Comparison of Stability Parameters for Detection of Stable and High Essential Oil Yielding Landraces of Rosa damascena Mill.
محورهای موضوعی : مجله گیاهان زینتیBayzid Yousefi 1 , Sayed Reza Tabaei Aghdaei 2
1 - Associate professor, Research Division of Natural Resources, Kurdistan Agricultural and Natural Resources Research and Education Center, AREEO, Sanandaj, Iran.
2 - Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
کلید واژه: Adaptation, Essential oil, <i>Rosa damascena</i> Mill, Stability parameter,
چکیده مقاله :
The essential oil yield stability of damask rose (Rosa damascena Mill.) as an important medicinal and aromatic plant in different environments has not been well documented. In order to determine appropriate stability parameters, six statistics were studied for essential oil stability of 35 Rosa damascena landraces in seven locations (Sanandaj, Arak, Kashan, Dezful, Stahban, Kerman, and Mashhad) and two years (2007-2008) in Iran, using a randomized complete blocks design with three replications. Significant differences (P<0.01) were observed in essential oil ratio among landraces (G), locations (L), and environments (E) and in landrace × location (GL) and landrace × environment (GE) interactions. The positive correlation of environmental variance (S2), coefficient of variation (CV), and regression coefficient of yield over environments (b) with essential oil suggest that only low-yield landraces develop a similar phenotype over a range of environments and show static stability. Although there were not any stable landraces by b (b ≈ 0) and all of the stable ones by S2 produced very low yields, some of the adaptable ones by CV (e.g. KM1) showed high essential oil ratios and stability simultaneously. The stable landraces according to the dynamic stability concept (b ≈ 1, Sd2 or variance due to deviation from regression ≈ 0) produced moderate essential oil. Superiority index (P) determined some of the highest essential oil as adaptable landraces. The stable landraces with the least variance of the years within places (MSY/P) produced the least essential oil. It could be concluded that a genotype can demonstrates both static and dynamic stability with high essential oil content. In addition, CV, dynamic view statistics (b ≈ 1, Sd2≈ 0), and P are proposed as desirable parameters for the evaluation of essential oil stability with different concepts in damask rose genotypes.
پایداری تولید اسانس گل در ژنوتیپهای گل محمدی بهعنوان یکی از مهمترین گیاهان دارویی و معطر ایران، هنوز کاملا بررسی و مستند نشده است. بهمنظور مقایسه آمارههای تشخیص پایداری عملکرد اسانس، شش آماره متفاوت برای 35 ژنوتیپ گل محمدی (Rosa damascena) کشور، کاشت شده بهصورت طرح بلوکهای کامل تصادفی با سه تکرار در هفت استان (کردستان، مرکزی، اصفهان، خوزستان، فارس، کرمان و خراسان) و دو سال (2007 و 2008) ارزیابی شد. اختلاف معنیداری (01/0P<) از لحاظ بازده اسانس بین ژنوتیپها (G)، مکانها (L)، محیطها (E) و نیز برای اثرات متقابل ژنوتیپ × مکان (GL) و ژنوتیپ× محیط (GE) مشاهده شد. همبستگی مثبت بین واریانس محیطی (S2)، ضریب تغییرات (CV) و ضریب رگرسیون عملکرد بر محیط (b) با بازده اسانس دلالت داشت که فقط ژنوتیپهای با اسانس پایین فنوتیپ مشابهی را در محیطهای مختلف دارند که این همان پایداری استاتیکاست. ژنوتیپ پایداری با مفهوم استاتیک رگرسیون(b ≈ 0) وجود نداشت و ژنوتیپهای پایدار (Stable) با S2 هم اسانس بسیار اندکی داشتند، اما برخی ژنوتیپهای سازگار با CV (مانند KM1) همزمان عملکرد بالا و پایداری عملکرد داشتند. ژنوتیپهای پایدار با مفهوم دینامیک (b ≈ 1 و 0≈Sd2 واریانس انحرافات از خط رگرسیون برابر صفر) عملکرد اسانس متوسطی داشتند. شاخص برتری(P) ژنوتیپهای با بالاترین اسانس را بهعنوان سازگار معرفی نمود. ژنوتیپهای پایدار با کمترین واریانس سال در مکان (MSY/P)، حداقل اسانس را تولید کردند. میتوان نتیجه گرفت که ژنوتیپ گل محمدی میتواند همزمان دارای پایداری استاتیک، دینامیک و عملکرد اسانس بالا باشد. در مجموع آماره ضریب تغییرات (CV)، جنبه دینامیک آمارههای رگرسیون (b ≈ 1, Sd2≈ 0) و شاخص برتری (P) بهعنوان پارامترهای مطلوب برای ارزیابی جنبه های مختلف (استاتیک و دینامیک) پایداری اسانس در گلمحمدی پیشنهاد میشوند.
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