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Agronomía Colombiana

Print version ISSN 0120-9965

Abstract

LOPEZ, Paola; NEISA, Diana Patricia; BACCA, Cecilia  and  FLOREZ, Víctor Julio. Evaluation of floral preservatives in the postharvest of three varieties of standard carnation. Agron. colomb. [online]. 2008, vol.26, n.1, pp.116-126. ISSN 0120-9965.

In cut carnation, it is indispensable the postharvest treatment based on silver thiosulphate (STS) in order to guarantee high flower longevity; nevertheless, the anti-ethylene treatments with the silver ions imply an environmental pollution. The objective of this study was to carry out the evaluation of different compounds in the post harvest of standard carnation varieties Nelson, Dream and Delphi, as possible replacements of the STS treatment. For this purpose, the treatments based on STS, SR-AOA (slow release aminooxyacetic acid) and chitosan were used. Following the harvest of flower stalks, a trip simulation for 21 day was carried out; subsequently, the flowers stalks were evaluated for longevity, blooming speed, color and water consumption. In the evolution of the vase life, the same tendency for the three varieties was observed: a first group of higher flower longevity conformed by treatments based on SR-AOA and STS had an average duration from 14 to 20 days; and the second group of lower flower longevity conformed by the treatments based on chitosan, chitosan plus citric acid, chitosan plus AOA and absolute control had an average duration from 6 to 8 days.

Keywords : chitosan; silver thiosulphate; amino oxyacetic acid; anti-ethylene compounds; environmental contamination.

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