تاثیر سایتوکینین و تنش شوری بر ویژگی‌های گلدهی و بیوشیمیایی یاسمن زمستانه
Subject Areas : Journal of Ornamental Plants
معصومه فاضلی
1
,
داوود نادری
2
1 - گروه علوم باغبانی، واحد خوارسگان، دانشگاه آزاد اسلامی، اصفهان، ایران
2 - باشگاه پژوهشگران و نخبگان جوان، واحد خوراسگان، دانشگاه آزاد اسلامی، اصفهان، ایران
Keywords: محتوای کلروفیل, سوپراکسید دیسموتاز, هورمون‌های گیاهی, تحمل تنش, نزیل آدنین,
Abstract :
هدف از این مطالعه بررسی اثرات سطوح مختلف تنش شوری و محلولپاشی 6-بنزیل آمینوپورین (بنزیل آدنین) بر ویژگی‌های مورفولوژیک و بیوشیمیایی یاسمن زمستانه بود. بنابراین آزمایشی در سال‌های 96-1395 در مرکز تحقیقات گلخانه‌ای دانشگاه آزاد اسلامی واحد اصفهان (خوراسگان) انجام شد. این آزمایش بصورت فاکتوریل بر اساس طرح کاملا تصادفی با چهار سطح تنش شوری (2، 4، 6 و 8 دسی‌زیمنس بر متر) به‌عنوان عامل اول و سطوح مختلف بنزیل‌آدنین (کنترل (عدم کاربرد)، 25 و 50 میلی‌گرم در لیتر) به عنوان عامل دوم در 3 تکرار (مجموع 36 واحد آزمایش) انجام شد. صفاتی مانند وزن تر و خشک وزن گل، تعداد گل، درصد کلروفیل a، b، کل، کاروتنوئید و آنزیم سوپراکسید دیسموتاز گیاه یاسمن زمستانه مورد مطالعه قرار گرفت. نتایج نشان داد که سطوح شوری و بنزیل‌آدنین تاثیر معنی‌داری بر تمام صفات داشت. نتایج نشان داد که فعالیت آنزیم سوپر اکسید دیسموتاز در شوری هشت دسی‌زیمنس بر متر به‌طور معنی‌داری از فعالیت این آنزیم در تیمار دو دسی‌زیمنس بر متر بیشتر بود و بالاترین فعالیت آن در تیمار هشت دسی‌زیمنس بر متر مشاهده شد. از سوی دیگر، در بررسی اثرات استفاده از بنزیل‌آدنین، مشاهده شد که این تیمار اثرات مثبتی بر تمام صفات مورد بررسی دارد و اثرات آنها وابسته به غلظت است. در پایان می‌توان گفت، با وجودی که تنش شوری اثر منفی بر یاسمن زمستانه داشت، تیمار بنزیل‌آدنین اثرات منفی تنش شوری را کاهش داده است.
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