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بررسی تأثیر سطوح مختلف جیبرلیک اسید و سالیسیلیک اسید بر بهبود جوانه‌زنی گیاه Festuca arundinacea تحت تنش با ترکیبات آللوپاتیک | ||
| نشریه محیط زیست طبیعی | ||
| مقاله 6، دوره 67، شماره 4، دی 1393، صفحه 415-424 اصل مقاله (168.13 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jne.2014.53070 | ||
| نویسندگان | ||
| مرتضی صابری1؛ علی طویلی* 2؛ مرتضی میری3 | ||
| 1عضو هیئت علمی دانشگاه زابل | ||
| 2دانشیار دانشکدۀ منابع طبیعی، دانشگاه تهران | ||
| 3دانشجوی کارشناسی ارشد محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان | ||
| چکیده | ||
| این آزمایش برای بررسی اثر ترکیبات آللوپاتیک اکالیپتوس ((Eucalyptus camaldulensis بر جوانه‌زنی بذر و رشد گیاهچههای Festuca arundinaceaدر شرایط آزمایشگاهی انجام گرفت تا میزان تأثیر ترکیبات آللوپاتیک و همچنین تأثیر پیش‌تیمار با جیبرلیک اسید و سالیسیلیک اسید بر کنترل خسارت ترکیبات آللوپاتیک تعیین شود. محرک‌های شیمیایی استفاده‌شده عبارت بودند از: سه سطح جیبرلیک اسید و سه سطح سالیسیلیک اسید و 5 غلظت از ترکیبات آللوپاتیک عصارۀ اکالیپتوس که به‌صورت آزمایش فاکتوریل در قالب طرح پایه کاملاً تصادفی در چهار تکرار اجرا شد. نتایج حاصل از تجزیۀ واریانس و مقایسۀ میانگینها نشان داد که عصارۀ اکالیپتوس اثر آللوپاتیک بازدارنده بر جوانه‌زنی بذر و رشد اولیۀ گیاهچههای Festuca arundinaceaدارد. استفاده از محرک‌های شیمیایی به‌صورت پیش‌تیمار سبب افزایش رشد گیاهچههای Festuca arundinaceaشد. اثر متقابل سطوح آللوپاتی و پیش‌تیمار با محرک‌های شیمیایی بر تمامی صفات اندازه‌گیری شده معنادار بود. | ||
| کلیدواژه‌ها | ||
| آللوپاتی؛ اکالیپتوس؛ جوانه‌زنی؛ محرک‌های شیمیایی؛ Festuca arundinacea | ||
| عنوان مقاله [English] | ||
| Investigation the effects of different levels of gibberellic and salicylic acid on improvement of germination indices of Festuca arundinacea under stress with allelopathic compound | ||
| نویسندگان [English] | ||
| Morteza Saberi1؛ Ali Tavili2؛ Morteza Miri3 | ||
| 1Scientific Member, University of Zabol | ||
| 2Assoc. Prof., Natural Resources Faculty, University of Tehran | ||
| 3MSc Student in Environment, Agricultural and Natural Resources University of Gorgan | ||
| چکیده [English] | ||
| The aim of this study was to investigate the allelopathic effects of Eucalyptus camaldulensis on germination and early seedling growth of Festuca arundinacea under laboratory condition in order to determine the effect of pretreatments on decreasing the destructive effects of allelopathic compounds. The chemical stimulators used in this study included 3 levels of gibberellic acid, 3 levels of salicylic acid and 5 levels of allelopathic compounds of Eucalyptus camaldulensis. Factorial test in the completely randomized design with four treatments was used to analyse the data. Results indicated that Eucalyptus camaldulensis extract had inhibitive effect on germination and early seedling growth of Festuca arundinacea. Early seedling growth of Festuca arundinacea increased by pretreatment of seeds in chemical stimulators. Interaction effects of allelopathic and pretreatment with chemical stimulators were significance on germination percentage and speed, root, shoot and plant length and seed vigor index. | ||
| کلیدواژه‌ها [English] | ||
| Allelopathy, germination, Chemical stimulators, Eucalyptus camaldulensis, Festuca arundinacea | ||
| مراجع | ||
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