تأثیر پیش تیمار بذور بر خصوصیات رویشی و زایشی ارقام گندم

نویسندگان

1 استادیار، بخش غلات، مرکز تحقیقات کشاورزی و منابع طبیعی استان آذربایجان غربی، آذربایجان غربی

2 مربی، گروه زراعت دانشگاه آزاد اسلامی واحد پیرانشهر- آذربایجان غربی

چکیده

کشت دیرهنگام و کمبود نزولات آسمانی از مشکلات زراعت گندم در استان آذربایجان غربی به شمار میرود. بدین منظور آزمایشی جهت ارزیابی اثرات پیش تیمار بذر تحت شرایط آزمایشگاهی، گلخانه ای و مزرعه ای طی سال های 6-1385 اجرا شد. آزمایش به صورت فاکتوریل که در آن ارقام زرین، شهریار، سرداری و آذر به عنوان فاکتور اول و پیش تیمارهای بذور شامل آب مقطر، پلی اتیلن گلیکول 10 درصد، کلرید پتاسیم 5/2 درصد، اوره 10 درصد، ریزمغذی چهار درصد، سایکوسل و اکسین به غلظت های 1000 و 20 قسمت در میلیون و عدم پیش تیمار به عنوان فاکتور دوم تیمارهای آزمایشی را تشکیل دادند. بیشترین مقدار آب جذب شده مربوط به رقم شهریار با پیش تیمار آب مقطر بود. پیش تیمار تنظیم کننده های رشد اکسین و سایکوسل افزایش وزن بذر بیشتری داشتند. تجزیه واریانس صفات نشان داد که طول ساقچه و ریشچه و وزن خشک آنها، محتوی کلروفیل، میزان نیتروژن، عملکرد دانه و اجزای آن، ماده خشک کل و ارتفاع بوته اختلاف آماری معنی داری حداقل در سطح احتمال پنج درصد داشتند. کلیه پیش تیمارها در چهار رقم نسبت به شاهد از میزان جذب نیتروژن، عملکرد دانه و اجزای عملکرد بیشتری برخوردار بودند. پیش تیمار سایکوسل از بالاترین طول و وزن خشک ریشچه و ساقچه، عملکرد دانه و کمترین ارتفاع بوته برخوردار بود. در مقابل، پیش تیمار اوره برای صفات مرتبط با جوانه زنی تأثیر منفی داشت.

کلیدواژه‌ها


عنوان مقاله [English]

The effect of seed priming on germination and grain yield characteristics of wheat cultivars

نویسندگان [English]

  • Ali Reza Eyvazi 1
  • Rasoul Tajaddin Kokiae 2
چکیده [English]

Delay in planting and low precipitation in wheat (Triticum aestivum L.) farming is the problem in Western Azerbaijan province - Iran. In order to evaluate the effects of seed priming an experiment was conducted under laboratory, green house and field conditions in 2006-7. The experiment was arranged as a factorial in which first factor included of four cultivars (Zarrin, Shahriar, Sardary and Azar) and second factor was including the distilled water, 10% polyethylene glycol (8000), 2.5% KCl, 10% Urea, 4% Micro nutrient, 1000ppm Cycocel (CCC), 20ppm Auxin (IAA) and non priming treatment as control. The maximum water absorbed was for Shahriar with distilled water. IAA and CCC treatments increased seed weight. Analysis of variance showed that the lengths and dry weights of plumule and radical, chlorophyll content, absorbed nitrogen, grain yield and its components, total dry matter and plant height were significantly different (P? 0.05). All of priming treatments had more absorbed nitrogen, grain yield and its components than control. CCC treatment had the highest value of lengths and dry weights for plumule and radical, grain yield, but the lowest value of plant height. In contrast urea had the negative effects for seedling related traits.

کلیدواژه‌ها [English]

  • chlorophyll content
  • Grain yield and its components
  • Plumule and radical lengths
  • Priming
  • wheat cultivar

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