تأثیر سلنیوم و نانوذره آهن بر رشد و عملکرد شعمدانی عطری تحت تنش شوری کلریدسدیم

نوع مقاله : مقالات پژوهشی

نویسندگان

1 گروه زراعت و اصلاح نباتات، دانشگاه شهید مدنی آذربایجان، ایران

2 گروه زراعت و اصلاح نباتات دانشگاه شهید مدنی اذربایجان

3 گروه باغبانی، دانشگاه تبریز، تبریز، ایران

چکیده

به­منظور بررسی تأثیر محلول­پاشی با نانوذره آهن و سلنیوم بر روی گیاه شعمدانی عطری تحت تنش شوری، دو آزمایش جداگانه بصورت فاکتوریل بر مبنای طرح کاملاً تصادفی اجرا شد. در آزمایش اول تاثیر محلول­پاشی با نانوذره آهن (صفر، 5/1 و 3 میلی­گرم در لیتر) و در آزمایش دوم تاثیر محلول­پاشی با سلنیوم (صفر، 5/1 و 3 میلی­گرم در لیتر) بر رشد و برخی صفات فیزیولوژیک شعمدانی عطری تحت تنش شوری (صفر، 50 و 100 میلی‌مولار کلریدسدیم) مورد ارزیابی قرار گرفت. نتایج آزمایش اول نشان داد وزن­خشک بخش هوایی گیاه، فعالیت کاتالاز، محتوای آهن، سدیم، پراکسید هیدروژن و درصد اسانس شعمدانی تحت تاثیر اثرات مستقل تنش شوری و محلول­پاشی با نانوذره آهن قرار گرفت. نسبت پتاسیم به سدیم، محتوای فلاونوئید، پتاسیم، مالون دی­آلدئید، پرولین و فعالیت سوپراکسید دیسموتاز تحت تاثیر تنش شوری قرار گرفت. بالاترین عملکرد گیاه، محتوای آهن، نسبت پتاسیم به سدیم و فعالیت سوپراکسید دیسموتاز در تیمار بدون تنش شوری مشاهده شد. بالاترین محتوای سدیم، پرولین، مالون دی­آلدئید، پراکسید هیدروژن در تنش شوری 100 میلی­مولار کلرید سدیم مشاهده شد. تیمار بدون تنش شوری و 50 میلی­مولار کلریدسدیم موجب افزایش درصد اسانس شعمدانی شد. تیمارهای محلول­پاشی با هر دو سطح نانوذره آهن موجب افزایش محتوای کاتالاز، عملکرد، محتوای فنل و درصد اسانس شد. در آزمایش دوم عملکرد گیاه، محتوای پرولین و فلاونوئید تحت تاثیر تنش شوری قرار گرفت. محتوای کاتالاز، مالون دی­آلدئید، فعالیت سوپراکسید دیسموتاز و پراکسید هیدروژن تحت تأثیر اثرات مستقل تنش شوری و محلول­پاشی با سلنیوم قرار گرفت. تیمار بدون تنش شوری موجب افزایش عملکرد گیاه، فعالیت سوپراکسید دیسموتاز و پتاسیم گیاه شد. با افزایش تنش شوری به 100 میلی­مولار محتوای پرولین، مالون دی­آلدئید و پراکسید هیدروژن در گیاه افزایش یافت. بیشترین فعالیت کاتالاز در تیمارهای بدون تنش شوری و تنش شوری 50 میلی­مولار کلریدسدیم مشاهده شد. محتوای سلنیوم، سدیم و نسبت پتاسیم به سدیم تحت تاثیر اثرات متقابل تنش شوری و محلول­پاشی با سلنیوم قرار گرفت. محلول­پاشی با 5/1 و 3 میلی­گرم در لیتر سلنیوم موجب افزایش محتوای کاتالاز، سوپراکسید دیسموتاز، فنل کل و محتوای پتاسیم شعمدانی شد. نتایج حاصل از تجزیه GC/MS نشان داد که β-citronellol (5/24 -5/12 درصد) و  Citronelly acetate (39/18 – 56/1 درصد) جزء غالب اسانس شعمدانی عطری در تیمار تنش شوری 50 میلی­مولار کلریدسدیم با محلول­پاشی 5/1 میلی­گرم در لیتر سلنیوم و Citronelly formate (2/25 -75/10 درصد) جزء قالب اسانس در تیمار شاهد بود. در کل چنین می­توان نتیجه­گیری نمود که تنش شوری موجب کاهش صفات رشدی و فیزیولوژیک شعمدانی عطری شد. محلول­پاشی با سلنیوم و نانوذره آهن نقش مهمی در بهبود صفات فیزیولوژیک گیاه داشت.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Foliar Application of Nano Fe and Se Affected the Growth and Yield of Pelargonium graveolens under Salinity Stress

نویسندگان [English]

  • L. Vojodi Mehrabani 1
  • Y. Anvari Gheshlagh 2
  • A. Motallebi Azar 3
1 Department of Agronomy and Plant Breeding, Azarbaijan Shahid Madani University, Iran
2 Agronomy and Plant Breeding, Azarbaijan Shahid Madani University, Iran.
3 Department of Horticulture, Tabriz University, Tabriz, Iran
چکیده [English]

