Vol. 83 No: 2

Title:
Longevity of Epidendrum ibaguense flowers as affected by pre-loading treatments and vase solution

Authors:
FERNANDO LUIZ FINGER, PAULO JOSÉ DE MORAES, ANA MARIA MAPELI, JOSÉ GERALDO BARBOSA and PAULO ROBERTO CECON

pp: 144-147

Abstract:
Post-harvest longevity of Epidendrum ibaguense cut flowers was maximum when treated for 6 h with 1 g m^-3 Ethylbloc^® [0.14% 1-methylcyclopropene; 1-MCP] followed, or not, by pulsing with 200 g l^-1 sucrose for 12 h. This extended the vase-life from 5.5 d to at least 11 d. Cut inflorescences pulsed with 2.0 mM silver thiosulphate (STS) had reduced abscission of flowers, similar to the effect of 1-MCP.When inflorescences were pulsed with 200 g l^-1 sucrose alone for 12 h, no effect was observed on the vase-life of the flowers. Flowers kept in a vase solution containing 20 g l^-1 sucrose, 150 mg l^-1 citric acid, and 200 mg l^-1 8-hydroxyquinoline citrate did not influence the longevity of 1-MCP or STS pre-treated flowers, but the vase solution had a small influence on retarding abscission compared with flowers kept in distilled water. Adding 0.2 mM STS to the vase solution improved vase-life 1.74- and 1.45-fold compared with the longevity of flowers kept in distilled water or in vase solution alone, respectively. The presence of 0.3 mM AgNO₃ alone, or mixed into the vase solution, had no affect on the vase-life of the flowers.

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