تأثیر آب مغناطیسی و تنش شوری بر خصوصیات جوانه‌زنی و رشد گیاهچه لوبیا (Phaseolus vulgaris L.)

نوع مقاله : مقالات پژوهشی

نویسندگان

1 فردوسی

2 دانشگاه فردوسی مشهد

چکیده

ساختار مولکولی آب تحت تأثیر میدان‌ مغناطیسی قرار می‌‌گیرد، به‌طوری‌که باعث تغییراتی در روابط آب و رشد گیاه می‌شود. به‌منظور بررسی اثرات‌متقابل آب مغناطیس و شوری بر صفات جوانه‌زنی گیاهچه لوبیا رقم درخشان، آزمایشی در آزمایشگاه دانشکده کشاورزی دانشگاه فردوسی مشهد، به‌صورت فاکتوریل و در قالب طرح کاملاً تصادفی در سال 1393 اجرا شد. فاکتورهای آزمایشی شامل نوع آب (مغناطیس و غیر‌مغناطیس) و پنج‌سطح شوری (غلظت های صفر (شاهد)، 4، 5/6، 5/8، و 5/9 دسی‌زیمنس بر متر) بودند. نتایج نشان‌داد که با افزایش تیمار شوری صفاتی مانند درصد و متوسط زمان جوانه‌زنی، طول و وزن‌خشک ریشه‌چه و ساقه‌چه و همچنین زیست‌توده و شاخص بنیه بذر کاهش یافت. اما کاربرد آب مغناطیس، باعث بهبود کلیه صفات شد. کاربرد آب مغناطیس زیست‌توده و شاخص بنیه بذر را 52 و 24‌درصد در شرایط تنش شوری بهبود داد. اگرچه اثر ساده شوری باعث کاهش مقادیر کلروفیلa و b گردید، اما کاربرد آب مغناطیس میزان کلروفیل a را در شرایط شوری بهبود بخشید. به‌طورکلی نتایج نشان‌داد که قرار‌گرفتن آب آبیاری با تیمارهای شوری در‌معرض میدان‌مغناطیسی می‌تواند اثرات شوری ناشی از کلرور‌سدیم را بر شاخص‌های جوانه‌زنی کاهش دهد.

کلیدواژه‌ها


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