ارزیابی، مدل‌سازی و بهینه‌سازی پاسخ‌های جوانه‌زنی بذر رازیانه به تیمار امواج فراصوت-میدان مغناطیسی و پیش‌تیمار پلاسمای سرد

مقالات آماده انتشار

نوع مقاله : مقاله پژوهشی

نویسندگان

فاطمه گوری بمی

مسلم نامجو

محمدرضا کمانداز

گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه جیرفت، جیرفت، ایران

10.22067/jam.2026.100498.1519

چکیده

هدف از این پژوهش، مدل‌سازی، ارزیابی و بهینه‌سازی شاخص‌های جوانه‌زنی بذر رازیانه با استفاده از تیمارهای فیزیکی ترکیبی شامل پیش‌تیمار پلاسمای سرد، امواج فراصوت و میدان مغناطیسی بود. به‌منظور دستیابی به این هدف، سامانه ترکیبی تولید میدان مغناطیسی- امواج فراصوت ساخته شد و آزمایش‌ها بر اساس طرح فاکتوریل با استفاده از روش سطح پاسخ (RSM) طراحی گردید. متغیرهای مستقل شامل زمان پیش‌تیمار پلاسمای سرد (۰، ۱ و ۲ دقیقه)، توان امواج فراصوت (۰، ۶۰ و ۱۲۰ وات) و شدت میدان مغناطیسی (۱۵۰، ۳۰۰ و ۴۵۰ میلی‌تسلا) بودند. شاخص‌های مورد ارزیابی شامل درصد جوانه‌زنی، سرعت جوانه‌زنی، میانگین زمان جوانه‌زنی، طول ساقه‌چه و ریشه‌چه و وزن تر ساقه‌چه و ریشه‌چه بودند. نتایج تجزیه واریانس نشان داد که پلاسمای سرد و امواج فراصوت اثرات بسیار معنی‌داری (p<0.01) بر اکثر شاخص‌ها داشتند، در حالی‌که میدان مغناطیسی در بیشتر موارد اثر معنی‌داری نداشت. برهم‌کنش پلاسما و فراصوت نیز در بسیاری از صفات معنی‌دار بود که حاکی از اثر هم‌افزایی این دو تیمار است. مدل‌های ریاضی چندجمله‌ای درجه دوم با ضریب تبیین بالا، توانایی خوبی در پیش‌بینی پاسخ‌ها نشان دادند. شرایط بهینه بر اساس شاخص مطلوبیت برابر با 0.86 شامل حدود 1.04 دقیقه پلاسمای سرد، 63.67 وات فراصوت و شدت میدان مغناطیسی حدود ۲۳۰ میلی‌تسلا به‌دست آمد که در این شرایط درصد جوانه‌زنی حدود 84.13%، سرعت جوانه‌زنی 5.71 بذر در روز و میانگین زمان جوانه‌زنی 5.60 روز پیش‌بینی شد.

کلیدواژه‌ها

پلاسمای سرد

رازیانه

فراصوت

مدل‌سازی سطح پاسخ

میدان مغناطیسی

موضوعات

• مهندسی پس‌ از برداشت، و فرآوری محصولات کشاورزی

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Authors retain the copyright. This is an open access article distributed under Creative Commons Attribution 4.0 International License (CC BY 4.0)

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