اثر مصرف ریزمغذی های روی و آهن بر عملکرد و خصوصیات مورفولوژیک ریشه جو (Hordeum vulgare L) مایکوریزایی

الموضوعات : اکوفیزیولوژی گیاهان زراعی

شهاب خاقانی ¹

1 - گروه زراعت و اصلاح نباتات، واحد اراک، دانشگاه آزاد اسلامی، اراک، ایران

تاريخ الإرسال : 19 الأحد , ربيع الثاني, 1436 تاريخ التأكيد : 10 الخميس , جمادى الثانية, 1438 تاريخ الإصدار : 16 الثلاثاء , رمضان, 1437

الکلمات المفتاحية: روی, آهن, جو, غنی سازی, قارچ مایکوریزا, صفات ریشه,

ملخص المقالة :

امروزه کمبود عناصر ریزمغذی در تغذیه انسان سبب بروز مشکلات فراوان از جمله سو تغذیه می شود. یکی از برنامه‌های مهم متخصصان تغذیه افزایش میزان این عناصر در بخش‌های خوراکی گیاهان می‌باشد. به منظور تعیین تأثیر قارچ مایکوریزا و ریزمغذی‌ها بر صفات ریشه جو، تحقیقی در پاییز سال 1392 در شهرستان کرج به صورت آزمایش فاکتوریل در قالب طرح بلوک‌های کامل تصادفی با سه تکرار روی گیاه جو رقم بهمن اجرا شد. تیمارها شامل دو سطح قارچ، بدون مصرف، و خاک مصرف گونه intraradices Glomus به میزان 10 کیلوگرم در هکتار به صورت در کنار بذر، سه سطح آهن، بدون مصرف، مصرف 2.5 و 5 کیلوگرم در هکتار از منبع آهن سکوسترین 138 با بنیان Fe-EDDHA و سه سطح روی شاهد، مصرف 25 و 50 کیلوگرم در هکتار سولفات روی بودند. مقایسه میانگین های اثر ساده قارچ مایکوریزا روی صفت‌های طول کل ریشه، تراکم طول ریشه‌ها، طول مخصوص ریشه، درصد کلونیزاسیون ریشه و عملکرد دانه نشان داد که این صفات تحت تیمار قارچ به ترتیب به میزان 900.6 سانتی‌متر، 0.52 سانتی‌متر بر سانتی‌متر مکعب، 1738.1سانتی‌متر بر گرم، 5.41 درصد و 1 تن در هکتار افزایش نشان داده اند. مقایسه میانگین های اثر متقابل سه گانه قارچ مایکوریزا، روی و آهن نشان داد که تیمار مصرف قارچ مایکوریزا، 5 کیلوگرم آهن و عدم مصرف روی بالاترین میزان وزن خشک ریشه را به میزان 2.81 گرم دارا می باشد.

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