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بررسی تغییرات ترکیب‌های فنلی و قابلیت دگرآسیبی ترشک (Rumex turcomanicus Czerep.) در غلظت‌های مختلف عصاره‌های متانولی و اتانولی حاصل از اندام هوایی و زمینی بر گیاهچه کاهو (Lactuca sativa L.) | ||
| تحقیقات گیاهان دارویی و معطر ایران | ||
| مقاله 2، دوره 31، شماره 6 - شماره پیاپی 74، بهمن 1394، صفحه 919-930 اصل مقاله (315.02 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijmapr.2016.105882 | ||
| نویسندگان | ||
| مرتضی علیرضایی نقندر* 1؛ مجید عزیزی2؛ پریسا طاهری3؛ محمدصادق صادقی4 | ||
| 1دانشجوی دکتری، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، ایران | ||
| 2دانشیار، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، ایران | ||
| 3فارغ‌التحصیل کارشناسی ارشد، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، ایران | ||
| 4فارغ‌التحصیل کارشناسی ارشد، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه تبریز، ایران | ||
| چکیده | ||
| به‌منظور مطالعه پتانسیل دگرآسیبی و تعیین رابطه آن با تغییرات ترکیب‌های فنلی، در غلظت‌های مختلف عصاره‌های متانولی و اتانولی حاصل از اندام هوایی و زمینی ترشک (Rumex turcomanicus Czerep.) بر خصوصیات جوانه‌زنی و رشد گیاهچه کاهو (Lactuca sativa L.)، آزمایش فاکتوریل بر مبنای طرح کاملاً تصادفی شامل دو قسمت از اندام گیاه (ریشه و اندام هوایی)، دو حلال عصاره‌گیری (متانول و اتانول) و در شش غلظت مختلف عصاره (0، 25/31، 5/62، 125، 250 و 500 پی‌پی‌ام) در سال 1392 در محل دانشکده کشاورزی دانشگاه فردوسی مشهد انجام شد. پس از آماده‌سازی عصاره‌ها، اثر بازدارندگی آنها بر مؤلفه‌های جوانه‌زنی بذر و رشد گیاهچه کاهو مورد بررسی قرار گرفت. همچنین میزان ترکیب‌های فنلی در غلظت‌های مختلف هر یک از عصاره‌ها تعیین گردید. نتایج نشان از اثر بازدارندگی بالاتر عصاره‌های متانولی در مقایسه با عصاره‌های اتانولی، و بازدارندگی بیشتر عصاره‌های حاصل از ریشه در مقایسه با عصاره‌های اندام هوایی بر اغلب صفات مورد مطالعه داشت. در میان غلظت‌های مختلف عصاره، بیشترین بازدارندگی در غلظت 500 پی‌پی‌ام و کمترین بازدارندگی در غلظت صفر پی‌پی‌ام بدست آمد. میزان ترکیب‌های فنلی در عصاره‌های متانولی بیشتر از عصاره‌های اتانولی و در عصاره‌های ریشه بیشتر از عصاره‌های اندام هوایی بود. همچنین با افزایش غلظت عصاره افزایش معنی‌داری در میزان ترکیب‌های فنلی دیده شد. بررسی همبستگی بین میزان ترکیب‌های فنلی و پتانسیل آللوپاتی عصاره ترشک حکایت از رابطه مثبت و معنی‌دار تغییرات ترکیب‌های فنلی با قابلیت دگرآسیبی ترشک داشت. | ||
| کلیدواژه‌ها | ||
| آللوپاتی؛ بازدارندگی؛ ترکیب‌های فنلی؛ عصاره | ||
| عنوان مقاله [English] | ||
| Phenolic changes and allelopathic potential in different concentrations of methanolic and ethanolic extracts from root and shoot of Rumex turcomanicus Czerep. on lettuce (Lactuca sativa L.) seedling | ||
| نویسندگان [English] | ||
| M. Alirezaie Noghondar1؛ M. Azizi2؛ P. Taheri3؛ M.S. Sadeghi4 | ||
| 1Ph.D. student, Department of Horticulture, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| 2Department of Horticulture, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| 3Department of Horticulture, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| 4Department of Horticulture, Faculty of Agriculture, University of Tabriz, Tabriz, Iran | ||
| چکیده [English] | ||
| To investigate the allelopathic potential and its relation with phenolic changesin different concentrations of methanolic and ethanolic extracts from root and leaf of Rumex turcomanicus Czerep.on seed germination and seedling growth of lettuce (Lactuca sativa L.), a factorial experiment based on completely randomized design was conducted at the Faculty of Agriculture, Ferdowsi University of Mashhad, Iran, in 2013. Treatments included different organs of Rumex turcomanicus Czerep (root and leaf), two extraction solvents (methanol and ethanol), and six concentrations of extract (0, 31.25, 62.5, 125, 250 and 500 ppm), whose effects were studied on seed germination and seedling growth of lettuce. The extracts were placed in petri dishes in three replicates and 25 seeds (lettuce) per replicate. Phenolic content was measured in each extract. The results showed higher inhibition in methanoilc extracts as compared with ethanolic extracts and higher inhibition in root extract as compared with leaf extracts on seed germination and most of seedling the growth traits. Among different concentrations, maximum and minimum inhibition were observed in 500 and 0 ppm of extracts, respectively. Phenolic content was greater in methanolic as compared with ethanoilc extracts and was higher in root extracts as compared with leaf extracts. In addition, phenolic content was increased with increasing of extract concentration. A positive and significant correlation was observed between phenolic content and allelopathic potential. | ||
| کلیدواژه‌ها [English] | ||
| Allelopathy, inhibiton, Phenolic compound, extraction | ||
| مراجع | ||
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