نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد علوم و تکنولوژی بذر، پژوهشکده زیست فناوری، دانشگاه شهرکرد
2 گروه مهندسی زراعت، دانشکده کشاورزی، دانشگاه شهرکرد
3 دانشکده علوم کشاورزی، دانشگاه پیام نور
چکیده
به منظور بررسی اثر تنش خشکی و تلقیح گیاه با باکتری‌های ریزوسفری، بر خصوصیات اگرومرفولوژیک بادرنجبویه آزمایشی به صورت کرت‌های خرد شده در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در مزرعه تحقیقاتی دانشگاه شهرکرد در سال 1398 انجام شد. تنش کمبود آب در سه سطح (آبیاری کامل، 75 و 50 درصد آبیاری کامل) و تلقیح با باکتری‌های محرک رشد در 5 سطح (شاهد (عدم تلقیح باکتریایی)، تلقیح با باکتری‌های Azospirillum lipoferum، Bacillus sp. strain A، Bacillus amyloliquefaciens و Streptomyces rimosus) به ترتیب به عنوان فاکتورهای اصلی و فرعی در نظر گرفته شدند. نتایج تحقیق نشان داد اثر باکتری و تنش خشکی بر ارتفاع بوته، تعداد شاخه‌های اصلی، تعداد شاخه‌های فرعی، وزن‌خشک برگ، وزن‌خشک ساقه، سطح برگ، درصد اسانس، عملکرد بیولوژیک و عملکرد اسانس معنی‌دار بود. افزایش شدت تنش منجر به کاهش در تمام صفات مورد بررسی شد درحالی که تلقیح گیاهان با باکتری‌ها نقش مهمی در افزایش این صفات نسبت به شاهد نشان داد و کمترین مقادیر در تیمارهای بدون تلقیح مشاهده شد. با توجه به نتایج این آزمایش به منظور بهبود خصوصیات آگرومورفولوژیک و عملکرد کمی و کیفی بادرنجوبه در شرایط آبیاری کامل و روش‌های کم آبیاری، تلقیح گیاه با باکتری‌های B. amyloliquefaciens ، A. lipoferum و S. rimosus توصیه می‌شود.
کلیدواژه‌ها
موضوعات
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