اثر قارچ میکوریزا بر خصوصیات مورفولوژیک، مقدار ترکیبات فنلی و فلورسانس کلروفیل گیاه دارویی گاوزبان (Borago officinails L.) تحت خشکی

فیزیولوژی محیطی گیاهی

مقاله 6، دوره 11، شماره 42، تیر 1395، صفحه 46-55   

نوع مقاله: پژوهشی

نویسندگان

علی رحیمی^* ؛ شاهرخ جهانبین؛ امین صالحی؛ هوشنگ فرجی

گروه زراعت و اصلاح نباتات دانشکده کشاورزی دانشگاه یاسوج، ایران

چکیده

خشکی یکی از عوامل اثر گذار بر گیاهان دارویی است و از سویی، نقش قارچ میکوریزا در بهبود عملکرد برخی گیاهان دارویی مواجه با تنش خشکی مؤثر بوده است. لذا به بدین منظور، آزمایشی به صورت کرت‌های خرد شده در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در منطقه بویراحمد و در سال‌های‌ 1394 و 1395 اجرا ‌گردید. عامل‌های آزمایش شامل سطوح آبیاری (عامل اصلی) به صورت آبیاری پس از 30، 60، 90، 120 و 150 میلی‌متر تبخیر آب از تشتک تبخیر کلاس  Aو قارچ میکوریزا (عامل فرعی) در سطوح عدم کاربرد، کاربرد Glomus mosseaeو کاربرد Glomus intraradices لحاظ ‌شد. نتایج نشان داد که اثر سال بر صفات مورد مطالعه گاوزبان معنی‌دار نبود. اثر تنش خشکی بر شاخص سطح برگ گاوزبان معنی‌دار و در آبیاری پس از 30 و 60 میلی‌متر تبخیر بالاترین شاخص سطح برگ بدست آمد. کاربرد قارچ‌های میکوریزا  Glomus mosseaeو Glomus intraradices مقدار فنل گاوزبان را نسبت به شرایط عدم کاربرد قارچ به ترتیب 13 و 9 درصد افزایش دادند. با افزایش شدت تنش خشکی از 30 میلی‌متر به 150 میلی‌متر تبخیر از تشتک تبخیر، ارتفاع، تعداد شاخه‌های فرعی و فلورسانس کلروفیل کاهش یافتند، اما کاربرد قارچ میکوریزا توانست صفات مورد مطالعه گاوزبان را در شرایط تنش خشکی در این بررسی افزایش دهد و از میزان اثرات منفی تنش خشکی بکاهد.

کلیدواژه‌ها

آبیاری؛ ترکیبات فنلی؛ شاخص سطح برگ؛ شاخه‌های فرعی؛ فلورسانس کلروفیل

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