnologia de pós-colheita adequada de armazenamento sob refrigeração e atmosfera modificada controlada para flores de corte se faz necessário. No Brasil a rosa é a flor de corte mais cultivada pelos produtores, de forma que apenas um único produtor desta flor exporta até 3 paletes aéreos por semana. Assim, com a hipótese de que a rosa, após o corte, armazenada em ambiente refrigerado e com atmosfera modificada controlada deverá ter sua vida útil ampliada. Os objetivos deste trabalho foram: definir as concentrações de gases nas quais as rosas seriam submetidas em atmosfera controlada; definir procedimentos de pós-colheita para conservação de rosas em combinação com sistema de atmosfera controlada e estabelecer procedimentos técnicos para exportação de rosas sob atmosfera controlada. As análises foram realizadas à temperatura ambiente de 1±1 °C, e as concentrações de O 2 e CO 2 e a produção de etileno foram mensuradas. As rosas foram mantidas em armazenamento refrigerado e atmosfera controlada na temperatura de 1±1 °C. Primeiramente, a concentração de O 2 foi fixada em 21% e quatro concentrações diferentes de CO 2 , 10, 20, 30 e 40% foram testadas. No segundo experimento, a concentração de O 2 foi fixada em 3% e quatro diferentes concentrações de CO 2 , 3, 6, 10 e 15% foram testadas. As flores foram colocadas em frascos de acrílico com de 20 c...

Rosa sp. is the leading cut flower commercialized in Brazil and in the world; and to maintain stem quality it should be stored at 1 °C, however, there are still doubts about the storage of roses, especially whether the stems should be cold stored in water before marketing. In order to assess the feasibility of wet and dry storage, rose stems, ‘Avalanche’ were stored for 28 days in both conditions at 1 ± 2 °C / 95% RH. Weekly stems batches were transferred to 25 °C / 70% RH and kept in vessels containing tap water for postharvest assessment. It was observed that the decrease in the quality of the roses was inversely proportional to the storage time in both treatments. Although wet storage can occur for up to 21 days, when you need to store roses for a week or two, cold storage in dry condition is advised since it is more economical and viable for the producer.

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