The Effect of Silicon on the Growth Traits and Resistance of Zinnia (Zinnia elegans Jacq.) to Powdery Mildew Disease

محورهای موضوعی : مجله گیاهان زینتی

Seyyedeh Maryam Mirsafaye Moghaddam ¹ (M.Sc. Student, Department of Horticultural Science, Rasht Branch, Islamic Azad University, Rasht, Iran)
Mohammad Naghi Padasht Dahkaei ² (Horticulture Crops Research Department, Gilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran)

تاریخ دریافت : 1394/11/10 تاریخ پذیرش : 1395/02/09 تاریخ انتشار : 1395/06/11

کلید واژه: sodium silicate, Powdery Mildew, Silicon (Si), Zinnia (<i>Zinnia elegans</i> Jacq.),

چکیده مقاله :

To investigate the effects of silicon on the growth characteristics and the reduction of the powdery mildew damage to Zinnia (Zinnia elegans Jacq. ʻMagellanʼ), an experiment was carried out as a factorial experiment in the form of a randomized complete block design with two factors including eight treatments and three replications. The first factor included silicon concentrations at four levels (0, 50, 100, 150 mg L-1 Si) and the second factor consisted of the Si application methods (foliar spray and medium drenching). Depending on the concentration and method of silicon supplied, several horticultural traits were improved as a result of Si supplementation. Silicon content of Si-treated plants (100 and 150 mg L-1 Si foliar spray) significantly increased as compared with untreated controls. Disease severity of powdery mildew was reduced by sodium silicate. The results of our study demonstrated that foliar spray treatments were more effective in managing disease than drenches treatments.

چکیده انگلیسی:

به منظور بررسی اثرات سیلیسیم بر شاخص&rlm;های رشد و کاهش خسارت بیماری سفیدک پودری آهار (Zinnia elegans Jacq. ʻMagellanʼ)، آزمایشی به صورت فاکتوریل در قالب طرح بلوک&rlm;های کامل تصادفی با دو عامل در هشت تیمار و سه تکرار انجام گرفت. عامل اول، غلظت سیلیسیم در چهار سطح شامل 0، 50، 100، 150 میلی&rlm;گرم بر لیتر و عامل دوم، روش کاربرد در دو سطح شامل محلول&rlm;پاشی و خاکی بود. بر اساس غلظت و روش کاربرد سیلیسیم با کاربرد این ماده، چندین شاخص باغبانی گیاه بهبود یافت. میزان سیلیسیم گیاهان تیمار شده (100 و 150 میلی&shy;گرم بر لیتر سیلیسیم به روش محلول پاشی) در مقایسه با گیاهان شاهد به طور معنی&shy;داری افزایش یافت. شدت بیماری سفیدک پودری با کاربرد سیلیسیم کاهش یافت. نتایج مطالعه ما ثابت کرد که تیمارهای محلول پاشی نسبت به تیمارهای خاکی تاثیر بیشتری در کنترل بیماری دارند.&nbsp;&nbsp;

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