برهم‌کنش آرسنیک و فسفر بر جذب کلسیم، منیزیم و پتاسیم توسط گندم (Triticum aestivum) و گل جعفری (Tagestes erecta)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی سابق کارشناسی ارشد گروه علوم خاک، دانشکده کشاورزی، دانشگاه تبریز

2 دانشیار گروه علوم خاک، دانشکده کشاورزی، دانشگاه تبریز

3 استادیار گروه باغبانی، دانشگاه آزاد تبریز

چکیده

نگرانی­هایی در خصوص آلودگی منابع خاک و آب به آرسنیک (As) و خطر بالقوه آن برای سلامتی انسان­ها و محیط­زیست وجود دارد. گندم و گل جعفری به ترتیب به عنوان یکی از مهم­ترین گیاهان زراعی و زینتی هستند که در گیاه­پالایی خاک­های آلوده هم مورد استفاده قرار می­گیرند. برای مطالعه اثر برهم­کنش آرسنیک و فسفر(P) بر غلظت و جذب کلسیم (Ca)، منیزیم (Mg) و پتاسیم (K)، در گندم و گل جعفری، دو آزمایش فاکتوریل در قالب طرح بلوک­­های کامل تصادفی با سه سطح آرسنیک (0، 50 و 100 میلی گرم بر کیلوگرم) و سه سطح فسفر (صفر، 20 و 40 میلی گرم بر کیلوگرم) و در سه تکرار در گلخانه انجام شد. نتایج نشان داد که با حضور As جذب عناصر کلسیم، منیزیم و پتاسیم در اندام های هوایی و ریشه گندم و گل جعفری، کاهش یافت. با افزایش سطوح فسفر، جذب کلسیم در ریشه گل جعفری و جذب منیزیم و پتاسیم در اندام­های هوایی و ریشه گندم و گل جعفری افزایش یافت. همچنین برهم­کنش آرسنیک و فسفر در اکثر ویژگی­های اندازه­گیری شده گیاهان معنی­دار بود و مصرف فسفر توانست تا حدودی اثر منفی آرسنیک را تعدیل کند.

کلیدواژه‌ها

عنوان مقاله [English]

Interactive Effects of Arsenic and Phosphorus on the Uptake of Calcium, Magnesium and Potassium by Wheat (Triticum aestivum) and Marigold (Tagestes erecta)

نویسندگان [English]

  • Nasrin Mirzaei 1
  • Adel Reyhanitabar 2
  • Shahin Oustan 2
  • Mahdieh Haghighat-Afshar 3
1 Former Graduate Student, Department of Soil Science, College of Agriculture, University of Tabriz.
2 Associate Professor, Department of Soil Science, College of Agriculture, University of Tabriz
3 Assistant Professor, Department of Horticulture, Islamic Azad University- Tabriz
چکیده [English]

There are concerns regarding arsenic (As) contamination of soil and water resources and its potential risk to human health and environment safety. Wheat and marigold as one of the most important agricultural crops and ornamental plant, respectively, are used in phytoremediation of contaminated soils. For evaluating the effects of As and phosphorus (P) on concentration and uptake of calcium (Ca), magnesium (Mg) and potassium (K) in wheat and Marigold, a two factorial experiment was conducted consisting of two factors including three levels of As (0, 50 and 100 mg kg-1) and P (0, 20 and 40 mg kg-1). The experiments were carried out in a randomized complete block design with three replications in greenhouse conditions. Results indicated that content of Ca, Mg, and K in shoot and root of wheat and marigold decreased with increasing As levels. With increasing P levels, content of Ca in root of marigold, the content of Mg and K in shoot and root of wheat and marigold was increased. Also, interaction between As×P on most measured attributes of the plants was significant and P application partly offset the negative effect of As.

کلیدواژه‌ها [English]

  • Arsenic
  • Calcium
  • Marigold
  • Phosphorous
  • Potassium
  • Wheat

مراجع

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  • تاریخ دریافت: 18 اسفند 1394
  • تاریخ پذیرش: 18 اسفند 1394

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