The quantity and quality of essential oil, yield and yield components of seven genotypes of rose (Rosa damascene Mill.) in Fars Province

In order to identify the best genotypes of rose (Rosa damascene Mill.), a field experiment was conducted in a randomized completely blocks design with seven treatments and three replications. Flower number, flower fresh weight, yield, petal fresh weight, petal to flower fresh weight ratio, petal number, flower diameter, flowering period, essential oil weight were investigated for seven genotypes of rose (Fars1, Fars2, Darab1, Darab2, Darab3, Estahban1, Meymand). Essential oil was obtained by distillation method and essential oil composition was determined by GC and GC/MS. Data analysis was performed by SAS and Jamp4. According to the results of mean comparisons, the highest yield and flower number were recorded for Darab1, Meymand and Fars2, while the highest amount of essential oil was obtained for Maymand and Fars2. A positive and significant correlation was also found between yield and flower number, leading to the increased essential oil. Citronellol, neral, and n-nonadecane were identified as the major components of the essential oil, respectively found in Darab1, Darab3, and Estahban1.