تأثیر محلول‌پاشی فولویک اسید و سالیسیلیک اسید بر برخی ویژگی‌های رشدی و فیزیولوژیکی و محتوای اسانس آویشن باغی (Thymus vulgaris L.)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده کشاورزی، دانشگاه تبریز

2 گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه تبریز

3 3- گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه تبریز.

4 دکتری علوم باغبانی، دانشکده کشاورزی، دانشگاه تبریز

چکیده

اهداف: این پژوهش با هدف بررسی تأثیر اسیدسالیسیلیک و اسید فولویک بر تعدادی از شاخص‌های رشدی و محتوای اسانس در گیاه آویشن باغی در شرایط ایستگاه تحقیقاتی خلعت‌پوشان دانشگاه تبریز انجام گرفت.
مواد و روش‌ها: این آزمایش به‌صورت فاکتوریل، در قالب طرح کاملاً تصادفی اجرا شد. فاکتور اول و دوم به ترتیب شامل اسیدفولویک در غلظت‌های (0، 1، 5/1، 2 میلی‌گرم در لیتر) و اسیدسالیسیلیک در غلظت‌های (0، 10، 50 و 100 میکرومولار) بود. پس از انجام محلول‌پاشی و برداشت، وزن ‌تر و خشک گیاه، رنگیزه‌های فتوسنتزی، غلظت فلاونوئید کل، ظرفیت آنتی‌اکسیدانی کل و مقدار اسانس اندام هوایی اندازه‌گیری شد.
یافته‌ها: غلظت‌های مختلف اسید فولویک بر خصوصیات رشدی از جمله ارتفاع گیاه، وزن تر و خشک اندام هوایی و درصد ماده خشک و همچنین غلظت کلروفیل اثر معنی‌دار داشت. همچنین اسیدسالیسیلیک تأثیر افزایشی معنی‌داری بر وزن، فعالیت آنتی‌اکسیدانی کل، فلاونوئید و محتوای اسانس داشت. در غلظت 1.5 میلی‌گرم در لیتر اسیدفولویک، بالاترین میزان ارتفاع و عملکرد تر و خشک گیاه و بالاترین غلظت کلروفیل b مشاهده شد. همچنین اثر متقابل اسیدسالیسیلیک و اسیدفولویک بر عملکرد تر و خشک گیاه نیز تأثیر معنی‌داری نشان داد. بالاترین فعالیت آنتی‌اکسیدانی کل و فلاونوئید در غلظت 100 میکرومولار اسید سالیسیلیک به‌دست‌آمد. بیشترین محتوای اسانس، در غلظت 50 میکرومولار اسید سالیسیلیک به دست آمد.
نتیجه‌گیری: به‌منظور تولید بیشترین عملکرد گیاه، کاربرد غلظت 50 میکرومولار اسیدسالیسیلیک و اسیدفولویک با غلظت 1.5 میلی‌گرم بر لیترمناسب به نظر می‌رسد. همچنین برای دستیابی به بالاترین محتوای اسانس شاخساره و برگ، غلظت 50 میکرومولار اسیدسالیسیلیک پیشنهاد می‌شود

کلیدواژه‌ها


عنوان مقاله [English]

Salicylic Acid and Fulvic Acid foliar application influence the Growth, Some Physiological re-sponses and Essential Oil Content of Thymus vulgaris L.

نویسندگان [English]

  • Saeideh Alizadeh Salteh 1
  • Afsane Nasiri Kaleibar 2
  • Fariborz Zaare-Nahandi 3
  • Mohammad Adlipour 4
1 Faculty of agriculture, University of Tabriz
2 Dept. of Horticulture, Faculty of Agriculture, University of Tabriz, Iran
3 Dept. of Horticulture, Faculty of Agriculture, University of Tabriz, Iran
چکیده [English]

Background & Objective: This study aimed to investigate the effect of salicylic acid and fulvic acid foli-ar use on some growth responses and essential oil content of thyme.
Materials & Methods:
A factorial experiment as completely randomized design with three replications was conducted. The first and second factors included: fulvic acid (0,1,1.5,2 mg/l) and salicylic acid (0,10,50,100 µM). After spray-ing and harvesting, the following factors were evaluated; fresh and dry weight, photosynthetic pigments, flavonoids, total antioxidants activity, and essential oil content of the aerial parts.

Results: Foliar treatments significantly influenced plant height, fresh and dry weight biomass as well as chlorophyll b content. Also, salicylic acid had a significant effect on yield traits such as fresh weight, total antioxidant activity, flavonoids and essential oil content. The interactions of salicylic acid and fulvic acid on fresh and dry weight also showed a significant effect. The highest total antioxidants activity and flavo-noids were obtained at 100 µM salicylic acid. The highest essential oil content was obtained at of 50 µM salicylic acid.

Conclusion: In order to produce the highest yield of the plant, the application of 50 μM concentrations of salicylic acid and fulvic acid with a concentration of 1.5 mg/l seems appropriate. Also, to achieve the highest essential oil content of shoots and leaves, a concentration of 50 μM salicylic acid is recommend-ed.

کلیدواژه‌ها [English]

  • Essential oil
  • salicylic acid
  • thyme
  • yield
  • fulvic acid
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