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رامین مهدوی مهدی پارسا علی گزانچیان حمیدرضا خزاعی

چکیده

توسعه فضای سبز شهری و چمنکاری از جمله نیازهای بشر امروز است که عامل محدودکننده در این امر کمبود آب می¬باشد. این کمبود بر توسعه، کیفیت و انتخاب نوع پوشش گیاهی تاثیر مستقیم می¬گذارد. از اینرو آزمایش فاکتوریل بر پایه طرح کاملاً تصادفی برای سنجش مقاومت گونه¬های چمن بومی و انتخاب گونه مناسب روی گونه¬های بومی Brumos tomentellus، Festuca rubra، F .arundinacea و رقم تجاری Super sport (شاهد) و سه سطح رطوبتی 85 درصد (شاهد)، 65 درصد و 45 درصد ظرفیت زراعی در مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی خراسان رضوی در شرایط گلخانه انجام گرفت. بر اساس نتایج بدست آمده بیشترین طول شاخساره در تنش خشکی 65 درصد ظرفیت زراعی در گونه F. arundinaceae و کمترین مقدار در چمن سوپر اسپورت، همچنین صفت عرض برگ بیشترین و کمترین مقدار در شرایط تنش به ترتیب در گونه B. tomentellus و چمن سوپر اسپورت مشاهده شد. گونه F. arundinaceae تحت شرایط تنش خشکی بهترین کیفیت ظاهری و بیشترین میزان کلروفیل a و کل را به خود اختصاص داد. تحت تنش خشکی کمترین نشت یونی (66/25 درصد) در گونه F.rubra، بیشترین مقدار محتوای آب نسبی در گونه F. arundinaceae (80/77 درصد)، بیشترین میزان پرولین برگ در گونه B. tomentellus و کمترین مقدار در چمن سوپر اسپورت مشاهده شد. با توجه به نتایج بدست آمده میتوان گفت گونه¬های چمن بومی در شرایط تنش خشکی عملکرد و کیفیت بهتری از چمن¬های وارداتی مانند سوپر اسپورت را دارا می¬باشند.

جزئیات مقاله

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ارجاع به مقاله
مهدویر., پارسام., گزانچیانع., & خزاعیح. (2017). تاثیر تنش خشکی بر کیفیت ظاهری، خصوصیات مرفولوژیکی و فیزیولوژیکی 3 گونه چمن بومی. علوم باغبانی, 31(1), 216-225. https://doi.org/10.22067/jhorts4.v0i0.56264
نوع مقاله
علمی - پژوهشی