مطالعه اثر کاربرد برگی پتاسیم، روی و بور بر پروفیل اسید‌های‌چرب سه رقم زیتون

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز

2 استاد، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز

3 استادیار، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز

4 استاد، دانشکده علوم پایه، دانشگاه شهید چمران اهواز، اهواز

چکیده

بررسی تأثیر محلول­پاشی برگی پتاسیم، روی و بور بر پروفیل اسید­های چرب میوه سه رقم زیتون کرونایکی، کایلت و میشن در قالب آزمایش فاکتوریل بر پایه طرح بلوک­های کامل تصادفی با سه تکرار در سال 1395 در باغ زیتون دانشگاه شهید چمران صورت گرفت. درختان چهار مرحله، یک هفته قبل از تمام گل، دو هفته بعد از تمام گل، مرحله سخت­شدن هسته و مرحله تجمع و سنتز روغن، با آب مقطر (شاهد) (T0)، ترکیب سولفات­پتاسیم، سولفات­روی و اسید بوریک از هر کدام 1000 میلی­گرم در لیتر (T1) و ترکیب 2000 میلی‌گرم در لیتر از هر کدام آنها (T2) محلول­پاشی شدند. بین تیمار­های محلول­پاشی از نظر میزان ­اسید اولئیک، اسید پالمیتیک­، اسید لینولئیکو نسبت اسید اولئیک به اسید لینولئیک اختلاف معنی­داری مشاهده گردید، همچنین ترکیب اسید­های چرب در ارقام مختلف، متفاوت بود و شرایط محل رشد به­ویژه، تغذیه طی رشد میوه در ترکیب اسید­های چرب تأثیر داشت و تیمار  T2بیشترین تأثیر مثبت در بهبود کیفیت روغن نسبت به­سایر تیمار­ها به­خصوص در رقم کایلت داشت؛ بنابر­این در شرایط اهواز با ارتفاع پایین و دمای زیاد، محلول­پاشی برگی در طی رشد میوه می­تواند با تغییر در میزان اسید­های چرب با افزایش اسیداولئیک و کاهش اسیدپالمیتیکمنجر به بهبود کیفیت روغن میوه زیتون گردد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Study Effect of Potassium, Zinc and Boron foliar application on fatty acid compositions of three Olive cultivar

نویسندگان [English]

  • Reza Gholami 1
  • Noroallah Moallemi 2
  • Esmaeil Khaleghi 3
  • Seyyed Mansour Seyyednejad 4
1 Ph. D. Candidate, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Iran
2 Professor, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Iran
3 Assistant Professor, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Iran
4 Professor, Faculty of Sciences, Shahid Chamran University of Ahvaz, Iran
چکیده [English]

This study was carried out to investigate the effect of foliar spraying of Potassium, Boron and Zinc on the fatty acid composition of the fruit of three olive, “Caillet”, “Koroneiki” and “Mission” in the olive orchard of of Shahid Chamran University of Ahvaz  in 2016. The research was performed in a factorial experiment based on a randomized complete blocks design with three replications. Spray treatments were included T0 (Distilled water as control), T1 (1000 mg/l potassium sulfate + 1000 mg/l boric acid + 1000 mg/l zinc sulfate) and T2 (2000 mg/l potassium sulfate + 2000 mg/l boric acid +2000 mg/l zinc sulfate). The results showed that there was a significant difference between the foliar treatments in terms of oleic acid, palmitic acid, linoleic acid and oleic acid to linoleic acid ratio. Also, the fatty acids composition was different in different cultivars and growth conditions in particular, nutrition during fruit growth had an effect on fatty acids composition, and T2 treatments had the most positive effect on oil quality improvement compared to other treatments, especially in the “Caillet” variety. Therefore, under low altitude and high temperature conditions in Ahvaz, foliar spraying during fruit growth can improve the quality of olive oil by altering the amount of fatty acids by increasing oleic acid and decreasing palmitic acid.

کلیدواژه‌ها [English]

  • Food elements
  • oleic acid
  • palmitic acid
  • spraying
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