mparison the Effects of Arching and Traditional Training on the Yield and Quality of Two Cut Rose Cultivars in Soilless Culture Conditions

Today in modern greenhouse cultivations using the arching method, the architecture of rose shrub is affected by bending of primary stem, forming and suitable cutting of flower shoots and simultaneously bending of blind and low-valuable shoots. In order to study the effects of training methods on the yield and quality of cut roses in soilless culture condition, this research was conducted. This experiment was performed as a factorial on completely randomized design with two cultivars (‘Samurai’ and ‘Dolce Vita’) and two training methods treatment (arching and traditional method) with 3 replications, each of which included 5 plants. Characteristics were the number of days to flowering, length of flower stem, flower diameter, flower stem diameter, flower stem fresh weight, chlorophyll, carbohydrate and anthocyanin content, and root characteristics. The results showed that arching training resulted in increase the number of flowering shoot, flower stem diameter, flower diameter, flower stem fresh weight, anthocyanin and carbohydrate content, but no significant effect on day to flowering. Also the results revealed of this experiment showed that the arching method due to the distribution of carbohydrates produced by bending shoots and their transfer to roots increased the root length by 20 %, root volume by 185 %, root fresh weight by 207 % and root dry weight by 164 % compared to the traditional method.