اثر پرایمینگ بذر بر عملکرد دانه و روغن گلرنگ تحت شرایط کم آبیاری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 مرکز تحقیقات کشاورزی و منابع طبیعی سیستان

2 دانشگاه پیام نور زاهدان

چکیده

به­منظور اثر پرایمینگ بذر بر عملکرد دانه و روغن گلرنگ تحت کم­آبیاری آزمایشی به­صورت کرت­های یک بار خرد شده بر پایه طرح بلوک­های کامل تصادفی در سه تکرار در مزرعه دانشگاه پیام نور زابل در سال زراعی 92-1391 اجرا شد. آبیاری در سه سطح شامل آبیاری در تمام مراحل رشد (روزت، ساقه رفتن، طبق­دهی، گلدهی و پرشدن دانه)، قطع آبیاری در روزت، ساقه رفتن، طبق­دهی و آبیاری در گلدهی و پرشدن دانه، آبیاری در مراحل روزت، ساقه رفتن، طبق­دهی و قطع آبیاری در مراحل گلدهی و پرشدن دانه؛ به­عنوان کرت  اصلی و پرایمینگ بذر در پنج سطح شامل بدون پرایم، پرایم با آب مقطر، پرایم با سولفات روی یک درصد، پرایم با نیترات پتاسیم یک درصد و پرایم با نیترات پتاسیم دو درصد؛ به­عنوان کرت فرعی بودند. نتایج نشان داد با کاهش رطوبت قابل استفاده در خاک در تیمارهای ساقه رفتن و گلدهی تعداد طبق در بوته، دانه در طبق، وزن هزاردانه، عملکرد دانه و روغن کاهش یافت. میزان کاهش عملکرد دانه در این تیمارها به­ترتیب حدود 20 و 45 درصد بود. عملکرد دانه و درصد روغن در حالت اسموپرایمینگ بذر با سولفات روی یک درصد و نیترات پتاسیم دو درصد نسبت به عدم پرایم به­ترتیب 19 و 14 درصد بیشتر بودند. بر اساس نتایج در کشت بهاره گلرنگ، آبیاری در تمام مراحل رشد می بایست انجام و پرایمینگ بذر نیز نسبت به عدم پرایم دارای برتری می­باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of seed priming on grain and oil yield of Safflower under irrigation deficit conditions

نویسندگان [English]

  • HamidReza Fanaei 1
  • Hanieh Keikha 2
  • Eisa Piri 2
چکیده [English]

In order to effect of seed priming on oil, grain yield of Safflower under irrigation deficit conditions a split plot experiment based on randomized complete block design was conducted with three replications in 2012-2013 growing seasons in research farm of Payame-Noor University of Zabol. Irrigation in three levels  included; I1= Irrigation in all growth stages (rosset, stem elongation, heading, flowering, and grain filling), I2=Irrigation interruption in rosset, stem elongation, heading and irrigation in flowering, and grain filling), I3=Irrigation in growth stages rosset, stem elongation, heading and interruption irrigation in flowering, and grain filling were main plot and seed priming  in five levels included; P1=Non- Primed (control), P2=Hydropriming, P3=Primed with 1% ZnSO4 P4=Primed with 1% KNO3 P5=Primed with 2% KNO3 were sub plots. The results showed that  number head in plant, grain in head, 1000 grain weight ,oil and grain yield in I2 and I3 treatments decreased as soil available moisture was reduced. Rate decreased grain yield in treatments was 20 and 45 %, respectively. The oil percentage and grain yield was higher in seeds osmopriming with 1% ZnSO4 and 2% KNO3 compared to non prime 19 and 14 %, respectively. Based on results in spring plant of  safflower must be take irrigation in all of growth stages and seeds priming than to non prime seed to be superior.

کلیدواژه‌ها [English]

  • Drought
  • Safflower
  • Seed pre-treatment
  • Zinc
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