تاثیر غلظت های مختلف نیتروژن و ترکیب بستر کشت بر رشد و کیفیت بنت قنسول رقم ’نوئل رد‘

Subject Areas : Journal of Ornamental Plants

سمیه کاتبی ¹ , پرویز نوروزی ² , جواد رضاپور فرد ³

1 - کارشناس ارشد مهندسی علوم باغبانی، دانشکده کشاورزی و منابع طبیعی دانشگاه ارومیه، ارومیه، ایران
2 - استادیار علوم باغبانی، دانشکده کشاورزی و منابع طبیعی دانشگاه ارومیه، ارومیه، ایران
3 - استادیار علوم باغبانی، دانشکده کشاورزی و منابع طبیعی دانشگاه ارومیه، ارومیه، ایران

Received: 2020-05-10 Accepted : 2020-12-15 Published : 2021-03-01

Keywords: کیفیت, نیترات, آنتوسیانین, پیت‌ماس, بنت‌ قنسول,

Abstract :

بنت­­ قنسول(Euphorbia pulcherrima) گیاهی گلدانی است که براکته‌های رنگین آن در روزهای کوتاه تشکیل می­شود. در این تحقیق اثر غلظت­های مختلف نیتروژن (180، 230، 280 و330 میلی‌گرم بر لیتر) و بسترهای کشت (پیت ماس و پرلیت به نسبت 1:2 و کوکوپیت و پرلیت به نسبت 1:2) بر برخی صفات گیاه بنت قنسول رقم ’نوئل‌رد‘ مطالعه شد. این آزمایش به­صورت فاکتوریل در قالب طرح کاملا تصادفی با 8 تیمار و 3 تکرار اجرا گردید. نتایج حاصل از بررسی صفات اندازه‌گیری شده نشان داد که بیشترین میزان ارتفاع، قطر تاج بوته و میزان نیتروژن در غلظت 230 پی‌پی‌ام و بستر کوکوپیت + پرلیت ایجاد شدند. غلظت 230 میلی‌گرم بر لیتر نیتروژن سبب افزایش میزان وزن تر ساقه و ریشه نسبت به سایر تیمارها شد. غلظت 280 میلی‌گرم بر لیتر نیتروژن و کوکوپیت + پرلیت باعث بیشترین مقدار وزن خشک ساقه شد. تیمار پیت‌ماس + پرلیت و330 میلی‌گرم بر لیتر نیتروژن باعث ایجاد حداکثر مقدار میزان کلروفیل a و آنتوسیانین براکته شد. براساس نتایج پژوهش حاضر غلظت 230 و 280 میلی‌گرم بر لیتر نیتروژن و بستر کوکوپیت موجب بهبود شاخص­های رشدی و در نتیجه بهبود خصوصیات کیفی بنت قنسول شده است.

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