اثر مقادیر مختلف اوره بر برخی ویژگی‌های مورفولوژیک و فیتوشیمیایی گیاه دارویی کنگر فرنگی

نوع مقاله: پژوهشی

نویسندگان

1 دانش آموخته دکتری اکولوژی گیاهان زراعی دانشکده کشاورزی دانشگاه تبریز، تبریز، ایران

2 بخش تحقیقات فنی و مهندسی کشاورزی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان اصفهان، سازمان تحقیقات، آموزش و ترویج کشاورزی، اصفهان، ایران

10.22034/aej.2018.538933

چکیده

استفاده مناسب از کودهای نیتروژنی و بهینه نمودن مدیریت مصرف آن در گیاهان از اهمیت به سزایی برخوردار می­ باشد. در این راستا به منظور بررسی اثر مقادیر مختلف کود نیتروژنی بر برخی صفات مورفولوژیک و فیتوشیمیایی گیاه دارویی کنگر فرنگی، آزمایشی در قالب طرح بلوک­ های کامل تصادفی در شرایط مزرعه ­ای در اصفهان انجام شد. تیمارها کاربرد مقادیر مختلف کود نیتروژنی صفر، 100، 150 و 200 کیلوگرم در هکتار نیتروژن خالص از منبع اوره بودند. در این آزمایش صفات مورفولوژیکی شامل ارتفاع ساقه، تعداد برگ و کاپیتول در بوته و صفات کیفی از جمله مقدار فنل کل، فلاونوئید کل و فعالیت آنتی­ اکسیدانی اندازه­ گیری شدند. نتایج نشان داد که با افزایش مصرف کود اوره از صفر تا 200 کیلوگرم نیتروژن خالص در هکتار ارتفاع ساقه، تعداد برگ و کاپیتول در بوته افزایش یافت ولی میزان فنل کل، فلاونوئید کل و فعالیت آنتی­ اکسیدانی کاهش یافت. اگر چه نیتروژن یک عنصر ضروری برای رشد و توسعه این گیاه است اما به دلیل اینکه مصرف سطوح بالای کود شیمیایی نیتروژنی تاثیر منفی بر صفات کیفی این گیاه دارد و همچنین با توجه به آثار سوء زیست محیطی ناشی از مصرف بی­رویه کودهای شیمیایی، جهت حصول عملکرد کمی و کیفی مطلوب پیشنهاد می­ شود از کود اوره به میزان 100 کیلوگرم نیتروژن خالص در هکتار استفاده شود.

کلیدواژه‌ها


عنوان مقاله [English]

The effect of different urea rates on some morphological and phytochemical traits of artichoke

نویسندگان [English]

  • Marziyeh Allahdadi 1
  • Laleh Mosharraf Broujeni2 2
1 Ph. D. in Agro‌Ecology, Department of Plant Ecophysiology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
2 Agricultural Engineering Research Department, Isfahan Agricultural and Natural Resources Research and Education Center, AREEO, Isfahan, Iran
چکیده [English]

Proper application of N fertilizer and its optimization in plants is definitely important. To study the effect of different level of nitrogen fertilizer on some morphological and phytochemical traits of artichoke, an experiment was conducted in a randomized complete block design with three replications in field conditions during two consecutive years in Isfahan, Iran. Nitrogen fertilizer was applied in 100, 150, and 200 kg/ha net nitrogen from urea source. Morphological traits including stem height, number of leaves per plant and number of capitols per plant and phytochemical traits such as total phenol, total flavonoid and antioxidant activity were measured. Increasing of urea fertilizer rate from 0 to 200 kg/ha increased stem height, number of leaves and capitols per plant, but decreased total phenol and flavonoid and antioxidant activity. Although nitrogen is an essential element for growth and development of artichoke plant, the consumption of high levels of nitrogen fertilizer has negative effect on qualitative traits. Also, considering chemical fertilizers hazard in environment, it is recommended to use 100 kg/ ha N to achieve optimal yield in artichoke.

کلیدواژه‌ها [English]

  •  DPPH radical activity
  •  fertilizer management
  •  nitrogen fertilizer
  •  total flavonoid
  •  total phenol
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