The effects of soil cover and Stimplex (Ascophyllum nodosum extract) foliar application on antioxidant activity and some physiological characteristics of Coriandrum sativum L.

Document Type : Research Paper


1 Department of Agronomy and Plant Breeding, Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran.

2 Department of Biotechnology, Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran.


Two field experiments were conducted as factorial based on randomized complete block design to study the effects of soil covering (black, white, control), location (Sarab and Shabestr, Iran), and Stimplex foliar application levels (0, 2, 4 and 6 ml L-1) on growth and physiological traits of Coriandrum sativum. The highest values for essential oil, flavonoids and nitrogen contents were recorded for black covering at 2 ml L-1 foliar application of Stimplex. For phenolic compounds the highest values were observed with black covering at 2, 4 and 6 ml L-1 of foliar spray. In the city of Sarab, maximum values of root dry weight and essential oil content were obtained with 6 and 2 ml L-1 Stimplex spray, respectively. The best IC50 belonged to the white and black soil covers in Shabestar (1.6 and 1.7 mg ml-1, respectively). Foliar spray had significant effects on the above-ground biomass, plant height, axillary brunch number, umbel number, total soluble solids (TSS), phosphorus and potassium contents. Sarab had higher values than Shabestar for the nitrogen and potassium contents, axillary brunch number and TSS. Black soil cover had positive effects on K (%), P (%), TSS, chlorophyll a, umbel number per plant, plant height, axillary brunch number and above-ground biomass. In total, the results revealed that using black soil cover and foliar application of algal extract (2 ml.L-1) improved the growth and physiological responses of C. sativum plants.


Article Title [Persian]

تاثیر خاکپوش و محلول‌پاشی برگی با استیمپلکس (Ascophyllum nodosum) بر ویژگی‌های آنتی‌اکسیدانی و برخی ویژگی‌های فیزیولوژیک گشنیز

Abstract [Persian]

دو آزمایش جداگانه مزرعه­ای به صورت فاکتوریل و بر مبنای طرح بلوک­های کامل تصادفی به منظور مطالعه تاثیر خاکپوش (شاهد، سیاه و سفید)، محلول­پاشی برگی با غلظت­های مختلف کود استیمپلکس (صفر، 2، 4 و 6 میلی­لیتر در لیتر) و مکان (شهرستان­های سراب و شبستر) بر رشد و برخی صفات فیزیولوژیک گشنیز انجام شد. بالاترین محتوای اسانس، فلاونوئید، درصد نیتروژن، در تیمار خاکپوش سیاه + 2 میلی­لیتر در لیتر کود استیمپلکس و بالاترین محتوای فنل در تیمار خاکپوش سیاه در 2، 4 و 6 میلی­لیتر در لیتر کود استیمپلکس مشاهده شد. بیشترین وزن خشک ریشه و محتوای اسانس به ترتیب در سطوح 6 و 2 میلی­لیتر در لیتر کود استیمپلکس در شهرستان سراب مشاهده شد. بهترین میزان IC50 در شهرستان شبستر در تیمارهای خاکپوش سیاه و سفید (به ترتیب 6/1 و7/1 میلی­گرم در میلی­لیتر)مشاهده شد. تیمار محلول­پاشی اثر معنی­داری بر بیوماس هوایی گشنیز، ارتفاع گیاه، تعداد شاخه­­های جانبی، تعداد چتر در بوته، محتوای مواد جامد محلول کل و محتوای فسفر و پتاسیم داشت. تعداد شاخه­جانبی، محتوای مواد جامد محلول و محتوای نیتروژن و پتاسیم بیشتری در شهرستان سراب نسبت به شبستر ثبت شد. خاکپوش سیاه موجب افزایش درصد پتاسیم و فسفر، محتوای مواد جامد محلول کل، کلروفیل a، تعداد چتر در بوته، بیوماس هوایی، تعداد شاخه­­های جانبی و ارتفاع گیاه شد. در کل نتایج حاصل از آزمایش انجام شده نشان داد که استفاده از خاکپوش سیاه و محلول­پاشی با عصاره جلبک (2 میلی­لیتر در لیتر) موجب افزایش رشد و بهبود صفات فیزیولوژیک گشنیز گردید.

Keywords [Persian]

  • پیش تیمار
  • خصوصیات رشدی
  • زوال بذر
  • گیاهچه صفات بیوشیمیایی
  • هیبریدهای
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