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

پژوهش‌های حبوبات ایران

مقاله 4، دوره 7، شماره 1، مهر 1395، صفحه 81-92   

نوع مقاله: مقالات پژوهشی

شناسه دیجیتال (DOI): 10.22067/ijpr.v7i1.38695

نویسندگان

مرتضی گلدانی^{* 1}؛ مریم جوادی²؛ احمد نظامی²

¹فردوسی

²دانشگاه 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

تیمار فیزیکی؛ کلروفیلa؛ کلروفیل b؛ متوسط زمان جوانه‌زنی

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