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مهدی یعقوبی مهدی پارسا علی گزانچیان حمیدرضا خزاعی

چکیده

از مهم ترین مشکلات در جهت توسعه فضای سبز و چمن کاری، کمبود منابع آبی می¬باشد. این تحقیق به منظور بررسی عملکرد و مقاومت چمن‌های بومی در برابر تنش رطوبتی به صورت آزمایش فاکتوریل در قالب طرح کاملا تصادفی در سال 1392 در مرکز تحقیقات کشاورزی و منابع طبیعی خراسان به اجرا در آمد. گونه¬های مختلف چمن بومی اگروپیرون شامل A. elongatum ، A. desertorum، A. cristatum و چمن وارداتی Super sport و 3 سطح تنش شامل تنش شدید (45 درصد ظرفیت زراعی)، تنش متوسط (65 درصد ظرفیت زراعی) و شاهد (85 درصد ظرفیت زراعی) تیمارهای آزمایش را تشکیل می¬دادند. نتایج آزمایش نشان داد که تحت شرایط تنش رطوبتی گونه بومی A. elongatum بیشترین طول برگ، میزان کلروفیل a و b، کلروفیل کل، پرولین و محتوای آب نسبی برگ (RWC) را با 12/82 درصد و کمترین میزان را چمن سوپر اسپورت به خود اختصاص داد. کمترین نشت یونی با 91/17 درصد نیز در گونه A. elongatum مشاهده شد. می¬توان گفت گونه¬های چمن بومی مقاومت بیشتری نسبت به چمن وارداتی تحت شرایط خشکی داشتند و بهترین کیفیت ظاهری در 2 گونه بومی A. elongatum و A. desertorum تحت تنش 65 درصد ظرفیت زراعی رویت شد.

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ارجاع به مقاله
یعقوبیم., پارسام., گزانچیانع., & خزاعیح. (2017). بررسی چگونگی پاسخ های مورفولوژیکی و فیزیولوژیکی چمن بومی جنس آگروپیرون به تنش رطوبتی. علوم باغبانی, 31(2), 389-400. https://doi.org/10.22067/jhorts4.v0i0.56268
نوع مقاله
علمی - پژوهشی