Effect of Foliar Spraying of Salisylic Acid and Methyl Jasmonate on Quality and Vase Life of Cut Rose Flowers cvs.  Sweet Water and  Sorbet Avalanch

Rose plants cvs. „Sweet Water‟ and „Sorbet Avalanch‟ were foliar sprayed twice by salicylic acid and methyl jasmonate in stage of leaf color change. Distilled water was used as control. Flowers were placed in erlens containing 3% sucrose after harvest. The results showed that „Sweet Water‟ had more vase life than „Sorbet Avalanch‟. The response of cultivars to treatments was not similar for some recorded parameters. „Sweet Water‟ treated with 0.2 mM methyl jasmonate had the longest vase life, but in „Sorbet Avalanch‟ this treatment caused the shortest vase life. The highest total stem carbohydrate was observed in „Sorbet Avalanch‟ treated with 0.01 mM salicylic acid and in „Sweet Water‟ treated with 0.2 mM methyl jasmonate. Also, 0.2 mM methyl jasmonate caused the least total stem carbohydrate content in „Sorbet Avalanch‟. The highest soluble protein content in petals was measured in „Sweet Water‟ treated whit 0.2 mM methyl jasmonate and „Sorbet Avalanch‟ treated whit 0.1 mM methyl jasmonate.