تغییرات کیفیت بذرهای سویا در واکنش به سالیسیلیک اسید و جاسمونیک اسید تحت تنش شوری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 محقق پسادکتری گروه اکوفیزیولوژی گیاهی دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران

2 استاد گروه اکوفیزیولوژی گیاهی دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران

10.22124/jms.2021.5287

چکیده

این آزمایش برای بررسی اثر سطوح مختلف شوری (غیر شور، ۴، ۷ و ۱۰ دسی­زیمنس بر متر) و محلول­پاشی هورمونی (آب­پاشی، یک میلی­مولار سالیسیلیک اسید، نیم میلی­مولار جاسمونیک اسید و یک میلی­مولار سالیسیلیک اسید + نیم میلی­مولار جاسمونیک اسید) بر تغییر کیفیت بذرهای سویا (Glycine max cv. M7) انجام پذیرفت. شوری موجب افزایش محتوای سدیم در بذرها شد، اما محتوای پتاسیم و کلسیم، وزن تک بذر، سرعت جوانه­زنی بذر و وزن گیاهچه را کاهش داد. با این حال، تیمار نمک روی گیاهان، درصد جوانه­زنی بذرهای حاصل را تحت تأثیر قرار نداد. محلول­پاشی سالیسیلیک اسید سبب کاهش محتوای سدیم بذر و افزایش محتوای کلسیم و پتاسیم بذر، وزن تک بذر، سرعت جوانه­زنی و وزن خشک گیاهچه سویا شد. محلول­پاشی جاسمونیک اسید محتوای سدیم، پتاسیم و کلسیم بذر، وزن تک بذر، وزن خشک گیاهچه سویا را کاهش داد، ولی اثری بر سرعت و درصد جوانه­زنی بذرهای سویا نداشت. گیاهان تیمار­شده با سالیسیلیک اسید + جاسمونیک اسید بذرهای بزرگ­تر تولید نمودند، اما اثر این تیمار هورمونی بر سرعت جوانه­زنی و وزن گیاهچه مشابه با گیاهان تیمارشده با سالیسیلیک اسید بود. بر اساس نتایج حاصل، محلول­پاشی سالیسیلیک اسید به­صورت تکی و یا به­همراه جاسمونیک اسید می­تواند با کاهش محتوای سدیم و افزایش کلسیم و پتاسیم در بذرهای تولیدی سویا راهکار مناسبی برای بهبود کیفیت آن­ها در شرایط شوری باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Changes in seeds quality of soybean in response to salicylic acid and jasmonic acid under salt stress

نویسندگان [English]

  • Salar Farhangi-Abriz 1
  • Kazem Ghassemi-Golezani 2
1 Postdoctoral researcher of Department of Plant Eco-physiology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
2 Professor of Department of Plant Eco-physiology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
چکیده [English]

This experiment was conducted to evaluate the impact of different levels of salt stress (non-saline, 4, 7 and 10 dSm-1) and foliar application of hormones (foliar spray of water, 1 mM salicylic acid, 0.5 mM jasmonic acid and 1 mM salicylic acid + 0.5 mM jasmonic acid) on changes in soybean (Glycine max cv. M7) seed quality. Salinity increased the sodium content of soybean seeds, but reduced the calcium and potassium contents, seed weight, germination rate and seedling weight. However, salt treatment on plants did not change the germination percentage of seeds. Foliar application of salicylic acid decreased sodium content of soybean seeds, and increased calcium and potassium contents of seeds, seed weight, germination rate and seedling weight of soybean. Foliar application of jasmonic acid reduced sodium, potassium and calcium contents of seeds, seed weight and seedling weight, but did not affect germination percentage and rate. Plants treated with 1 mM salicylic acid + 0.5 mM jasmonic acid produced the largest seeds, however its effect on seed germination rate and seedling weight was similar to salicylic acid treatment. Based on the results, foliar application of salicylic acid individually or in combination with jasmonic acid could be a practical way improve seed quality of soybean by decreasing sodium content and increasing potassium and calcium content of seeds under salt stress.

کلیدواژه‌ها [English]

  • Germination
  • Jasmonic acid
  • Salicylic acid
  • Salinity
  • Seedling growth
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