ارزیابی اثر خیسانیدن بذر با نانو کودها بر خصوصیات جوانه‌زنی و رشد گیاهچه ارقام گندم در شرایط تنش شوری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه آزاد اسلامی واحد مشهد

2 استادیار

چکیده

جوانه­زنی و رشد گیاهچه برای استقرار گیاهان تحت تنش شوری اهمیت دارد از این رو شناخت ارقامی از گیاهان که جوانه­زنی سریع و یکنواختی در شرایط شور دارند می­تواند به استقرار اولیه و رشد گیاهچه کمک نماید. به­منظور ارزیابی اثر خیسانیدن بذر با نانو کودها بر خصوصیات جوانه­زنی و رشد گیاهچه ارقام گندم در شرایط تنش شوری آزمایشی به­صورت طرح فاکتوریل سه عاملی در قالب طرح پایه کاملا تصادفی در سه تکرار با چهار رقم گندم (چمران2، سیوند، پیشتاز و پارسی) در چهار سطح تنش شوری با نمک کلرید سدیم (Nacl) مرک آلمان در غلظت­های مختلف (4، 6، 8 و 10 دسی زیمنس بر متر) و سه نوع کود نانو (فسفر، پتاس و نانو کود ریزمغذی­ها) در شرایط کنترل شده انجام گرفت، نتایج نشان داد واکنش چهار رقم گندم نسبت به اعمال سطوح مختلف تنش شوری و انواع نانو کودها برای صفات مورد مطالعه (سرعت و درصد جوانه­زنی، طول گیاهچه، وزن تر و خشک گیاهچه و شاخص بنیه بذر) معنی­دار بود به­نحوی­که اثرات متقابل تیمارهای آزمایشی حاکی از برتری رقم پارسی و نانو کود فسفر در تنش شوری4 دسی زیمنس بر متر بود این در حالی است که برهمکنش رقم چمران2، نانو کود پتاس در تنش شوری 10 دسی زیمنس بر متر نیز کمترین مقدار را در بین تیمارها داشت. به­نظر می­رسد در غلظت­های بالاتر نمک و با افزایش تنش شوری، حتی پرایمینگ انواع مختلف نانوکود نتوانسته صفات مورد بررسی را بهبود بخشد، اما در غلظت­های کمتر نمک، تیمارهای نانو کودی تا حدودی اثر منفی نمک را تعدیل نموده است.

کلیدواژه‌ها

عنوان مقاله [English]

Evaluation of seed soaking effect in nano-fertilizers on germination charactristics and seedling growth of wheat cultivars under salinity stress condition

نویسندگان [English]

  • Mitra Kamalibaniani 1
  • Alireza souhanidarban 2
  • Mohsen Nabavikalat 1
1 Mashhad Branch, Islamic Azad University
2 Assistant Professor in Plant Breeding, Department of Agronomy & Plant Breeding, Mashhad Branch, Islamic Azad University, Mashhad, Iran
چکیده [English]

Germination and seedling growth under salt stress is important for establishment of plant. Hence recognition varieties of plants that have rapid and uniform germination under saline conditions can help to the early establishment and seedling growth. In order to evaluate seed soaking effect in nano-fertilizers on germination charactristics and seedling growth of wheat cultivars under salt stress with nano-fertilizers was performed experiment in 3-factor factorial in a randomized complete design in three replications with four wheat cultivars (Sivand, Parsi, Pishtaz and Chamran2), salinity stress with Nacl (Merck, Germany) in different concentrations (4, 6, 8 and 10 ds/m) and three types of supplement nano-fertilizers (nano-phosphorus, nano-potassium and nano-microelements), under controlled conditions, The results showed that four wheat cultivars reaction compare to apply of salinity levels and types of nano fertilizers was significant for studied characteristics (rate and percentage of germination, seedling length, dry weight and vigor index). So that treatments interaction Parsi cultivar, nano-phosphorus fertilizer and salinity stress 4 ds/m was highest, while interaction in Chamran2, nano-potassium fertilizer in salinity of 10 ds/m among treatments was lowest. So it seems the higher concentration of salt and with increasing salinity levels, even priming different types of nano-fertilizers couldn't be able to improve studied characteristics, generally, at lower concentrations of salt, Nano-fertilizer treatments has moderated somewhat negative effect of salt, but in higher concentrations it has no effect, Except germination rate parameter that even in conditions of salinity up to 10 ds/m could also be effective and increase the germination rate.

کلیدواژه‌ها [English]

  • Nanofertilizer
  • Priming
  • Salinity Stress
  • Wheat

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علوم و تحقیقات بذر ایران
دوره 5، شماره 1
خرداد 1397
صفحه 1-10

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