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• Effect of 1-MCP and chemicals on the vase life of Rosa hybrida L. cv. 'Bordeaux'

  13-16.

  O. Feigel-Terék

  E. Jámbor-Benczúr

  I. Mosonyi

  Á. Máthé

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  183

  The effect of 1-MCP on rose cultivar 'Bordeaux ' was studied in combination with different preservative solutions. The flowers were treated with 1-MCP for 6 hours at 17 °C and for 18 hours at 4 °C. As for the diameter of flowers the best resu lts was achieved, when applying 20 gL- 1 sucrose + Clorox (2 ml L- 1), as well as preservative "Spring" ( I 0 gL-1) + 1-MCP ( 18 hours). Similar results were measured in the case of Spring + Clorox + 20 gL-1 sucrose with 1-MCP (6 and  18 hours). The longer MCP treatm ent gave better results as compared to the shorter ones, because the flowers were much more open.The condition of flowers was the best in the solution of Clorox + 20 gL-1 sucrose and Spring solution combined with the longer MCP treatment. and Clorox + 20 gL- 1, on the IQ1h day. The longest vase life ( 10,3 day) was observed in the case of Spring application combined with 18 hours of MCP treatment. ln this treatment the vase life was prolonged by 3,3 days. As regards the calculated ornamental values, the following sequence could be established :"Spring" + l-MCP ( 18hrs) 134 points, Clorox + 20 gL-1 sucrose + 1-MCP (l8h) with 129 point, and the third was the Clorox + 20 gL-1 sucrose with 1 19 point.