نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، گروه تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی رامین خوزستان، ملاثانی، ایران.

2 استاد، گروه تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران.

3 دانشیار، گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی رامین خوزستان، ملاثانی، ایران.

4 دانشیار، گروه تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، ایران.

چکیده

به‌منظور بررسی اثر قارچ پریفورموسپورا ‎ایندیکا (Piriformospora indica) و سطوح مختلف سالیسیلیک‌اسید بر خصوصیات مورفولوژیکی و فعالیت آنزیم‏های آنتی‌اکسیدانت در آویشن باغی (.Thymus vulgaris L) تحت تیمار قطع آبیاری، آزمایشی به‌صورت اسپلیت فاکتوریل در قالب طرح پایه بلوک‎های کامل تصادفی و با چهار تکرار در مزرعه‌ای واقع در دهلران در سال زراعی 95-1394 انجام گرفت. تیمارهای آزمایش شامل چهار‏ سطح سالیسیلیک‌اسید (صفر، 150، 300، 600 میکرومولار) به‌صورت محلول‌پاشی برگی و قارچ شبه‌مایکوریزا دردو سطح تلقیح و عدم تلقیح و عامل قطع آبیاری آب در سه سطح (آبیاری در 90، 50 و 30 درصد ظرفیت زراعی) بودند. در این آزمایش تیمار قطع آبیاری تا سطح 30 درصد ظرفیت زراعی باعث کاهش ارتفاع، وزن کل اندام هوایی، تعداد برگ، درصد کلونیزاسیون و هم‌چنین میزان فعالیت آنزیم‌های کاتالاز و پراکسیداز شد. تلقیح با قارچ و تیمار با سالیسیلیک‌اسید تا غلظت 300 میکرومولار توانست تا حدود زیادی از اثرات مخرب تیمار قطع ‏آبیاری بر این صفات بکاهد، اما افزایش غلظت سالیسیلیک‌اسید تا سطح 600 میکرومولار باعث تشدید اثرات تیمار قطع آبیاری شد و مانع از بروز اثرات مثبت قارچ شد.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of Pre formormospora indica and Foliar Application of Salicylic Acid on morphological characteristics and antioxidant enzymes of thyme irrigation cut-off stress

نویسندگان [English]

  • mrs Somayeh Mirzaei 1
  • Seyed Ataollah Siadat 2
  • Babak pakdaman sardrod, 3
  • Mohammad Moradi Telavat 4

1 Ph.D. Candidate, Department of Production and Genetics, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran.

2 Professor, Department of Production and Genetics, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran.

3 Associate Professor, Department of Plant Protection, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran.

4 Associate Professor, Department of Production and Genetics, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan, Mollasani, Iran.

چکیده [English]

In order to investigate the effect of Piriformospora indica and different levels of salicylic acid on morphological characteristics and activity of antioxidant enzymes of thyme (Thymus vulgaris L.) irrigation cut-off stress, an experiment has been conducted in the water year 2016. It has employed a split factorial experiment based on randomized complete block design with four replications in the research farm of Dehloran Agricultural Research Center. The treatments are consisted of four levels of salicylic acid (0, 150, 300, and 600 μm) as foliar application and a mycorrhiza fungus agent at two levels of inoculation and non-inoculation and irrigation cut-off stress at three levels (irrigation at 90%, 50%, and 30% filed capacity). The results of this study show that with increasing irrigation cut-off stress up to 30% filed capacity plant height, total weight of shoot, number of leaves, colonization percentage, and the enzymes Catalase and Peroxidase have decreased. Inoculation and treatment with salicylic acid up to a concentration of 300 μM could significantly reduce the destructive effects of irrigation cut-off stress on these traits. However, increasing the concentration of salicylic acid to the level of 600 μM intensifies the effects of irrigation cut-off stress, preventing the positive effects of the fungus.

کلیدواژه‌ها [English]

  • Catalase
  • Colonization
  • Coexistence
  • Mycorrhiza-like
  • Peroxidase
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