نوع مقاله : مقاله پژوهشی
کلیدواژهها
موضوعات
عنوان مقاله English
نویسندگان English
Damask rose (Rosa damascena Mill.) is one of the most important rose species, valued for its volatile compounds and medicinal properties in different industries. In modern agricultural sciences, elicitors are used to target signal molecules associated with plant defense responses and to increase the production of secondary metabolites, including aromatic essential oil compounds, in plants. An experiment was conducted using a randomized complete block design with three replications on damask rose bushes. Treatments with magnesium oxide nanoparticles (MgO-NPs) and methyl jasmonate (MeJA) were applied at the budding stage by foliar spraying. Results showed that, fourteen days after the second foliar treatment, MgO-NPs at 1000 mg L-1 concentration increased total chlorophyll content and carotenoids (by 1.61-fold and 1.39-fold, respectively) and polysaccharides (by 2.8-fold) in the treated leaves compared to the control plants. In contrast, MgO-NPs at 100 mg L-1 concentration increased H₂O₂ content (2-fold) in the leaves. Fourteen days after the second foliar treatment of methyl jasmonate, an increase in reducing sugar content (4-fold ) was observed in the leaves compared to the control plants. The highest content of phenylethyl alcohol (1.62-fold) was observed in the petals of fully open flowers treated with 0.1 mM methyl jasmonate. Our findings indicated that exogenous application of MeJA at low concentrations has a stronger effect than MgO-NPs in enhancing the content of secondary metabolites and phenylethyl alcohol in damask rose.
کلیدواژهها English
مجله پژوهشهای گیاهی (مجله زیست شناسی ایران)(علمی)