نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران.

2 دانشیار، گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران.

3 دانشیار، گروه علمی علوم کشاورزی، دانشگاه پیام نور، تهران، ایران.

چکیده

به ‌منظور بررسی اثر تنش  کم‌آبی و مصرف  تعدیل‌کننده‌های تنش بر عملکرد و اجزای عملکرد دانه کینوا، آزمایشی به­صورت فاکتوریل بر پایه طرح کاملاً تصادفی با  شش تکرار به­صورت گلدانی در سال زراعی 1397 در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه ارومیه اجرا شد. فاکتور اول شامل تنش  کم‌آبی در چهار سطح، تنش در مرحله رشد رویشی، تنش در مرحله رشد زایشی، تنش در مرحله پرشدن دانه و بدون تنش (شاهد) بود. فاکتور دوم تیمارهای محلول­پاشی در چهار سطح،  محلول‌پاشی اسید آسکوربیک، اسید سالسیلیک، کود کلاته میکرو کامل نانو و شاهد ( آب‌پاشی) بودند. تنش  کم‌آبی در مراحل مختلف رشدی سبب کاهش ارتفاع بوته، تعداد ساقه جانبی، وزن خشک و وزن تر اندام رویشی، حجم ریشه، وزن تر و خشک ریشه و طول ریشه نسبت به شاهد شد. اما میزان نشت الکترولیت و دمای برگ افزایش یافت. نتایج نشان داد که تنش  کم‌آبی در مرحله پس از گرده­افشانی، موجب کاهش عملکرد دانه از طریق کاهش وزن  هزاردانه شد که با محلول­پاشی  تعدیل‌کننده­های رشد از طریق بهبود اجزای عملکرد، باعث افزایش عملکرد دانه کینوا در شرایط تنش  کم‌آبی شد.  به‌نظر می­رسد استفاده از تعدیل‌کننده­های تنش در گیاه کینوا در شرایط تنش کم­آبی با تحریک رشد و سوخت وساز، موجب افزایش تحمل به تنش کم­آبی می­شود.

کلیدواژه‌ها

عنوان مقاله [English]

The Effect of Ascorbic Acid, Salicylic Acid, and Nano-Micronutrient Chelate Fertilizer on ‎Yield and Yield Components of Quinoa under Water-Deficit Stress

نویسندگان [English]

  • Seyedeh nasrin Hosseini 1
  • Jalal Jalilian 2
  • esmaeil gholinezhad 3

1 M.Sc. Student, Department of Plant Production and Genetic Engineering, Faculty of Agriculture, Urmia University, Urmia, Iran.

2 Associate Professor, Department of Plant Production and Genetic Engineering, Faculty of Agriculture, Urmia University, Urmia, Iran.

3 Associate Professor, Department of Agricultural Sciences, Payame Noor University, Tehran, Iran.

چکیده [English]

In order to investigate the effect of water deficit stress and stress modifiers on some morphological and physiological characteristics and yield of Quinoa, a pots factorial experiment, based on a completely randomized design, with 16 treatments and 6 iterations has been done during 2019 at Urmia University. The first factor includes water deficit stress at four levels, stress at the vegetative growth stage, stress at the reproductive growth stage, stress at seed filling stage, and no stress (control). The second factor is foliar spraying of ascorbic acid, salicylic acid, nano-micronutrient chelate fertilizer, and control (water spray). Water deficit stress at different growth stages decreases plant height, a number of laterals, dry weight, fresh weight of vegetative organs, root volume, fresh, and dry weight of root and root length, compared to the control. However, electrolyte leakage and leaf temperature are increased. Results show that water deficit stress at post-anthesis stage decrease grain yield via decreasing 1000-grain weight. Foliar application of growth regulators by improving yield components, increase the yield of quinoa under water deficit stress condition. Therefore, according to the results, it seems that the use of stress modulators in quinoa under water deficit stress with stimulating growth and metabolism, lead to water deficit stress tolerance.

کلیدواژه‌ها [English]

  • Drought stress
  • Ion leakage
  • Nano fertilizer
  • Relative water content
  • Root
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