رضا طبایی عقدایی
ضیاء آزدو
ابوالفضل نصرالهی
علی فرمهینی
غلامرضا گودرزی
مصطفی زارع

To evaluate genetic potential for production yield increase and resistant variety selection in Rosa damascena Mill. an experiment was conducted using a randomized complete blocks design with three replications. Rosa damascena Mill. genotypes were collected from areas in province of Iran, and cultivated in at the experimental field of Ali Abad Medicinal Plants Station, Arak, Iran. Different traits were evaluated in relation with adaptability and the results showed significant differences in time (year), genotype treatments and time * genotype. The highest amounts of height and flowering period were detected in Isfahan genotype. The highest amount of flower yield and flower dry weight percentage were observed in west Azarbaijan genotype and the highest amounts of flower number per plant, flowering period, the most pest resistance and flower number in Isfahan and this genotype was known as the best quality. In regard to important of genetic variation for flower yield increase and its necessity in plant breeding based on resistance to pests and adaptation to environmental conditions, selection of superior genotypes could be useful in genetic improvement of Rosa damascena Mill. for yield increase in order to achieve appropriate quantity and quality in flower and oil production. Keywords: Adaptability, Diversity, Flower yield, Genetic potential, Rosa damascena Mill.

رزا,ژنوتیپ ها,سازش پذیری,تنوع ژنتیکی,عملکرد زراعی