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نفیسه اسدی نسب مجید نبی پور حبیب اله روشنفکر افراسیاب راهنما قهفرخی

چکیده

این پژوهش به‌منظور مطالعه تأثیر محلول پاشی اسیدسالیسیلیک و اسیدآبسزیک بر کاهش اثرات سوء تنش گرمای دوره زایشی بر رشد، عملکرد و اجزای عملکرد گندم (رقم فونگ و چمران)، طی سال زراعی 1395-1396، به‌صورت کرت های دو بار خردشده در قالب طرح پایه بلوک کامل تصادفی با سه تکرار در مزرعه آزمایشی دانشگاه شهید چمران اهواز اجرا شد. تنش گرما با توجه به برآورد 30 ساله دمای محیط و بر اساس تاریخ کاشت لحاظ گردید. در این آزمایش سه عامل محلول‌پاشی شامل شاهد (عدم محلول‌پاشی)، اسید آبسزیک (30 میلی‌گرم در لیتر) و اسید سالیسیلیک (69 میلی‌گرم در لیتر) و زمان کاربرد ترکیبات شیمیایی مختلف شامل 15 روز قبل از گلدهی، گلدهی، 15 روز پس از گلدهی و محلول‌پاشی در سه زمان 15 روز قبل از گلدهی، گلدهی و 15 روز پس از گلدهی و ارقام گندم فونگ و چمران، مورد بررسی قرار گرفتند. نتایج نشان داد که محلول‌پاشی سبب افزایش تعداد دانه در بوته (اسید سالیسیلیک با متوسط 5/94 و اسید آبسزیک با متوسط 4/86 دانه در بوته) در مقایسه با تیمار شاهد (با متوسط 75 دانه در بوته) شد که افزایش وزن دانه را به دنبال داشت. با توجه به نتایج صفات وزن دانه در بوته (0/4 گرم در بوته)، وزن هزار دانه (2/41 گرم) و شاخص برداشت (6/49 درصد) به نظر می‌رسد که محلول‌پاشی اسید سالیسیلیک 69 میلی‌گرم بر لیتر در زمان گلدهی و دو هفته قبل و پس‌ از آن در رقم چمران در استان خوزستان و مناطقی با شرایط مشابه، مناسب باشد.

جزئیات مقاله

کلمات کلیدی

اسید آبسزیک, اسید سالیسیلیک, شاخص برداشت, وزن دانه در بوته

مراجع
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ارجاع به مقاله
اسدی نسبن., نبی پورم., روشنفکرح. ا., & راهنما قهفرخیا. (2019). اثر محلول‌پاشی تنظیم‌کننده‌های رشد بر رشد و القای تحمل به گرمای انتهای فصل گندم (Triticum aestivum L.). پژوهشهای زراعی ایران, 17(3), 467-476. https://doi.org/10.22067/gsc.v17i3.74916
نوع مقاله
علمی پژوهشی

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