ارزیابی تأثیر قارچ Glomus intraradices بر ویژگی‌های کمی، کیفی گندم در شرایط تنش نیکل

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه زراعت، دانشگاه آزاد اسلامی، واحد ورامین- پیشوا، ورامین، ایران

2 استادیار، گروه زراعت، دانشگاه آزاد اسلامی، واحد ورامین- پیشوا، ورامین، ایران

چکیده

به منظور بررسی نقش قارچ قارچریشه (میکوریز) در کاهش خطر آلودگی فلز سنگین نیکل آزمایشی در سال 1394 در گلخانه‌ای در شهر ورامین روی گندم رقم SW انجام شد. این آزمایش به صورت فاکتوریل در قالب طرح کامل تصادفی با چهار سطح نیکل (0، 60، 120و 180 میلی­گرم بر کیلوگرم خاک) و دو سطح قارچ قارچریشه شامل (کاربرد و بدون کاربرد قارچ قارچریشه Glomus intraradices) در سه تکرار اجراء شد. نتایج به‌دست‌آمده از این پژوهش نشان داد، تأثیر کاربرد نیکل بر همۀ صفات مورد بررسی معنی­دار است. افزایش غلظت نیکل سبب کاهش ارتفاع گیاه، وزن خشک بوته، وزن خشک ریشه و محتوای سبزینۀ (کلروفیل) کل شد. درحالی‌که نیکل سبب افزایش میزان فعالیت آنزیم کاتالاز و محتوای نیکل در اندام‌های هوایی و ریشه­های گندم شد. همچنین کاربرد قارچریشه سبب افزایش ارتفاع گیاه، وزن خشک بوته، وزن خشک ریشه، محتوای سبزینۀ کل و محتوای نیکل ریشه شد و همچنین سبب کاهش فعالیت آنزیم کاتالاز و محتوای نیکل در اندام‌های هوایی بوته­های گندم شد. به‌طور کلی این آزمایش نشان داد، کاربرد قارچ قارچریشه می­تواند تأثیر مثبتی بر رفع تنش ناشی از فلز سنگین نیکل داشته باشد و می­تواند سبب کاهش آسیب تنش اکسایشی (اکسیداتیو) در گندم شود. 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of Glomus intraradices fungus on quantitative, qualitative traits of wheat under nickel stress

نویسندگان [English]

  • Hamid Reza Tohidi Moghadam 2
  • Pourang Kasraie 2
1 M. Sc. Student, Department of Agronomy, Islamic Azad University, Varamin, Varamin-Pishva Branch, Iran
2 Assistant Professor, Department of Agronomy, Islamic Azad University, Varamin, Varamin-Pishva Branch, Iran
چکیده [English]

In order to study effect of mycorrhiza fungi application to mitigate adverse effects of nickel (Ni), a greenhouse experiment was conducted in Varamin, Iran during 2015 growing season on wheat. The experiment was conducted as factorial based on a completely randomized design, with four levels of nickel (0, 60, 120 and 180 mg per kg of soil) and two levels of mycorrhiza fungi application (with and without mycorrhiza fungi application), in three replications. The results showed that the effect of nickel treatment was significant for all measured experimental traits. The increase of nickel contamination caused a significant decrease of plant height, total dry weight per plant, root dry weight per plant and total chlorophyll content whereas, increased catalase enzyme activity and the accumulation of nickel in leaves and roots. Also mycorrhiza fungi application increased plant height, total dry weight per plant, root dry weight per plant, total chlorophyll content and the accumulation of nickel in roots whereas, decreased catalase enzyme activity and the accumulation of nickel in shoots. Generally the results of the present study indicated that mycorrhiza fungi application reduces the harmful effects of nickel stress and decreased oxidative stress damage in wheat plant.

کلیدواژه‌ها [English]

  • catalase enzyme
  • mycorrhiza fungi
  • Nickel
  • Wheat
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