تأثیر برخی از ریزوباکتری های محرک رشد و کود نیتروژنی بر ویژگی های مورفولوژیک بابونه آلمانی (Matricaria chamomilla L.)

نوع مقاله : علمی - پژوهشی

نویسندگان

چکیده

به منظور بررسی اثر ریزوباکتر ی های محرک رشد گیاه و کود نیتروژنی بر صفات مورفولوژیک بابونه آلمانی (Matricaria chamomilla L.)، در سال زراعی 87-1386، آزمایشی به صورت فاکتوریل و در قالب طرح بلوک های کامل تصادفی با سه تکرار در مزرعه تحقیقاتی دانشکده ی کشاورزی دانشگاه تبریز اجرا شد. فاکتورهای مورد بررسی در این تحقیق را تلقیح با ریزوباکتری های محرک رشد (B0: عدم تلقیح، B1: تلقیح با ازتوباکتر کروکوکوم، B2: تلقیح با آزوسپیریلوم لیپوفروم و B3: تلقیح با مخلوط دو باکتری) و کود نیتروژنی (0N0:، 50N1:، 100N2: و150N3: کیلوگرم نیتروژن در هکتار) تشکیل دادند. نتایج نشان داد که تلقیح با باکتری ها به طور معنی داری سبب بهبود ارتفاع بوته، قطر ساقه اصلی، تعداد شاخه فرعی، تعداد گل در بوته، وزن خشک گل، برگ، ساقه و وزن خشک کل تک بوته گردید. این صفات در تیمارهای تلقیح با ازتوباکتر، تلقیح با آزوسپیریلوم و تلقیح با مخلوط دو باکتری از نظر آماری مشابه بودند. اثر کود نیتروژنی بر تمامی صفات (به جز تعداد شاخه فرعی) مثبت بود، ولی بین سطوح کودی 50، 100 و 150 کیلوگرم نیتروژن خالص در هکتار اختلاف معنی داری مشاهده نشد. بیشترین و کمترین تعداد و وزن گل تک بوته به ترتیب برای تلقیح با ازتوباکتر + kgN.ha-150 و عدم تلقیح + عدم مصرف کود نیتروژنی ثبت گردید. در مجموع، مصرف کودهای زیستی اثر مثبت و معنی داری بر صفات مورفولوژیک بابونه داشته است. بعلاوه با اضافه کردن kgN.ha-1 50 کارآیی باکتری ها افزایش یافته و بیشترین عملکرد گل تولید شده است.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of some plant growth promoting rhizobacteria and nitrogen fertilizer on morphological characteristics of german chamomile (Matricaria chamomilla L.)

نویسندگان [English]

  • S. Dastborhan
  • S. Zehtab-Salmasi
  • S Nasrollahzadeh
  • A.R. Tavassoli
چکیده [English]

.In order to investigate the effects of plant growth promoting rhizobacteria and nitrogen fertilizer on morphological traits of german chamomile (Matricaria chamomilla L.), a field experiment was carried out as factorial based on randomized complete block design with three replications in Research Farm of the Faculty of Agriculture, University of Tabriz, Iran, during 2007-2008. Factors were inoculation with plant growth promoting rhizobacteria (B0: no-inoculation, B1: inoculation with Azotobacter chroocuccum, B2: inoculation with Azospirillum lipoferum and B3: inoculation with a mixture of two bacteria) and nitrogen fertilizer (N0:0, N1:50, N2:100 and N3:150 kgN.ha-1). Results showed that inoculation with bacteria significantly improved plant height, stem diameter, number of lateral branches, number of flowers per plant, dry weight of flowers, stems, leaves and total dry weight per plant. These traits were significantly similar for inoculation with Azotobacter, inoculation with Azospirillum and inoculation with a mixture of two bacteria. Effect of nitrogen fertilizer on all traits (except number of lateral branches) was positive, but there were no significant differences among 50, 100 and 150 kg.ha-1 nitrogen. The highest and the lowest number and weight of flowers per plant were recorded for inoculation + 50 kg.ha-1 nitrogen application and no-inoculation + no-fertilizer, respectively. In general, application of biofertilizers had positive and significant effects on morphological traits of german chamomile. In addition, with adding 50 kg N.ha-1 the performance of bacteria increased and the highest flower yield were produced.

کلیدواژه‌ها [English]

  • Azospirillum lipoferum
  • Azotobacter chroocuccum
  • Medicinal plants
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