پاسخ فیزیولوژیک سالیکورنیای اروپایی (Salicornia europaea L) به نانو ذرات پتاسیم در شرایط زمین های خیلی شور اطراف دریاچه ارومیه

نوع مقاله: علمی پژوهشی

نویسندگان

1 دانشیار گروه زراعت، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران

2 دانش آموخته کارشناسی ارشد گروه زراعت، دانشکده کشاورزی، دانشگاه ارومیه، ارومیه، ایران

چکیده

برای بررسی اثر محلول­ پاشی ذرات نانوپتاسیم بر تنظیم ­کننده ­های اسمزی، رنگیزه ­های فتوسنتزی، مجموع کارتنوئیدها و عناصر غذایی بخش هوایی سالیکورنیای اروپایی، یک آزمایش فاکتوریل بر پایه بلوک ­های کامل تصادفی در سال 1391 در زمین­ های اطراف دریاچه ارومیه در سه تکرار انجــام شد. عـوامل آزمایش شامل غلظت ­های محلول ­پاشی در 5 سطح (صفر، 1، 2، 3 و 4 در هزار نانوذرات پتاسیم) و تعداد دفعات محلول­ پاشی در 3 سطح (یک، دو و سه بار محلول ­پاشی) اعمال شدند. اثرمتقابل بین تعداد دفعات محلول­ پاشی و غلظت نانوذرات پتاسیم بر پرولین، قند محلول، کلروفیل کل، کلروفیل a و b، مجموع کارتنوئیدها (گزانتوفیل و کاروتن) و عناصر غذایی (نیتروژن، فسفر، پتاسیم، کلسیم و سدیم) بخش هوایی معنی ­دار شد. بیشترین مقادیر پرولین (1.84 میلی­ گرم در گرم ماده خشک) در یک نوبت محلول­ پاشی 4 در هزار، قند محلول (66.9 میلی­ گرم در گرم ماده خشک) در سه بار محلول ­پاشی با غلظت 2 در هزار، کلروفیل کل (26.23 میلی ­گرم برگرم وزن تر) و کلروفیل b    ( م 22.85 میلی ­گرم برگرم وزن تر) در دو بار محلول­ پاشی، و کلروفیل a   ( م 9.93 میلی ­گرم برگرم وزن تر) در سه بار محلول­ پاشی 4 در هزار نانوذرات پتاسیم به ­دست آمدند. بیشترین مقدار نیتروژن (0.95 درصد) و فسفر بخش هوایی (2.99 گرم در کیلوگرم ماده خشک) مربوط به سه نوبت محلول­ پاشی بود. در حالی­ که بالاترین مقادیر پتاسیم (65.08 گرم در کیلوگرم ماده خشک) و سدیم (403 گرم در کیلوگرم ماده خشک) در دو نوبت، و بالاترین انباشت کلسیم (29.23 گرم در کیلوگرم ماده خشک) درسه نوبت محلول ­پاشی با غلظت چهار در هزار پتاسیم مشاهده شدند. با وجود تجمع زیاد اسمولیت ­ها در محلول­ پاشی پتاسیم، از نظر عناصر غذایی سطوح مختلف محلول­ پاشی دارای برتری معنی­ داری نسبت به هم نبودند.

کلیدواژه‌ها


عنوان مقاله [English]

Physiological Response of Common Glasswort (Salicornia europaea L.) to Potassium Nano-Particles Grown in Saline Soils around the Lake Urmia

نویسندگان [English]

  • Alireza Pirzad 1
  • Mehdi Jabbarzadeh 2
1 Associate Professor, Department of Agronomy, Faculty of Agriculture, Urmia University, Urmia, Iran
2 M.sc. Graduated, Department of Agronomy, Faculty of Agriculture, Urmia University, Urmia, Iran
چکیده [English]

To evaluate the effects of spraying potassium nano-particles on the osmolytes, photosynthetic pigments, total carotenoids and nutrients of aerial parts of common glasswort (Salicornia europaea L.), a factorial experiment based on randomized complete block design with three replications was conducted at the marginal lands of Lake Urmia in 2012. The treatments consisted of application of potassium nano-particle concentrations at five levels (0, 1, 2, 3 and 4 g/l of K nano-particles) applied, once, twice and three times. Results of analysis of variance (ANOVA) showed that there were significant interaction between the levels and concentrations of potassium nano-particles sprayings on aerial parts with respect to their contents proline, total soluble carbohydrates, total chlorophyll, chlorophyll a and b, total carotenoids (xanthophyll and carotene) and nutrients (nitrogen, phosphorus, potassium, calcium and sodium). The highest levels of proline (1.84 mg/g dry weight) at one time spraying 4 g/l of K, total soluble carbohydrates (66.9 mg/g dry weight) at three times spraying 4 g/l, total chlorophyll (26.23 mg/g fresh weight) and chlorophyll b (22.85 mg/g fresh weight) at two times of water spraying, and chlorophyll a (9.93 mg/g fresh weight) at three times of 4g/l of potassium nano-particles sprayings were obtained. The highest nitrogen (0.95 % of aerial parts) and phosphorus (2.99 g/kg dry weight of aerial parts) contents were obtained from three times water spraying. However, the highest amounts of aerial plant part of potassium (65.08 g/kg dry weight) and sodium (403 g/kg dry weight) belonged to the two times, and calcium (29.23 g/kg dry weight) to the three times spraying of 4 g/l nano-potassium. Despite of the high concentration of osmolytes by potassium spraying, the nutrient accumulations levels were not significantly different from each other.

کلیدواژه‌ها [English]

  • Cartenoids
  • Chlorophyll
  • Mineral nutrients
  • Nano-potassium. Osmolytes
  • Salicornia europaea

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