اثر تیمار کوتاه مدت با نانو ذرات نقره و محلول گلجایی ساکارز روی پیری گل و برگ شاخه بریده رز
Subject Areas : Journal of Ornamental Plantsخدیجه آل کثیر 1 , رحیم نقش بند حسنی 2 , علیرضا مطلبی آذر 3
1 - دانش آموخته کارشناسی ارشد علوم باغبانی، دانشکده کشاورزی دانشگاه تبریز، تبریز، ایران
2 - استادیار گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه تبریز ، تبریز، ایران.
3 - دانشیار گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه تبریز ، تبریز، ایران
Keywords: عمر گلجایی, نانو ذرات نقره, ترکیبات ضد میکروبی, تیمار کوتاه مدت, انسداد آوندی,
Abstract :
این آزمایش برای ارزیابی اثر تیمار کوتاه مدت نانو ذرات نقره در غلظت های صفر، 4، 25، 75 و 125 میلی گرم در لیتر روی گل شاخه بریدنی رز رقم ʼهای اند مجیکʻ بدنبال نگهداری در محلول ساکارز با غلظت های صفر، 2 و 3 درصد از نظر عمر گلجایی و برخی از صفات فیزیولوژیکی پس از برداشت آن انجام شد. این تحقیق به شکل آزمایش فاکتوریل در قالب طرح کاملا تصادفی با سه تکرار برای هر تیمار اجرا شد. آزمایش تحت شرایط دمای 2 ± 23 درجه سانتیگراد، رطوبت نسبی 5±60 درصد و با شدت نوری محیط 12 میکرو مول در مترمربع درثانیه به مدت 12 ساعت توسط لامپ های فلورسنت انجام شد. نتایج نشان داد که تیمار 125 میلی گرم در لیتر نانو ذرات نقره همرا با ساکارز دو درصد و بدون ساکارز بیشترین تاثیر را در کنترل باکتری های انتهای ساقه را داشت. تیمار کوتاه مدت نانو ذرات نقره در کلیه غلظت ها سبب بهبود جذب محلول، حفظ رطوبت نسبی شاخه، بهبود باز شدن گل و شاخص فلورسانس کلروفیل برگ (Fv/Fm) در مقایسه با تیمار شاهد گردید. بیشترین میزان باز شدگی گل با درشتترین اندازه گل در تیمار 75 میلی گرم در لیتر نانوذرات همراه با ساکارز 2 درصد در روز نهم عمر گلجایی مشاهده گردید. کمترین میزان عمر گلجایی در تیمارهای آب مقطر به تنهایی و همراه با ساکارز بود. بیشترین میزان عمر گلجایی در تیمارهای 75 و 125 میلی گرم در لیتر نانو ذرات نقره بدون ساکارز و با ساکارز در مقایسه با سایر تیمارها مشاهده گردید.
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