اثر پتاسیم و روی بر عملکرد، اجزای عملکرد و برخی صفات فیزیولوژیک نخود در شرایط دیم

الموضوعات : بوم شناسی گیاهان زراعی

امین عباسی مقدم ¹ (دانشجوی کارشناسی ارشد زراعت دانشگاه آزاد اسلامی واحد علوم و تحقیقات اردبیل اردبیل، ایران)
علی عبادی ² (دانشیار گروه زراعت دانشکده کشاورزی دانشگاه محقق اردبیلی اردبیل، ایران)
حسین شهبازی ³ (دانشجوی کارشناسی ارشد زراعت دانشگاه آزاد اسلامی واحد علوم و تحقیقات اردبیل اردبیل، ایران)

تاريخ الإرسال : 03 الجمعة , رجب, 1435 تاريخ التأكيد : 26 الخميس , صفر, 1436 تاريخ الإصدار : 01 الأربعاء , ربيع الثاني, 1436

الکلمات المفتاحية: پایداری غشای سلول, پتانسیل اسمزی, رنگدانه‌های فتوسنتزی, عناصر غذایی, کم آبی, محتوی رطوبت نسبی برگ,

ملخص المقالة :

به منظور تعیین اثر مقادیر مختلف پتاسیم و روی بر عملکرد و برخی صفات فیزیولوژیک نخود در شرایط دیم، آزمایشی در سال 1390 در مزرعه تحقیقاتی دانشگاه آزاد اسلامی واحد اردبیل، به صورت فاکتوریل بر پایه طرح بلوک های کامل تصادفی با سه تکرار انجام شد. فاکتورهای مورد بررسی شامل پتاسیم در چهار سطح 0، 30، 60 و 90 کیلوگرم در هکتار و روی در سه سطح 0، 3 و 6 در هزار بودند. صفات مورد بررسی شامل عملکرد دانه، عملکرد بیولوژیک، شاخص برداشت، تعداد دانه در بوته، تعداد غلاف در بوته، میزان کلروفیل a، b و کل، محتوی رطوبت نسبی برگ، پایداری غشای سلولی و پتانسیل اسمزی بودند. کاربرد پتاسیم و روی موجب افزایش عملکرد و اجزای عملکرد شد به طوری که بیشترین عملکرد دانه با کاربرد 60 کیلوگرم در هکتار پتاسیم و محلول پاشی 6 در هزار روی به دست آمد. همچنین حداکثر عملکرد بیولوژیک، شاخص برداشت، تعداد دانه در بوته، کلروفیل a، b و کلروفیل کل و رطوبت نسبی برگ، پایداری غشای سلولی و پایین ترین پتانسیل اسمزی به تیمار 90 کیلوگرم در هکتار پتاسیم و تیمار 6 در هزار روی اختصاص یافت. کاربرد روی و پتاسیم موجب بهبود شاخص های تحمل به تنش و کاهش آسیب های ناشی از تنش خشکی شده و عملکرد را افزایش داد.

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