پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 127 |
| تعداد شمارهها | 7,196 |
| تعداد مقالات | 77,227 |
| تعداد مشاهده مقاله | 157,218,024 |
| تعداد دریافت فایل اصل مقاله | 118,403,675 |
Salicylic Acid and γ-Aminobutyric Acid Enhance Freezing Tolerance in Damask Rose (Rosa damascena): Physiological and Biochemical Insights | ||
| International Journal of Horticultural Science and Technology | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 11 اردیبهشت 1406 اصل مقاله (601.6 K) | ||
| نوع مقاله: Research paper | ||
| شناسه دیجیتال (DOI): 10.22059/ijhst.2025.397766.1127 | ||
| نویسندگان | ||
| Najmeh Zeinalipour* 1؛ Safoora Saadati2 | ||
| 1Shahid bahonar university of kerman | ||
| 2shahid bahonar university of kerman | ||
| چکیده | ||
| Salicylic acid (SA) and γ-aminobutyric acid (GABA) enhance freezing tolerance in Damask rose (Rosa damascena) through distinct biochemical and physiological mechanisms. This study evaluated foliar applications of SA (1 and 2 mM), GABA (20 and 50 mM), and distilled water (control) on five-year-old Rosa damascena plants under spring freezing stress in Bardsir, Iran, using a completely randomized design with three replications. SA at 2 mM significantly reduced membrane injury indices and malondialdehyde (MDA) levels in leaves and stems, while increasing proline, soluble carbohydrates, and total chlorophyll content for osmotic and photosynthetic stability. In flowers, SA at 2 mM increased petal weight, phenolic content, anthocyanins, and flavonoids. GABA at 20 mM provided moderate protection, but 50 mM was less effective, often comparable to the control. No significant effects were observed on flower diameter or essential oil content. Correlation analysis showed strong negative relationships between protective traits (e.g., proline, carbohydrates) and damage indicators (e.g., injury indices, MDA). SA at 2 mM exhibited superior efficacy in enhancing freezing tolerance, offering potential for improving yield and quality in cold-prone regions. | ||
| کلیدواژهها | ||
| Damask Rose؛ Freezing tolerance؛ Salicylic acid؛ Gamma-aminobutyric acid | ||
|
آمار تعداد مشاهده مقاله: 68 تعداد دریافت فایل اصل مقاله: 68 |
||
سامانه مدیریت نشریات علمی. قدرت گرفته از سیناوب