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اکبر انگوتی جعفر حاجی لو فرهنگ رضوی

چکیده

این تحقیق به منظور بررسی تغییرات آنزیم­های آنتی اکسیدانی و پرولین در طی رکود جوانه گل گیلاس ارقام زودرس، سیاه شبستر، زرد مشهد و یک ژنوتیپ محلی از آلبالو در آزمايشگاه بيولوژي گلدهي و فيزيولوژي رشد و نمو گروه علوم باغباني دانشکده کشاورزي دانشگاه تبريز در سال زراعی 95-1394 انجام شد. نمونه­برداری از جوانه­های درختان موجود در ایستگاه تحقیقاتی خلعت پوشان بصورت ماهانه انجام پذیرفت. وضعیت جوانه­ها از نظر تغییرات آنزیم­های آنتی­اکسیدانی (کاتالاز، پراکسیداز و سوپراکساید دیسموتاز) در هر مرحله نمونه­برداری مورد بررسی قرار گرفت. سرماهای تجمعی در هر یک از این تاریخ­های نمونه­برداری بر طبق مدل یوتا محاسبه گردید. همچنین تغییرات وزن تر جوانه­ها در طول دوره رکود بصورت هفتگی ارزیابی و در قالب طرح بلوک­های کامل تصادفی با 5 تکرار تجزیه شد. نتایج نشان داد از نظر میزان فعالیت آنزیم­های کاتالاز، پراکسیداز و سوپراکسید دیسموتاز در طی رکود جوانه گل، اختلاف آماری در سطح احتمال 1 درصد دیده شد. در سه آنزیم مذکور آلبالو دارای بیشترین و گیلاس رقم سیاه شبستر کمترین میزان را دارا بود بطوری که بیشترین و کمترین میزان فعالیت آنزیمی به ترتیب در 360 و 820 واحد سرمایی میزان دیده شد. از نظر میزان پرولین بین مراحل مختلف نمونه­برداری و بین ارقام مورد مطالعه اختلاف آماری در سطح احتمال 1 درصد مشاهده شد. نتایج بیانگر آن است که رقم گیلاس زود­رس دارای بیشترین میزان پرولین و آلبالو کمترین میزان این اسید آمینه را داشته است.

جزئیات مقاله

کلمات کلیدی

پراکسیداز, رکود جوانه, سوپراکسید دیسموتاز, کاتالاز, مدل یوتا

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ارجاع به مقاله
انگوتیا., حاجی لوج., & رضویف. (2019). بررسی تغییرات آنزیم¬های آنتی اکسیدانی و پرولین طی رکود جوانه گل در چند رقم گیلاس و آلبالو. علوم باغبانی, 33(4), 623-637. https://doi.org/10.22067/jhorts4.v33i4.74475
نوع مقاله
علمی - پژوهشی