عنوان مقاله [English]
This research was carried out to investigate the genetic diversity among local Rosa damascena Mill. genotypes of Kurdistan province for flower yield and its components in Zale research station in 2014. Studied traits was measured on the 4 years old plants that were planted in a randomized complete blocks design with three replications and three plants in plot at appropriate times. Results showed significant difference (p≤0.01) among the genotypes, for flower yield and its components, plant height, number of leaves in plant, leaf length and width, number of flowers in plant, diameter of flower, fresh and dry weight of flowers and petals and the ratio of petal to flower weight, that could provide a basis for improvement of flower yield. Total mean of flower yield was 965.2 g in plant and the accessions of Kamyaran 1, Baneh 2, Saqez 1 and Sarv Abad1 with 1518.55, 1334.91, 1316.43 and 1262.88 g/plant respectively produced the highest flower yield. Flower yield showed a positive and significant correlation with flower number, plant height, number and length and width of leaves, flower diameter, fresh and dry weight of flowers and petals. Results of cluster analysis (CA) classification was in accordance with flower yield and ecological characteristics of genotypes. Results of principal component analysis (PCA) showed a high consistency with the CA result, but in terms of flower yield, its genotypic separation was more clear. In general, the accessions of Kamyaran1 is recommended as a superior genotype for development of Rosa damascene in Kurdistan province.