تأثیر کم‌آبیاری و اسید سالیسیلیک بر اسانس و آنزیم‌های آنتی‌اکسیدان در گیاه رازیانه

نوع مقاله: مقاله پژوهشی

نویسندگان

1 کارشناس ارشد، گروه زراعت، دانشکدۀ کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران

2 دانشیار گروه زراعت، دانشکدۀ کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران

چکیده

به‌منظور بررسی تأثیر اسید سالیسیلیک بر خصوصیات فیزیولوژیکی و بیوشیمیایی گیاه رازیانه (Foeniculum vulgare Mill.) تحت شرایط کم‌آبی، آزمایشی به‌صورت کرت‌های خردشده در قالب طرح مربع لاتین با سه تکرار، در مزرعۀ تحقیقاتی دانشگاه شهید باهنر کرمان در سال 1391 به اجرا درآمد. فاکتور اصلی، آبیاری در سه سطح (50، 75 و 100 درصد ظرفیت زراعی)؛ و فاکتور فرعی، غلظت اسید سالیسیلیک در سه سطح (صفر، 5/0 و یک میلی‌مولار) درنظر گرفته شد. محلول‌پاشی اسید سالیسیلیک در مرحلۀ چهاربرگی و قبل از اعمال تیمار آبیاری انجام گرفت. کم‌آبیاری سبب کاهش معنادار عملکرد دانه، درصد و عملکرد اسانس و افزایش معنادار آنزیم‌های سوپراکسید دیسموتاز و گایاکول پراکسیداز نسبت به تیمار شاهد شد. با افزایش غلظت اسید سالیسیلیک، افزایش معناداری در عملکرد دانه، درصد و عملکرد اسانس و آنزیم‌های سوپراکسید دیسموتاز و گایاکول پراکسیداز نسبت به تیمار شاهد دیده شد. همچنین اثر متقابل کم‌آبیاری در اسید سالیسیلیک بر عملکرد دانه، عملکرد اسانس و آنزیم‌های آنتی‌اکسیدان معنادار بود. افزایش آنزیم‌های آنتی‌اکسیدان نشان‌دهندۀ کاهش خسارت اکسیداتیو و نقش اسید سالیسیلیک در افزایش تحمل رازیانه در برابر کمبود آب است.
 
 
 

کلیدواژه‌ها


عنوان مقاله [English]

Effects of water deficit and salicylic acid on essential oil and antioxidant enzymes of fennel (Foeniculum vulgare Mill.)

نویسندگان [English]

  • Fatemeh Salarpour Ghoraba 1
  • Hasan Farahbakhsh 2
1 Former M.Sc. Student, Department of Agronomy, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
2 Associate Professor, Department of Agronomy, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
چکیده [English]

To investigate SA effects on physiological and biochemical characteristics of fennel (Foeniculum vulgare Mill) under water deficit, a split plot experiment based on latin square design with three replications was carried out at research farm of Shahid Bahonar University of Kerman in 2012. Three levels of water deficit (50, 75 and 100 percent of field capacity) and 3 concentrations of SA (0, 0.5 and 1mM) were considered as main and sub plots, respectively. Foliar application of SA was performed at 3 to 4 leaves growth stages and before application of Irrigation. The obtained results showed that water deficit reduced grain yield, essential oil content and percentage while the amount of superoxide dismutase and guaiacol peroxidase increased significantly compared to control. Increasing in concentration of salicylic acid led to a significant increase in grain yield, essential oil content, essential oil yield, superoxide dismutase and guaiacol peroxidase compared to control. Interaction of water deficit and SA on grain yield, essential oil yield and antioxidant enzymes were significant. Increasing in antioxidant enzymes indicates reduction in oxidative damage and implies SA roles in tolerance of fennel under water deficit.
 
 

کلیدواژه‌ها [English]

  • biochemical traits
  • Essential oil yield
  • guaiacol peroxidas
  • Physiological traits
  • superoxide dismutase
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