کارایی نانوذرات اکسید روی (ZnO NP) سنتز شده بر جذب روی و برخی شاخص‌های رشدی گندم

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد گروه خاکشناسی دانشکده کشاورزی دانشگاه شهید چمران اهواز

2 استادیار گروه خاکشناسی دانشکده کشاورزی دانشگاه شهید چمران اهواز

3 استادیار آزمایشگاه تحقیقاتی شیمی پلیمر دانشکده علوم دانشگاه شهید چمران اهواز

4 دانشیار گروه خاکشناسی دانشکده کشاورزی دانشگاه شهید چمران اهواز

چکیده

سابقه و هدف: کمبود عناصر مغذی کم مصرف نظیر روی یکی از مشکلات رایج در خاک‌های سراسر دنیا به ویژه خاک‌های آهکی است. از این رو، استفاده از روش‌های نوین از جمله نانوذرات اکسید روی جهت بهبود وضعیت تغذیه‌ای این عنصر در محصولات زراعی رو به افزایش است. مطالعات زیادی نشان دادند که استفاده از نانوذرات اکسید روی موجب بهبود عملکرد گیاه می‌شود. پژوهش حاضر با هدف بررسی اثرات نانوذرات اکسید روی بر عملکرد، غلظت و جذب روی در ریشه و اندام هوایی گندم تحت کشت گلخانه‌ای در یک خاک آهکی انجام شد.
مواد و روش‌ها: این پژوهش در شرایط گلخانه‌ای و در قالب طرح کاملاً تصادفی با سه تکرار انجام شد. فاکتورهای آزمایش شامل نانوذرات اکسید روی (ZnO NP) به مقدار 100، 200 و 300 میلی‌گرم بر کیلوگرم، کود شیمیایی سولفات روی (ZnSO4) به مقدار 40 کیلوگرم در هکتار و تیمار شاهد بودند. طی دوره آزمایش ویژگی‌هایی مانند ارتفاع گیاه و شاخص کلروفیل اندازه‌گیری شد. در پایان دوره کشت، وزن خشک و غلظت روی ریشه، اندام هوایی و دانه با استفاده از دستگاه جذب اتمی اندازه‌گیری شد. همچنین پ .هاش و مقدار روی قابل دسترس خاک نیز با استفاده از عصاره‌گیر DTPA اندازه‌گیری شد.
یافته‌ها: مقدار روی قابل دسترس خاک در هر یک از سطوح نانوذرات اکسید روی نسبت به تیمار شاهد افزایش معنی‌داری در سطح یک درصد نشان داد. بیشترین مقدار روی قابل دسترس خاک در سطح 300 میلی‌گرم در کیلوگرم نانوذرات اکسید روی با افزایش 73/52% نسبت به تیمار شاهد مشاهده شد. تأثیر تیمارهای نانوذرات اکسید روی و سولفات روی بر وزن خشک اندام هوایی، ارتفاع بوته و کلروفیل در سطح 1 درصد و بر وزن خشک ریشه در سطح 5 درصد معنی‌دار بود. ترتیب عملکرد اندام هوایی و ریشه، غلظت و جذب روی در تیمارها به صورت ZnSO4 < ZnO NP100 < ZnO NP200 < ZnO NP300 بود. بیشترین مقدار عملکرد ریشه، ساقه و دانه در سطح 300 میلی‌گرم در کیلوگرم نانوذرات اکسید روی به ترتیب با افزایش 02/43 % ، 91/24 % و 08/37 % نسبت به تیمار شاهد به‌دست آمد. بیشترین مقدار غلظت روی در ریشه و اندام هوایی به ترتیب با افزایش 11/62 % و 19/111 % در سطح 300 میلی‌گرم در کیلوگرم نانوذرات اکسید روی نسبت به تیمار شاهد مشاهده شد. بیشترین مقدار غلظت و جذب روی دانه نیز در سطح 300 میلی‌گرم در کیلوگرم مشاهده شد.
نتیجه‌گیری: نتایج نشان داد که استفاده از نانوذرات اکسید روی موجب افزایش عملکرد، غلظت و جذب عنصر روی ریشه و اندام هوایی گندم شد. بنابراین می‌توان کاربرد نانوذرات را به عنوان یکی از روش‌های نوین جهت بهبود عملکرد و کیفیت محصولات زراعی و کاهش استفاده از کودهای شیمیایی در نظر گرفت.

