بررسی توانایی باکتری‌های فلاوباکتریوم به عنوان کود زیستی برای افزایش عملکرد گندم

آب و خاک

مقاله 7، دوره 30، شماره 1 - شماره پیاپی 45، بهار 1395، صفحه 125-135  

نوع مقاله: مقالات پژوهشی

شناسه دیجیتال (DOI): 10.22067/jsw.v30i1.31194

نویسندگان

هادی اسدی رحمانی ¹؛ امیر لکزیان ²؛ جلال قادری¹؛ پیمان کشاورز¹؛ حسن حقیقت نیا¹؛ کامران مرزشاهی¹؛ محمود رضا رمضانپور¹؛ علی چراتی آرایی¹؛ علی محمدی ترکاشوند³

¹موسسه تحقیقات خاک و آب

²دانشگاه فردوسی مشهد

³دانشگاه آزاد اسلامی واحد رشت

چکیده

در این تحقیق، کارایی 4 سویه فلاوباکتریوم که در طی آزمایش‌های گذشته از ریزوسفر گندم در ایران جداسازی و شناسایی شده بودند و بر اساس خصوصیات محرک رشدی غربالگری شده بودند، در افزایش عملکرد گندم در پنج استان کشور مورد ارزیابی قرار گرفت. سویه‌های مورداستفاده شامل F9, F11, F40 متعلق به گونهFlavobacterium odoratum و F21 متعلق به گونه F.indoltheticum بودند. باکتری‌ها تا رسیدن به جمعیت مورد نظر تکثیر شده و سپس به‌صورت مایع فرموله شده و در آزمایش‌ها مورد استفاده قرار گرفتند. برای کشت از ارقام اصلاح شده محلی استفاده شد و میزان کودهای شیمیایی بر اساس نتایج تجزیه خاک‌ها مصرف شد. پس از برداشت گیاهان شاخص‌های عملکرد دانه، عملکرد کل (دانه +کاه)، وزن هزار دانه، ارتفاع گیاه، تعداد خوشه در هر متر مربع، تعداد دانه در خوشه و طول خوشه اندازه‌گیری شدند. نتایج نشان داد که سویه‌های مورد استفاده در اکثر استان‌ها سبب افزایش رشد و عملکرد گندم شدند.

کلیدواژه‌ها

سویه؛ شاخص‌های گندم؛ صفات محرک رشد گیاه؛ فلاوسین

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