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.

To study the effects of the bulb storage conditions on the growth and bulb production of lily, a factorial experiment based on a completely randomized design with two cultivars (the Tiber and Donato), three storage temperatures (-2 °C, 4 °C, and ambient temperature), and three storage durations (4, 8, and 12 weeks) was performed. Bulb sprouting percentage, days to bulb sprouting, number of leaves, leaf area, bulb weight, propagation rate, plant height, stem diameter, days to bud emergence, number of buds, bulb size, and number of scales were evaluated. The results showed that the lowest number of days to bulb sprouting and days to bud emergence, the highest bulb sprouting percentage, plant height, stem diameter, leaf area, bulb weight, bulb size, and propagation rate were observed in Donato cultivar. Tiber cultivar showed the highest number of buds, number of leaves, and number of scales. The minimum number of days to bulb sprouting and days to bud emergence, the highest bulb sprouting percentage, bulb weight, bulb size, number of scales, and propagation rate obtained by storing the bulbs at 4 °C for 12 weeks. In conclusion, 12 weeks storage of the bulbs at 4 °C was the best condition for propagation of two studied lily cultivars.