کلیدواژه‌ها


عنوان مقاله [English]

The effectiveness of synthesized ZnO nanoparticles on Zn uptake and some growth indices of wheat

نویسندگان [English]

  • Ali Abdollahi 1
  • Mojtaba Norouzi masir 2
  • Mehdi Taghavi zahedkolaei 3
  • Abdolamir Moezzi 4
1 M.Sc, Department of Soil Science, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Iran
2 Assistant Professor of Soil Science Department, Faculty of Agriculture, Shahid chamran university of Ahvaz, Iran
3 Assistant Professor of Polymer Chemistry Research Laboratory, Faculty of Science, Shahid Chamran University of Ahvaz, Iran
4 Associate Professor of Soil Science Department, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Iran
چکیده [English]

The effectiveness of synthesized ZnO nanoparticles on Zn uptake and some growth indices of wheat

Background and Objectives: Micronutrient deficiency like Zinc is one of the common problems in worldwide soils especially calcareous soils. Therefore, application of new methods including Zinc Oxide Nanoparticles is increasing to improve of nutritional status of this element in crops. Many studies showed that ZnO Nanoparticles application lead to increase of plant yield. Thus, present study was conducted to investigate of ZnO Nanoparticles effects on yield, concentration and uptake of Zn in root, shoot and grain of wheat under greenhouse cultivation in a calcareous soil.
Materials and Methods: This study was conducted in greenhouse condition as a randomized complete design with three replications. Treatment consisted of three levels of Zinc Nanoparticles (100, 200 and 300 mg.kg-1), ZnSO4 (40 kg.ha-1) and Control. During the experiment, some parameters such as plant height and chlorophyll index were measured. At the end of cultivation period, dry weight and Zn concentration of root, shoot and grain was determined using Atomic absorption. As well as,pH and soil available zinc was measured using DTPA extraction.
Results: The amount of soil available Zn in all levels of ZnO Nanoparticles was significantly (P<0.01) increased compared to control. The maximum amount of soil available Zn was observed in level of 300 mg.kg-1 ZnO Nanoparticles with 52.73% increment compared to control. The sequence of shoot and root yield, concentration and uptake of Zn in treatments was as follow: ZnSO4 < ZnO NP100 < ZnO NP200 < ZnO NP300. The maximum yield of root, shoot and grain was obtained in level of 300 mg.kg-1 of ZnO Nanoparticles with 43.02, 24.91 and 37.08% increment compared to control, respectively. The maximum concentration of Zn was observed in root and shoot in level of 300 mg.kg-1 of ZnO Nanoparticles with 62.11 and 111.19% increment compared to control, respectively. As well as, maximum concentration and uptake of Zn of grain was observed in level of 300 mg.kg-1 of ZnO Nanoparticles.
Conclusions: The results showed that application of ZnO Nanoparticles was increased yield, concentration and uptake of Zn in root and shoot of Wheat. Therefore, application of nanoparticles can be considered as one of the new methods for improving the yield and quality of crops and reducing the use of chemical fertilizers. The results showed that application of ZnO Nanoparticles was increased yield, concentration and uptake of Zn in root and shoot of Wheat. Therefore, application of nanoparticles can be considered as one of the new methods for improving the yield and quality of crops and reducing the use of chemical fertilizers.

کلیدواژه‌ها [English]

  • Chemical Fertilizer
  • Zn Uptake
  • Wheat
  • ZnO Nanoparticles
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