تأثیر نانولوله‌های کربنی بر رشد ارتفاعی، جذب عناصر غذایی برگ و خاک در نهال‌های بلوط ایرانی در محیط گلخانه

نوع مقاله : علمی - پژوهشی

نویسندگان

1 استادیار، دانشکده منابع طبیعی و محیط‌زیست، دانشگاه ملایر، ملایر، ایران

2 استادیار، گروه مهندسی طبیعت، دانشکده منابع طبیعی و محیط زیست، دانشگاه ملایر

3 دانشجوی کارشناسی ارشد جنگلداری، گروه مهندسی طبیهت، دانشکده منابع طبیعی و محیط زیست، دانشگاه ملایر

چکیده

با وجود به­کارگیری وسیع و روبه رشد فناوری نانو به­ویژه در علوم گیاهی هنوز بسیاری از اثرها و کارکردهای نانوذرات بر عملکرد­های گیاهان ناشناخته است. این پژوهش حاضر برای بررسی اثر نانولوله­های کربنی، کلرید کلسیم یک­درصد و نیترات پتاسیم یک­درصد بر عناصر غذایی برگ و رشد ارتفاعی نهال بلوط ایرانی انجام شد. این آزمایش در قالب طرح کاملا تصادفی در سه تکرار در گلخانه تحقیقاتی دانشگاه ملایر انجام شد. به­ این­منظور بذور در تیمار اول شامل پنج سطح غلظت نانولوله­های کربنی (10، 25، 50، 75، 100 میلی­گرم در لیتر) به­مدت شش ساعت، تیمار دوم کلرید کلسیم یک­درصد به­مدت 48 ساعت و تیمار سوم نیترات پتاسیم به­مدت 24 ساعت و تیمار شاهد بدون استفاده از هیچ­گونه موادی پرایم شدند. در انتهای یک دورۀ شش ماهه مقدار رشد ارتفاعی و مقادیر عناصر غذایی سدیم، پتاسیم، کلسیم، فسفر و کربن برگ و خاک تحت نهال­ها اندازه­گیری شدند. براساس نتایج، بیشترین غلظت عناصر غذایی خاک در غلظت­های پایین نانوذرات مشاهده شد. همچنین در مقایسه با دیگر تیمارها، نیترات پتاسیم یک درصد بیشترین اثر را در افزایش کربن خاک داشت. مقادیر عناصر غذایی برگ­ها با افزایش غلظت نانولوله­های کربنی روند کاهشی داشتند. همچنین، استفاده از نانولوله­های کربنی با غلظت 50 میلی­گرم در لیتر شرایط خوبی در افزایش غلظت عناصر غذایی برگ­ها داشته است و به­کارگیری غلظت­های 50 و 75 میلی­گرم در لیتر نانولوله­های کربنی موجب افزایش رشد ارتفاعی نهال­های بلوط شد.

کلیدواژه‌ها


عنوان مقاله [English]

The effect of carbon nanotubes on height growth, leaf and soil nutrient uptake in Iranian oak seedlings in greenhouse environment

نویسندگان [English]

  • Farhad Ghasemi Aghbash 1
  • Iman Pazhouhan 2
  • Zahra Rostami 3
1 Assistant Professor, Department of Nature Engineering, Faculty of Natural Resource and Environment, ‎Malayer University, Malayer, I. R. Iran‎
2 Assistant Prof., Department of Nature Engineering, Faculty of Natural Resources and Environment, Malayer University
3 Department of Nature Engineering, Faculty of Natural Resources and Environment, Malayer University
چکیده [English]

Despite the widespread and growing use of nanotechnology, especially in plant science, many of the effects and functions of nanoparticles on plant mechanisms are still unknown. The present study was conducted to investigate the effect of carbon nanotube treatments, calcium chloride 1% and potassium nitrate 1% on leaf nutrients and height growth of Iranian oak seedlings. This experiment was performed in a completely randomized with three replications in the research greenhouse of Malayer University. For this purpose, the seeds were primed in the first treatment included five levels of concentration of carbon nanotubes (10, 25, 50, 75, 100 mg/l) for six hours, the second treatment of calcium chloride 1% for 48 hours and the third treatment Potassium nitrate for 24 hours and control treatment (non-priming). At the end of a six-month period, the growth rate and nutrient levels of sodium, potassium, calcium and phosphorus, and carbon in the leaves and soil under the seedlings were measured. According to the results, the highest concentration of soil nutrients was observed in low concentrations of nanoparticles. Findings showed that in compared to the other treatments, the greatest effect of potassium nitrate 1% was in increasing soil carbon. Also, the Findings showed that the amount of nutrients in the leaves decreased with increasing concentration of carbon nanotubes. According to the results, the use of carbon nanotubes with a concentration of 50 mg/l has good conditions in increasing the concentration of nutrients in the leaves. Also, the use of concentrations of 50 and 75 mg/l of carbon nanotubes increases the height growth of oak seedlings‎.

کلیدواژه‌ها [English]

  • Seedling growth
  • Persian oak
  • nutrients
  • Nanoparticles
  • Potassium Nitrate
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