Introduction
 NaCl Salinity is one of the major environmental stressors affecting agricultural production everywhere. Salinity impacts the plants by the osmotic stress, nutritional imbalance with plants cells and by reducing the nutrients absorption and reactive oxygen species over-generation, as well as by ionic competition for the absorption, translocation, distribution and ion toxicity inside plants. Under salinity stress, plants develop various physiological and biochemical mechanisms to overcome this conditions, like ion homeostasis and compartmentalization, ion uptake, biosynthesis of osmoprotectants, activation of antioxidant enzymeic (superoxide dismutase, catalase, ascorbate peroxidase and glutathione peroxidase) and nonenzymic compounds (proline) to overcome salinity stress. Optimum nutrition under stressful saline conditions is important to overcome the problem and to produce optimum yield. Pelargonium graveolens is a plant commonly used in food and pharmaceutical industries. Iran has favorable micro-climates for the Pelargonium graveolens, production, and since this plants is in common use with diverse industries, this experiments was conducted to study the effects of foliar spray with Se and nano Fe on growth and physiological traits Pelargonium graveolens under NaCl salinity depression
Materials and Methods
 Two separate experiments were concluded to evaluate the effects of foliar application of selenium and nano-Iron (0, 1.5 and 3 mgL-1) on pelargonium under saline (0, 50 and 100 mM) conditions as factorial based on Completely Randomized Design. In the first experiment, the effects of magnetized Iron and in the second experiment, the effect of selenium were assayed on pelargonium growth and physiological traits (plant dry weight, enzymic activity, elemental content, essential oil percent and oil constituents) under salinity stress.
Results and Discussion
 The results obtained from the first experiment showed that, the aerial parts dry weight, Na, Fe and H2O2 content, catalase activity and oil percent of Pelargonium graveolens were independently affected by the salinity and (1.5 and 3 mgL-1) Fe foliar treatment. At the first experiment the highest amount of K/Na ratio, flavonoid content, K content, malondialdehyde, proline and superoxide dismutase activity were influenced by salinity stress. The top amount amount of plant dry weight, Fe content, K/Na, Na and superoxide dismutase activity were recorded at control plants. The top amounts of Na, proline, malondialdehyde, H2O2 content were recorded at 100 mM salinity stress. control and 50 mM NaCl increased oil percent in plants. Foliar spray with 1.5 and 3 mgL-1 Fe increased catalase, yield, phenolic content and oil percent in plants. At the second experiment; aerial parts dry weight, proline and flavonoid content were influenced by salinity stress. Catalase activity, malondialdehyde, superoxide dismutase activity and H2O2 content were influenced by sole effects of salinity and Se foliar application. Under non saline condition, plant dry weight, superoxide dismutase activity, K content were increased in plant. With increasing salinity to 100 mM NaCl, proline, malondialdehyde and H2O2 content were increased. Se, Na content and K/Na ratio in the second experiment was influenced by the interaction effects of salinity and foliar spray. At the second experiment, the top amount of K/Na ratio were recorded at NaCl0 × 1.5 and 3 mgL-1 Se spray. The top amounts of Na were recorded at NaCl0 × no foliar application. The superoxide dismutase activity, malondialdehyde and K+ were responded to the individual effects of salinity and Se treatment. The highest amounts of total phenolic content was attained by (1.5 and 3 mgL-1) nano Fe and Se treatment in both experiment. With salinity of 50 and 100 mM, the flavonoids contend was increased at both experiments. Foliar spray with 1.5 and 3 mgL-1 Nano Fe and Se increased catalase activity in plants. 1.5 and 3 mgL-1 Se and nano Fe foliar application reduced H2O2 content in plant at both experiment. GC/MS analysis revealed that β-citronellol (12.5-20.5%) was the major constituent with control treatment Citronelly formate (10.75-25.2%) were the dominant constituents of oil control plants. Β-Thujone (12.61%), trans-Rose oxide (2.85- 9 %) and the highest amounts of Aromadendrene (5.42 %) only recorded at control plants. Salinity stress and foliar spray had negative effects on α-Pinene biosynthesis and the highest amounts of α-Pinene was recorded in control plants. The top amounts of Geranyl formate (0.7-7.8 %) was recorded at NaCl50 × 1.5 mgL-1 Fe spray. Y- muurolene (0.4 – 4.06 %) biosynthesis increased at NaCl50 × 1.5 mgL-1 Se.
Conclusion
 Salinity stress involves changes in metabolic processes and various physiological traits, controlled by salinity stress severity. In total, salinity had negative effects on the growth and physiological responses of plants, however, foliar treatment with Se and Fe improved some physiological traits of Pelargonium graveolens.

کلیدواژه‌ها [English]

  • Enzyme activity
  • Essential oil
  • Pelargonium graveolens
  • Proline
  • Total phenolic content
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  • تاریخ دریافت: 24 فروردین 1400
  • تاریخ بازنگری: 04 اردیبهشت 1400
  • تاریخ پذیرش: 11 اردیبهشت 1400
  • تاریخ اولین انتشار: 18 اردیبهشت 1400