بهبود عملکرد بذرهای توس (Betula pendula Roth) با استفاده از نانوپرایم و مغناطیس

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموختۀ کارشناسی ارشد دانشکدۀ علوم جنگل دانشگاه علوم کشاورزی و منابع طبیعی گرگان

2 دانشیار دانشکدۀ علوم جنگل دانشگاه علوم کشاورزی و منابع طبیعی گرگان

3 استادیار دانشکدۀ علوم جنگل دانشگاه علوم کشاورزی و منابع طبیعی گرگان

4 استادیار مرکز تحقیقات کشاورزی و منابع طبیعی استان مرکزی

5 دانشیار دانشکدۀ مهندسی چوب و کاغذ دانشگاه علوم کشاورزی و منابع طبیعی گرگان

6 استادیار پژوهش، بخش تحقیقات منابع طبیعی، مرکز تحقیقات کشاورزی و منابع طبیعی استان گلستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، گرگان، ایران

چکیده

تحقیق حاضر با هدف بررسی امکان افزایش شاخص‌های صفات جوانه‎زنی (درصد و سرعت سبز شدن) و رویشی گیاهچه‌های سه‌ماهۀ Betula pendula Roth  (طول ساقه و ریشه، قطر یقه، وزن ‌تر و خشک ریشه و ساقه و نیز سطح برگ) با اعمال نانوپرایمینگ و تیمار مغناطیس انجام گرفت. بذرها از سیاه‌مرزکوه در 18 کیلومتری گرگان جمع‎آوری و پس از ضدعفونی در محلول نانو‌کیتین، نانوکیتوزان و نانوسلولز 1 درصد پرایم خیسانده و سپس کاشته شدند. تیمار مغناطیس برای بذرها در سه سطح 20، 30 و 40 میلی‌تسلا و زمان 1، 10 و 20 دقیقه اعمال شد و بذرها بلافاصله کاشته شدند. تعدادی از بذرها نیز بعد از قرار گرفتن تحت تأثیر میدان مغناطیس (با دوز و زمان قبلی)‌، با هر سه نانوماده پرایم و سپس کشت شدند. نتایج نشان داد که از بین همۀ تیمارهای اعمال‌شده، مغناطیس یک‌دقیقه‌ای بذرها در شدت 30 میلی‌تسلا و سپس پرایم دوساعتۀ بذرها با نانوسلولز 1 درصد بهترین نتایج را در پی دارد، به‌نحوی که موجب افزایش درصد سبز شدن (58/1 برابر) سرعت سبز شدن (9/1 برابر) تعداد برگ (2/1 برابر) سطح برگ (84/1 برابر) و طول ریشه (4/1 برابر) نسبت به شاهد (فاقد تیمار) شد. تیمار مغناطیس 20 دقیقه‌ای بذرها در شدت 30 میلی‌تسلا و سپس پرایم دوساعتۀ بذرها با نانوسلولز 1 درصد نیز نتایج مشابهی داده است‌. دو تیمار 10 و 20 دقیقه‌ای بذرها در 30 میلی‌تسلا (بدون نانوپرایم) نیز بعد از این دو تیمار توصیه می‌شوند.

کلیدواژه‌ها


عنوان مقاله [English]

Improving the performance of birch seeds (Betula pendula) using nanoprime and magnetic field

نویسندگان [English]

  • R. Pordel 1
  • V. Payamnoor 2
  • J. mohammadi 3
  • Gh. Goodarzi 4
  • H. Yousefi 5
  • A. Ahmadi 6
1 M.Sc.Graduate student, Faculty of Forest Sciences, Gorgan University of Agricultural Sciences and Natural Resources, I. R. Iran
2 Associate Prof., Faculty of Forest Sciences, Gorgan University of Agricultural Sciences and Natural Resources, I. R. Iran
3 Assistant Prof., Faculty of Forest Sciences, Gorgan University of Agricultural Sciences and Natural Resources, I. R. Iran
4 Assistant Prof., of Agricultural and Natural Resources Research, Markazi Province, I. R. Iran
5 Associate Prof., Faculty of Wood and Paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources, I. R. Iran
6 Assistant Prof., Research Division of Natural Resources, Golestan Agriculture and Natural Resources Research and Education Center, AREEO, Gorgan, I. R. Iran
چکیده [English]

The aim of this study was to investigate the possibility of increasing the germination traits (germination and rate percentage) and vegetation characteristics of 3-month-old seedlings of Betula pendula (plumule and radicle length, collar diameter, fresh and dry weight of root, leaf area) by applying nano-priming and magnetic field. Seeds were collected from the Siah- Marzkouh area, 18 km from Gorgan-Golestan, Iran and after disinfection they were primed (soaked)  in a 1% solution of nano-chitin, nano-chitosan and nano-cellulose, and then sown. Magnetic treatment was applied to the seeds at three levels of 20, 30 and 40 mT at 1, 10 and 20 minutes and were sown immediately. A number of seeds were primed with all 3 nanomaterials after being exposed to the magnetic field (with the previous dose and time) and then planted. The results showed that among all the applied treatments, 1 min magnetism in 30 mT and then 2 hour seed priming with 1% solution of nanocellulose, were the best, In a way that increased the germination percentage (1.58 times), germination rate (1.9 times), number of leaves (1.2 times), leaf area (1.84 times) and root length (1.4 times) compared to the control (no treatment). The 20-minute magnetic treatment of seeds at 30 mT intensity and then the two-hour seed priming with 1% nanocellulose gave similar results. Two seed treatments (10 and 20 minute) in 30 mT (without nanopriming) are also recommended after these two treatments.

کلیدواژه‌ها [English]

  • Birch
  • Nano cellulose
  • Nano chitin
  • Nano chitosan
  • Magnetic treatment
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