Growth, yield index, and photosynthesis traits of sweet pepper grown in vermicompost inoculated with Arbuscular mycorrhiza

Document Type: Full Article

Authors

Department of Horticulture, College of Agriculture, Isfahan University of Technology, Isfahan I. R. Iran

Abstract

ABSTRACT- The aim of this study was to investigate the effects of “Arbuscular mycorrhizal fungi” (AM fungi) density and different growing media on the growth, photosynthesis parameters and yield of sweet pepper under greenhouse conditions. The experiment was conducted as a factorial plan based on control randomized design (CRD ( by using three growing media, Perlite (PR) and cocopeat (Co) (PR50:Co50 V:V) (C), PR25:Co50: vermicompost (V) 25 (C+V25) and PR25:Co25: V50 (C+V50), and three levels of AM fungi inoculation (0, 1000 and 2000 spores) with three replications. Results indicated that AM fungi inoculation and mixture of vermicompost increased shoot and root fresh weights,Total Suspended Solids (TSS), fruit fresh and dry weights in the C+V50 compared to other treatments. Fruit yield increased more than 100 and 94.95% with AM-fungi inoculation with 2000 spores at C+V25 and V50 treatments, respectively. Mycorrhiza dependency decreased with high application rate of vermicompost, and vermicompost dependency was the highest in non-inoculated plants. With AM-fungi inoculations, the chlorophyll level (SPAD values) was increased in C+V25 by 100%.  Photosynthesis rate was increased in C+V25×M1 significantly compared to other treatments. Nitrogen, phosphorus, and potassium concentrations significantly increased by mycorrhiza inoculation in the high vermicompost ratio.

Keywords


Article Title [Persian]

رشد، شاخص عملکرد و فتوسنتز فلفل دلمه‌ای رشدیافته در ورمی-کمپوست تلقیح شده با Arbuscular mycorrhiza

Authors [Persian]

  • مریم حقیقی
  • محمدرضا برزگر
گروه باغبانی، دانشکده کشاورزی، دانشگاه صنعتی اصفهان، اصفهان ، ج. ا. ایران
Abstract [Persian]

چکیده- هدف اصلی این پژوهش بررسی اثرات غلظت­های قارچ مایکوریز(Arbuscular mycorrhiza) و محیط کشت­های مختلف در فاکتورهای رشد، صفات فتوسنتز و عملکرد فلفل دلمه­ای تحت شرایط گلخانه ای بود. این آزمایش بصورت فاکتوریل در قالب طرح کاملا تصادفی با استفاده از 3 محیط کشت، پرلایت(PR) و کوکوپیت(Co) با نسبت حجمی 50 به 50 (C)، نسبت حجمی 25 پرلایت به 50 کوکوپیت و 25 ورمی کمپوست(V)،(V25)و نسبت حجمی 25 پرلایت به 25 کوکوپیت به 50 ورمی کمپوست(V50) و سه سطح مایکوریز(گیاه بدون مایکوریز(M0)، مایکوریز با 1000  (M1)و 2000 (M2)  اسپور و سه تکرار اجرا شد. نتایج نشان داد که تلقیح مایکوریز و مخلوط ورمی­کمپوست وزن تر ریشه و شاخه را افزایش داد. تلقیح مایکوریز با 2000 اسپور به طور معنی­داری حجم ریشه را در تیمار  C+V50 و C+V25 افزایش داد.  برداشت میوه با M2 نسبت به M1 در C+V25 و V50 سریعتر بود. عملکرد میوه با تلقیح 2000 اسپور مایکوریز در محیط کشت V25 و C+V50 افزایش داشت. وابستگی مایکوریز با کاهش کاربرد ورمی­کمپوست کاهش یافت و  بیشترین وابستگی ورمی­کمپوست در گیاهان بدون تلقیح مایکوریز بود. هر دو سطح مایکوریز تلقیح شده شاخص کلروفیل را افزایش داد  و بیشترین افزایش با تلقیح M1 در تیمارهای C و C+V50 بود. M1 به میزان قابل توجهی سرعت فتوسنتز را در V25 C+ افزایش داد و سرعت فتوسنتز در سایر محیط­ها اختلاف معنی­دار نداشت. میزان نیتروژن، فسفر و پتاسیم توسط تلقیح مایکوریز در تیمارهای با ورمی­کمپوست بالا نسبت به بقیه تیمار ها افزایش یافت.

Keywords [Persian]

  • واژه‏های کلیدی:
  • آلومتری عملکرد
  • سرعت فتوسنتز
  • غلظت نیتروژن
  • وابستگی مایکوریز
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