بررسی تأثیر محلول‌پاشی عناصر سیلیسیم و پتاسیم بر برخی ویژگی‌های بیوشیمیایی و اکوفیزیولوژی دانهال‌های پستۀ رقم بادامی ریز زرند کرمان در شرایط تنش شوری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، دانشگاه ولی‌عصر(عج)، رفسنجان

2 استادیار، دانشگاه ولی‌عصر(عج)، رفسنجان

3 دانشیار، دانشگاه ولی‌عصر(عج)، رفسنجان

چکیده

به­منظور بررسی تأثیر تیمارهای سیلیکات پتاسیم و سولفات پتاسیم بر ویژگی‌های رشدی دانهال­های پستۀ رقم بادامی ریز زرند کرمان در شرایط تنش شوری، پژوهشی به‌صورت فاکتوریل با سه عامل شامل دو سطح شوری از منبع NaCl (0 و 90 میلی­مولار)، سه سطح سیلیسیم از منبع سیلیکات پتاسیم (0، 50 و 100 میلی­گرم بر لیتر) و سه سطح پتاسیم از منبع سولفات پتاسیم (0، 1 و 2 درصد)، در قالب طرح کامل تصادفی با سه تکرار انجام شد. 45 روز پس از سبز شدن بذرها تنش شوری اعمال شد. محلول­پاشی با سیلیکات پتاسیم و سولفات پتاسیم یک هفته پیش از آغاز تنش شوری و یک هفته پس از آغاز تنش شوری بود. نتایج نشان داد که شوری آب موجب کاهش محتوای آب نسبی برگ، کارایی استفاده از آب، مجموع پروتئین­های محلول برگ و افزایش میزان نشت الکترولیت­ها، پرولین، قندهای محلول و ترکیب‌های فنلی برگ و گلایسین­بتائین برگ و ریشه شد. کاربرد سیلیکات پتاسیم و سولفات پتاسیم باعث افزایش معنی­دار محتوای آب نسبی برگ، کارایی استفاده از آب، مجموع پروتئین­های محلول، پرولین، قندهای محلول و ترکیب‌های فنلی برگ و گلایسین­بتائین برگ و ریشه و کاهش میزان نشت الکترولیت­های برگ در شرایط تنش شوری شدند. تیمار شوری در مقایسه با شاهد محتوای آب نسبی برگ را 52/31 در صد کاهش داده و نشت الکترولیت‏ها را 28/91 درصد افزایش داد درحالی‌که تیمار 50 میلی‏گرم بر لیتر سیلیکات پتاسیم و 2 درصد سولفات پتاسیم در شرایط شوری محتوای آب نسبی برگ را 67/51 درصد افزایش و نشت الکترولیت‏ها را 62/67 درصد کاهش داد. 

کلیدواژه‌ها

عنوان مقاله [English]

Study of foliar application effect of silicon and potassium elements on some biochemical and ecophysiological traits of Pistachio seedlings cv. Badami E-Riz Zarand Kerman under salinity stress

نویسندگان [English]

  • Maryam Ranjbar 1
  • Majid Esmaeilizadeh 2
  • Hamid Reza Karimi 3
  • Mohammad Hossein Shamshiri 3
1 M.Sc. Student, Vali-E-Asr University, Rafsanjan, Iran
2 Assistant Professor, Vali-E-Asr University, Rafsanjan, Iran
3 Associate Professor, Vali-E-Asr University, Rafsanjan, Iran
چکیده [English]

In order to study the effect of different amounts of potassium silicate and potassium sulfate on growth traits of pistachio seedlings cv. Badami-E-Riz Kerman, an experiment was done as factorial with three factors, including two levels of salinity as source of NaCl (0 and 90 mM), three levels of silicon as source of potassium silicate (0, 50 and 100 mgL-1) and three levels of potassium as source of potassium sulfate (0, 1 and 2%), in compeletely randomized design with three replications. 45 days after the emergence of seeds, seedlings were exposed to salt stress foliar application of potassium silicate and potassium sulfate, both a week before and after starting salinity stress. The results showed that salinity decreased leaf relative water content, water use efficiency, leaf total soluble protein and increased electrolytes leakage, proline, soluble sugars, phenolic compounds in leaf and glycine betaine in leaf and root. Foliar application of potassium silicate and potassium sulfate increased leaf relative water content, water use efficiency, leaf total soluble protein, proline, soluble sugars, phenolic compounds and glycine betaine in leaf and roots, and reduced electrolytes leakage under salinity conditions. The most effective treatments were 50 mgL-1 potassium silicate and 2% potassium sulfate.

کلیدواژه‌ها [English]

  • abiotic stress
  • Glycine betaine
  • Pistachio
  • Potassium Silicate
  • potassium sulfate
  • proline

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سابقه مقاله

  • تاریخ دریافت: 16 اسفند 1393
  • تاریخ بازنگری: 23 شهریور 1394
  • تاریخ پذیرش: 08 مهر 1394

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