تأثیر میکوریزا و سالیسیلیک اسید بر عملکرد و شاخص‌های فیزیولوژیک ذرت (Zea mays)

نوع مقاله : پژوهشی

نویسندگان

گروه زراعت، واحد چالوس، دانشگاه آزاد اسلامی، چالوس، ایران.

چکیده

به‌منظور بررسی تأثیر همزیستی میکوریزایی و محلول‌پاشی سالیسیلیک اسید بر عملکرد و رنگریزهای فتوسنتزی ذرت آزمایشی به‌صورت اسپلیت پلات در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در سال‌های 1397-1398 طی دو سال زراعی در مزرعه تحقیقاتی دانشگاه آزاد اسلامی واحد چالوس انجام شد. فاکتورهای آزمایش شامل میکوریزا گونه­های (G. mosseae)، (G. geosporum) و (G. intraradices) در دو سطح (عدم مصرف و مصرف  میکوریزا) و اسید سالیسیلیک در دو سطح (عدم مصرف و مصرف یک میلی‌مولار اسید سالیسیلیک) بود. نتایج نشان داد که اثرات دوگانه میکوریزا  ×سال  و میکوریزا  × اسید سالیسیلیک بر تمام صفات مورد بررسی تأثیر مثبت و معنی­داری داشت. بیشترین ارتفاع بوته در تیمار قارچ
(G. intraradices) و در شرایط محلول­پاشی با اسید سالیسیلیک به­دست آمد. همچنین صفات وزن هزار دانه، عملکرد دانه، فسفر، پتاسیم و نیتروژن دانه و کلروفیل a و b در تیمار قارچ G. mosseae در شرایط محلول‌پاشی با اسید سالیسیلیک نتیجه بهتری نسبت به دیگر تیمارها مشاهده شد. به طور کلی، نتایج نشان داد که مصرف میکوریزا به همراه محلول‌پاشی با اسید سالیسیلیک باعث افزایش رشد رویشی و زایشی می­شود. این افزایش به دلیل افزایش فتوسنتز و در نتیجه افزایش مواد فتوسنتزی بیشتری است که در جهت توسعه­ی اندام‌های زایشی اختصاص داده شده است، که در نهایت موجب بهبود عملکرد ذرت می‌شود. 

کلیدواژه‌ها


عنوان مقاله [English]

Effect of mycorrhiza and salicylic acid on yield and physiological parameters of maize (Zea mays)

نویسندگان [English]

  • Poria Mazloom
  • mohsen peyman younespor
  • Morteza Sam daliri
  • Amir Abbas Mousavi Mirkalaei
  • Morteza Moballeghi,
Department of Agriculture, Islamic Azad University, Chalous Branch, Chalous, Iran
چکیده [English]

In order to investigate the effect of mycorrhizal symbiosis and foliar application of salicylic acid on yield and photosynthetic pigments of corn, an experiment was conducted in the form of split plot in a randomized complete block design with three replications during two cropping years 2018-2019 in the research farm of Islamic Azad University, Chalous Branch. Experimental factors included mycorrhiza species (G. mosseae), (G. geosporum), and (G. intraradices) at two levels (no consumption and consumption of mycorrhiza) and salicylic acid at two levels (no consumption and consumption of 1 mM salicylic acid). Results showed that the dual effects of mycorrhiza × year and mycorrhiza × salicylic acid had a positive and significant effect on all studied traits. The highest plant height was obtained in the treatment with G. intraradices and salicylic acid. Also, 1000 grain weight, seed yield, phosphorus, potassium, and nitrogen contents of seeds, and chlorophyll a and b levels were higher in salicylic acid foliar treatment compared with the other treatments. In general, the results showed that mycorrhizal application with salicylic acid spray increased vegetative and reproductive growth. This enhancement is due to the increase in photosynthesis index and, consequently an increase in photosynthetic materials dedicated to the development of reproductive organs, which ultimately improves corn yield.

کلیدواژه‌ها [English]

  • chlorophyll a
  • Grain yield
  • Foliar application
  • Mycorrhizal symbiosis
  • Salicylic acid
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