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مهدی آران بهرام عابدی علی تهرانی فر مهدی پارسا

چکیده

به¬منظور بررسی تاثیر تنش خشکی بر برخی از ویژگی¬های سه رقم انگور (یاقوتی، بیدانه سفید و عسکری)، آزمایشی گلدانی به¬صورت فاکتوریل در قالب طرح بلوک¬های کامل تصادفی با چهار تکرار در سال¬های94-1393 انجام شد. تیمارهای آبیاری در چهار سطح، شامل تیمار شاهد (100 درصد ظرفیت زراعی)، تنش متوسط (60 درصد ظرفیت زراعی)، تنش شدید (30 درصد ظرفیت زراعی) و تیمار آبیاری مجدد پس از تیمار تنش شدید انجام شدند. نتایج نشان داد که با افزایش شدت تنش خشکی، شاخص‌های رشدی، شاخص کلروفیل و محتوای نسبی آب برگ¬ها کاهش می¬یابد و در شرایط تنش خشکی شدید رقم یاقوتی دارای بیشترین میزان افزایش ارتفاع (12/9 سانتیمتر)، تعداد برگ (12/35)، وزن خشک برگ و ساقه (به ترتیب 92/4 و 41/8 گرم) و محتوای نسبی آب برگ (49/85 درصد) بود. میزان نشت الکترولیت¬ها، میزان قندهای محلول کل، میزان فعالیت آنتی‌اکسیدانی، ترکیبات فنلی و پرولین با افزایش شدت تنش خشکی افزایش یافت. در شرایط تنش خشکی رقم بیدانه سفید دارای بیشترین میزان نشت الکترولیت‌ها بود و رقم یاقوتی بیشترین میزان فعالیت آنتی‌اکسیدانی (3/45 درصد) و پرولین (12/11 میکرو مول بر گرم وزن خشک) را در شرایط تنش خشکی شدید نسبت به دو رقم دیگر داشت. با توجه به نتایج بدست آمده در این پژوهش به نظر می‌رسد که رقم یاقوتی نسبت به دو رقم دیگر به خشکی متحمل¬تر است.

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ارجاع به مقاله
آرانم., عابدیب., تهرانی فرع., & پارسام. (۱۳۹۵-۱۲-۰۷). بررسی تاثیر تنش خشکی بر برخی ویژگی‌های مورفولوژیکی و فیزیولوژیکی سه رقم انگور (.Vitis vinifera L). نشریه علوم باغبانی, 31(2), 315-326. https://doi.org/10.22067/jhorts4.v0i0.53495
نوع مقاله
علمی - پژوهشی

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