بررسي اثر تيوسولفات نقره و 8- هيدروكسي كينولين ستيرات و تيمارهاي دمايي بر طول عمر گل بريده رز رقم ايلونا

Evaluation Effects of Silver Thiosulfate (STS), 8-Hydroxy Chinolin Citrate (8-HQ-C) and Temperature Treatments on Vase Life of Rose Cut Flowers

This experiment was carried out to evaluate the vase life and quality of rose cut flowers cv. Ilona using chemical solution in 2000-2001 in Dezful region. For this reason factorial experiment was conducted in a compeletely randomized design. Silver thiosulfate in 5 different stages 0,100, 200, 300 and 400 mg/lit and 8-hydroxy chinolin citrate in 3 different stages 0,100 and 200 mg/lit, with 4 replications in 2 temperature treatments include 25° C with and without percooling period at 4° C for 24 hours. Flower stems after harvest were placed in vases containing 500 ml of various solutions and vase life and opening of flower were determined. Results showed that the effects of Silver thiosulfate on vase life and flower opening was significant (P>0.01). The Effect of 8-hydroxy chinolin citrate on vase life was significant while on flower opening was not. Comparison of different treatments at 25° C without percooling showed that concentrations of 200mg/lit Silver thiosulfate and 8-hydroxy chinolin citrate were extended the longevity of cut roses by to 4.75 days and at 25° C with percooling, concentrations of 400 mg/lit silver thiosulfate and 200 mg/lit 8-hydroxy chinolin citrate were extended the longevity of cut roses by to 4.5 days. Results of the first and second experiment years showed that with aging mother plants in second year in comparison to the first year, vase life of cut roses decreased significantly.