تاثیر سامانه های خاک‌ورزی، اسید سالیسیلیک و قارچ میکوریزا بر رنگدانه‌های فتوسنتزی و برخی ویژگی های کیفی ذرت

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه زراعت و اصلاح نباتات دانشکده کشاورزی، دانشگاه صنعتی شاهرود

2 استادیار، گروه زراعت و اصلاح نباتات دانشکده کشاورزی، دانشگاه صنعتی شاهرود

3 دانشیار، گروه زراعت و اصلاح نباتات دانشکده کشاورزی، دانشگاه صنعتی شاهرود

4 دانشیار گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه شاهرود

5 استادیار، دانشگاه صنعتی شاهرود، تخصص: اکولوژی گیاهان زراعی، اکولوژی بذر، گیاهان زراعی، علف های هرز و عملکرد و اجزای عملکرد گیاهان زراعی

چکیده

استفاده از روش‌های گوناگون جهت افزایش بنیه بذر و استقرار گیاهچه در گیاهان زراعی راهکار مناسبی برای افزایش کمی و کیفی محصول می باشد. به منظور بررسی تاثیر سامانه های گوناگون عملیات خاک‌ورزی، پیش ‌تیمار بذر و قارچ میکوریزا بر برخی صفات زراعی و فیزیواوژیکی ذرت (Zea mays L.)، آزمایشی به صورت طرح کرت‌های خرد شده فاکتوریل در قالب طرح بلوک-های کامل تصادفی با سه تکرار در سال زراعی 1393در مزرعه‌ی تحقیقاتی دانشگاه صنعتی شاهرود اجرا گردید. تیمارها شامل 3 سامانه خاک‌ورزی (رایج، کاهش یافته و حداقل) به عنوان عامل اصلی، پیش‌ تیمار بذرها (پیش‌تیمار و عدم پیش ‌تیمار با اسید سالیسیلیک 5/0 میلی مولار) و تلقیح بذرها باقارچ میکوریزا (تلقیح و عدم تلقیح) به عنوان عوامل فرعی مورد بررسی قرار گرفتند. نتایج بیانگر تاثیر معنی‌دار برهمکنش سه‌گانه‌ خاک‌ورزی، پیش‌تیمار بذرها و همزیستی قارچ میکوریزا بر صفت ها، مانند شاخص سطح برگ، میزان کاروتنوئید و عملکرد دانه بود. برهمکنش دو عامل خاک‌ورزی و پیش‌ تیمار بذرها بر صفت های پروتئین دانه، محتوای نسبی آب برگ وکلروفیل a وb معنی‌دار بود. ترکیب تیماری خاکورزی رایج و پیش تیمار بذرها وکاربرد قارچ میکوریزا سبب افزایش معنی‌دار صفات شاخص سطح برگ و عملکرد دانه ذرت گردید. استفاده از اسید سالیسیلیک همراه با کاربرد قارچ میکوریزا صفات مورد ارزیابی از جمله محتوای پروتئین دانه، کلروفیل a وb را بهبود بخشید.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effects of tillage systems, salicylic acid and mycorrhizal fungi on photosynthetic pigments and some quality characteristics of maize

نویسندگان [English]

  • afife neisi 1
  • Mahdieh Parsaeian 2
  • Ahmad Gholami 3
  • Mehdi baradaran Firoozabadi 4
  • Hamid Abbasdokht 5
1 Department of Agronomy and Plant Breeding, Faculty of Agriculture shahrood university of Technology
2 Assistant professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture shahrood university of Technology
3 Associate professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture shahrood university of Technology
4 Associate professor, College of Agriculture, Shahrood University, Iran
5 Associate professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture shahrood university of Technology
چکیده [English]

Appling different methods to increase seed vigor and seedling establishment of crops are a suitable approach for quantitative and qualitative increasing of crop yield. In order to evaluate the effects of various tillage systems, seed per-treatment and mycorrhizal fungi on some agronomical and physiological traits of maize (Zea mays L), a split plot factorial experiment based on randomized complete block design was conducted with three replications in 2014 at Experimental Farm of Shahrood University of Technology. In this experiment, three systems of tillage (conventional, reduced and minimum) were considered as main plots. Seed pre-treatment levels (pretreatment with salicylic acid in 0.5 milimolar concentration and non-treated) and seed inoculation with mycorrhiza (inoculated and non-inoculated) were considered as a subplot factors. The results indicated that there were significant effects of the triple interaction of tillage systems× seed pre-treatment × mycorrhizal fungi on LAI, carotenoid content and grain yield. The interactions of tillage systems × seed pre-treatment were significant on seed protein, leaf relative water and chlorophyll a and b contents. The treatment combinations of conventional tillage×seed pre-treatment × mycorrhizal inoculation significantly increased the LAI and maize grain yield. Application of salicylic acid along with mycorrhizal fungi improved the traits, including the protein and chlorophyll a and b contents.

کلیدواژه‌ها [English]

  • Chlorophyll
  • Colonization
  • leaf area index
  • Seed priming
  • Symbiosis
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