بررسی اثر تلقیح بذر نخود زراعی (Cicer arietinum L.) با کودهای زیستی ریزوبیومی و ریزوباکتری‌های محرک رشد گیاه (PGPR) بر شاخص‌های رشد و تخصیص مواد فتوسنتزی در شرایط دیم و فاریاب

نوع مقاله : مقالات پژوهشی

نویسندگان

دانشکده کشاورزی دانشگاه زنجان

چکیده

به‌منظور ارزیابی تأثیر نژادهای ریزوبیومی و ریزوباکتری‌های محرک رشد گیاه (PGPR) بر تخصیص مواد فتوسنتزی و برخی پارامترهای مرتبط با رشد گیاه نخود زراعی (Cicer arietinum L.) رقم آرمان، آزمایشی به‌صورت کرت‌های خُردشده در قالب بلوک‌های کامل تصادفی در مزرعه پژوهشی دانشگاه زنجان به مرحله اجرا درآمد. در این آزمایش، سطوح آبیاری در دو سطح (آبیاری مطلوب در طی فصل رشد و عدم آبیاری در کل دوره رشد) در کرت‌های اصلی و سطوح کودی در 7 سطح (شاهد یا عدم مصرف کود شیمیایی و بیولوژیکی، مصرف 50‌کیلوگرم اوره در موقع کاشت، تلقیح بذر با Mesorhizobium ciceri نژادSWRI-3، تلقیح بذر با Mesorhizobium ciceri نژادSWRI-17، تلقیح بذر با PGPR، تلقیح مشترک با نژادهای ریزوبیومی (SWRI-3+SWRI-17) و تلقیح مشترک با نژادهای (SWRI-3+SWRI-17+PGPR) در کرت‌های فرعی قرار گرفتند. نتایج این بررسی نشان داد که تیمارهای SWRI-17 و SWRI-3+SWRI-17+PGPR)) در شرایط تنش خشکی به‌دلیل تخصیص بیشتر مواد فتوسنتزی به نیام‌ها و تخصیص کمتر مواد فتوسنتزی به ساقه‌ها و برگ‌ها، عملکرد دانه بیشتری تولید کردند. در شرایط آبیاری مطلوب نیز تیمار SWRI-3+SWRI-17+PGPR)) با تخصیص بیشتر مواد فتوسنتزی به برگ‌ها که احتمالاً باعث جذب بیشتر تشعشع می‌شد، عملکرد دانه بیشتری تولید کردند. بر اساس نتایج این بررسی، تلقیح بذر با ترکیبی از کودهای زیستی ریزوبیومی و PGPR در هر دو شرایط آبیاری مطلوب و دیم، باعث حصول عملکرد بیشتر نسبت به شاهد کودی یا مصرف کود نیتروژنه اوره می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of chickpea (Cicer arietinum L.) seed inoculation with rhizobium strains and plant promoting rhizobacteria (PGPR) on growth indices and photoassimilate partitioning under rainfed and irrigated conditions

نویسندگان [English]

  • Vahideh Khaleghnezhad
  • Farhad Jabbari
Zanjan University
چکیده [English]

This experiment was carried out to evaluate the effect of rhizobium strains and plant growth promoting rhizobacteria (PGPR) on dry matter partitioning and some growth parameters of chickpea (Cicer arietinum L.) Arman cultivar. This research was conducted as split plot based on complete random block design at Zanjan university research farm. Irrigation levels (optimum irrigation during season growth and no irrigation during growth period) were set as main plots and fertilizer level (control or no application chemical and biological fertilizer, 50kg/ha Urea, seed inoculation with Mesorhizobium ciceri strain of SWRI-3, seed inoculation with Mesorhizobium ciceri strain SWRI-17, seed inoculation with PGPR, Co-inoculation with rhizobium strains SWRI-3+SWRI-17 and Co-inoculation with all biofertilizers, SWRI-3+SWRI-17+PGPR were sets as subplots. Based on results, SWRI-17 and SWRI-17+SWRI-3+ PGPR caused more allocation of chickpea photoassimilate to pods and less allocation of photoassimilates to stems and leaves under drought stress. Also, because SWRI-17+SWRI-3+PGPR allocated more photoassimilate to leaves under irrigated condition, caused effective solar irradiance absorption, produce maximum seed yield. Finally our data showed that, sees co-inoculation with rhizobium strains and PGPR resulted more seed yield in comparison with control (no fertilizer usage) or Urea fertilizer application under both irrigated and rainfed conditions.

کلیدواژه‌ها [English]

  • Chickpea
  • Rhizobium strains
  • Plant growth promoting rhizobacteria
  • Photoassimilate
  • Partitioning
  • Seed yield
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