نوع مقاله : مقاله پژوهشی

نویسندگان

1 1دانشجوی دکتری اکوفیزیولوژی، دانشگاه آزاد اسلامی، واحد بروجرد

2 دانشگاه آزاد اسلامی گروه کشاورزی، واحد بروجرد، دانشگاه آزاد اسلامی، بروجرد، ایران

3 استادیار بخش تولید نهال و بذر مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی همدان، همدان، ایران

4 استادیار گروه کشاورزی، دانشگاه ازاد واحد بروجرد، دانشگاه آزاد اسلامی، بروجرد، ایران

چکیده

به منظور بررسی تاثیر کاربرد روی و پتاسیم بر برخی صفات مورفولوژیکی و عملکرد گندم (Triticum aestivum L.) تحت تنش خشکی، آزمایشی به صورت اسپلیت-فاکتوریل در قالب طرح بلوک‌های کامل تصادفی (RCBD) با سه تکرار طی دو سال 97 و 98 در مرکز تحقیقات، آموزش و ترویج کشاورزی و منابع طبیعی همدان اجرا گردید. عامل کرت اصلی شامل سطوح آبیاری (نرمال و تنش رطوبتی) و عامل کرت فرعی شامل دو فاکتور محلول‌پاشی کودهای پتاس و روی بود. کود پتاس از منبع K2O (40 درصد) با احتساب 2 لیتر در هکتار در سه سطح 1) عدم مصرف، 2) محلول‌پاشی در ابتدای مرحله آبستنی، 3) محلول پاشی برگی بعد از گرده افشانی و کود روی محلول در آب (10 درصد) با احتساب 4 لیتر در هکتار در سه سطح 1) عدم مصرف، 2) محلول پاشی در ابتدای مرحله آبستنی، 3) محلول‌پاشی بعد از گرده‌افشانی استفاده گردید. نتایج تجزیه واریانس بیانگر وجود تفاوت معنی‌دار بین تیمارها در تمام صفات مورد بررسی بود. تفاوت معنی‌داری (p < 0.01) در تمامی صفات مورد ارزیابی تحت شرایط تنش و بدون تنش مشاهده گردید. مصرف توأم کود پتاسیم و روی در ابتدای مرحله آبستنی در مقایسه با شاهد، عملکرد دانه (5/4 درصد) و محتوای نسبی آب برگ (8/5 درصد) را در شرایط تنش افزایش داد.

کلیدواژه‌ها

عنوان مقاله [English]

The effect of Zn and K application on some physiological traits and yield of wheat (Triticum aestivum L.) under drought stress

نویسندگان [English]

  • Hamzeh Khanjani afshar 1
  • Mojtaba Jafarzadeh Kenarsari 2
  • Mehrdad Chaichi 3
  • amin farnia 4

1 Ph.D. student of Ecophysiology, Islamic Azad University, Boroujerd Branch

2 Department of Seed and Plant Improvement Research, Hamedan Agricultural and Natural Resources

3 Assistant Professor of Seed production of Hamedan, Agricultural Research, Education and Extension organization, Hamedan, Iran

4 Assistant Professor of Agriculture, Boroujerd Branch, Islamic Azad University, Boroujerd, Iran

چکیده [English]

To investigate the effect of zinc and potassium application on some morphological traits and yield of wheat (Triticum aestivum L.) under drought stress, a split-factorial layout based on a randomized complete block design (RCBD) with three replicates were carried out at the experimental farm of the Research, Education and Extension Center of Agriculture and Natural Resources of Hamadan during 2017-2018. The main plot included irrigation levels (normal and water stress) and the subplot included two factors of foliar application of potassium (K) and zinc (Zn) fertilizers. Potassium fertilizer from K2O source (40%) including 2 L/ha at three levels; I) without fertilizer (control sample), II) leaf spray at the beginning of booting, III) leaf spray after pollination, and zinc fertilizer from water-soluble zinc source (10%) including four liters per ha in three levels; I) without fertilizer (control sample), II) leaf spray at the beginning of booting, III) leaf spray was used after pollination. The results of the analysis of variance showed a significant difference between treatments in all studied traits. Significant differences in all of the traits were observed under stress and normal irrigation. Co-application of potassium and zinc fertilizers compared to the control increased grain yield (4.5%) and RWC (5.8%) evaluated morphological indices under stress conditions.To investigat

کلیدواژه‌ها [English]

  • Booting
  • Drought stress
  • Potassium
  • Wheat
  • Zinc
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