Post-harvest longevity of Oncidium varicosum (Orchidaceae) flowers
DOI:
https://doi.org/10.5433/1679-0359.2006v27n1p27Keywords:
“Pulsing”, Sucrose, Cut flowers.Abstract
Oncidium varicosum from the Orchidaceae family has been widely used as pot flower, and, most recently, as cut flower. The objective of this work was to evaluate the longevity of the Oncidium varicosum, due to its low post-harvest resistance, after being conditioned in preservation solutions with different concentrations of sucrose. Oncidium varicosum stems grown in Holambra (SP) were transported to Londrina (PR) in climatized trucks at 5-7oC. Pre-treatment with pulsing (15% sucrose for 24 hours) followed by conditioning in maintenance solution (1, 2, 3, and 4% of sucrose) as well as conditioning in maintenance solution without pre-treatment were evaluated. Flower stems were distributed in an entirely casualized design, with ten treatments and five replications. Flowers were evaluated daily, using a score system developed to compare and verify the conservation of visual aspects. No treatment was superior to the control in maintaining the longevity of the flowers.
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