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تأثیر تغذیۀ سن گندم (Eurygaster integriceps Put.; Het.: Scutelleridae) زمستان‌گذران بر جذب مواد غذایی گندم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه زنجان

2 استادیار گروه گیاه‌پزشکی دانشکدۀ کشاورزی، دانشگاه زنجان

چکیده

در این پژوهش، تأثیر تغذیۀ سن گندم بر میزان جذب سه عنصر نیتروژن، فسفر و پتاسیم در گندم رقم فلات در محیط کشت بدون خاک بررسی شد. تراکم‌های صفر (شاهد)، یک، دو و سه عدد سن از نسل زمستان‌گذران در مراحل پنجه‌زنی و ساقه‌دهی به مدت ده روز روی هر بوته گندم قرار داده شد. آزمایش‌ها در گلخانه‌ای با شرایط دمایی 3±26 درجۀ سلسیوس، رطوبت نسبی بیش از 45 درصد و در نور طبیعی انجام گرفت. نتایج تجزیۀ عناصر گیاهان تیمارشده با سن‌های زمستان‌گذران نشان داد که میزان جذب نیتروژن گیاهان تحت تأثیر مراحل فنولوژیکی گیاه (001/0p<)، اثر متقابل جنسیت و تراکم سن‌ها (001/0p<) و اثر متقابل مرحلۀ فنولوژیکی گیاه و جنسیت سن‌ها (05/0p<) است. بیشترین میزان تأثیر در جهت کاهش میزان جذب در مرحلۀ ساقه‌دهی و تراکم دو عدد سن‌های نر مشاهده شد. مرحلۀ فنولوژیکی، تراکم حشرات کامل و جنسیت سن‌ها روی مصرف فسفر تأثیر معناداری داشت (05/0p<). بیشترین تأثیر کاهش در تراکم 2 عدد سن ماده در مرحلۀ ساقه‌دهی مشاهده شد. مصرف پتاسیم تحت تأثیر هیچ‌کدام از اثرات متقابل قرار نگرفت. با توجه به تغییرات قابل توجه نیتروژن، به نظر می‌رسد پارامتر بهتری برای ارزیابی تأثیرات تغذیۀ سن گندم بر مصرف مواد غذایی باشد.

کلیدواژه‌ها


عنوان مقاله [English]

The effect of overwintering adult Sunn pest, Eurygaster integriceps Put.(Het.Scutelleridae), feeding on wheat nutrient uptake

نویسندگان [English]

  • Ehsan Ghaemmaghami 1
  • Morteza Movahedi Fazel 2
  • Alireza Vaezi 2
1 zanjan university
2 Assistant Professor of Plant Protection Department, Agricultural College, Zanjan University
چکیده [English]

In this research, the effects of Sunn pest feeding in different densities were studied on root uptake of NPK in Falat wheat variety. For this purpose, densities of 0 (as control), 1, 2 and 3 adult per plant released on wheat at both tillering and stem elongation stages. Plants were grown in hydroponic culture and then were fed by overwintering adults for 10 days. The results indicated that the uptake of nitrogen is affected with wheat phonological stages (p<0.001), interaction effects of adults sex and densities (p<0.001), interaction effects of wheat phenological stages and adults sex (p<0.05). More decreasing in N uptake observed in stem elongation with 2 males. Phosphor uptake was significantly affected by interaction effects of wheat phonological stages, adults sex and densitiesa (p<0.05). More decreasing in P uptake observed in stem elongation with 2 females. K uptake was not affected with no interaction effects. In attention to wide variations of N uptake, its appear that nitrogen to be better index to evaluate the indirect effects of E.integriceps feeding on wheat nutrient uptake, at least in short period.

کلیدواژه‌ها [English]

  • Nutriente
  • Sunn pest
  • Wheat
  • Eurygaster integriceps
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