اثر قارچ میکوریز آربسکولار (Glomus mosseae) و باکتری سودوموناس فلورسنس بر رشد رویشی دانهال‏های پستۀ رقم قزوینی در چهار رژیم مختلف آبیاری

نوع مقاله: مقاله کامل

نویسندگان

1 دانشجوی سابق کارشناسی ارشد ، دانشکدة کشاورزی دانشگاه ولی عصر‌(عج) رفسنجان

2 استادیار دانشکدة کشاورزی دانشگاه ولی عصر‌(عج) رفسنجان

3 استادیار، دانشکده کشاورزی، دانشگاه ولیعصر (عج)، رفسنجان

چکیده

به‌منظور بررسی اثر همزیستی قارچ میکوریز آربسکولار(Glomusmosseae) و باکتری سودوموناس فلورسنس[1] سویه P52 بر رشد رویشی دانهال‏های پستۀ رقم قزوینی در شرایط تنش خشکی، آزمایشی با چهار سطح تنش خشکی (100‌درصد ظرفیت مزرعه به‌منزلۀ شاهد و سطوح 75، 50 و 25 درصد ظرفیت مزرعه) و چهار سطح از کود زیستی[2] (گیاهان بدون میکوریز و باکتری به‌منزلۀ گیاهان شاهد، تیمار میکوریز، تیمار باکتری و تیمار ترکیبی میکوریز و باکتری) اجرا شد. در این آزمایش کاربرد باکتری به‌تنهایی و همچنین در سطوح مختلف خشکی نتوانست بر آلودگی ریشه تأثیر‌گذار باشد اما افزایش تنش خشکی به‌تنهایی سبب افزایش آلودگی ریشه شد. بیشترین تعداد و سطح برگ، ارتفاع ساقه، وزن خشک برگ و ساقه در تنش خشکی 50‌درصد ظرفیت مزرعه نسبت به شاهد مشاهده شد. با افزایش تنش خشکی طول ریشه افزایش یافت. وزن خشک ساقه، طول ریشه و سطح برگ در تیمار میکوریز و تیمار ترکیبی باکتری و میکوریز نسبت به شاهد بیشتر بود که افزایش طول ریشه نسبت به شاهد تفاوت معنا‏دار داشت. حداقل تعداد برگ، سطح برگ، قطر ساقه، طول ریشه و وزن خشک ساقه در تیمار باکتری نسبت به شاهد مشاهده شد. حجم ریشه و وزن خشک ریشه بیشترین میزان خود را در تیمار باکتری نشان دادند، که نسبت به شاهد اختلاف آن معنا‏دار بود. در‌مجموع تیمار تلفیقی میکوریز و باکتری بیشترین تأثیر را بر افزایش رشد رویشی دانهال‏های پسته بر جای گذاشت و از نظر رطوبتی گیاهان بهترین رشد را در شرایط 50‌درصد ظرفیت مزرعه داشتند.



[1] .Pseudomonas fluorescens


[2] .Biofertilizer

کلیدواژه‌ها


عنوان مقاله [English]

Effect of arbuscular mycorrhizal fungi and Pseudomonas fluorescence on vegetative growth of pistachio seedlings (Pistacia vera cv. Qazvini) under four different irrigation regimes

نویسندگان [English]

  • afsaneh shool 1
  • Mohammad Hossein Shamshiri 2
  • Abdolreza Akhgar 3
  • Majid Esmaeilizadeh 3
1 Former M. Sc. Student, College of Agriculture, University of Vali-e-Asr Rafsanjan, Rafsanjan, Iran
2 Assistant Professor, College of Agriculture, University of Vali-e-Asr Rafsanjan, Rafsanjan, Iran
3 Assistant Professor, College of Agriculture, University of Vali-e-Asr Rafsanjan, Rafsanjan, Iran
چکیده [English]

In order to investigate the symbiotic effect of arbuscular mycorrhizae (Glomus mosseae) and a bacteria (Pseudomonas fluorescence) on vegetative growth of pistachio seedlings (Pistacia vera cv. Qazvini) under drougth stress, a greenhouse experiment was conducted using four drougth stress levels (100% FC as control, 75, 50 and 25% FC) and four levels of biofertilizers (non mycorrhizal and non bacterial plants as control, mycorrhizal treatment, bacterial treatment and a mixed treatment of both). In the experiment, application of bacteria in different drougth stress levels could not affect root colonization with mycorrhizae whereas increase in root colonization percentage was observed along with increase in drougth intensity. The highest values of leaf area and number, stem height and dry weight of leaf and stem were obtained with 50% FC in comparison with control. Root lenght was increased with increase in drougth stress levels. Dry weight of stem, root length and leaf area were more in mycorrhizal and mixed treatments in comparison with control. The least values of leaf area and number, stem diameter, root length and stem dry weight were observed in bacterial treatment in comparison with control. Root volume and dry weight were maximum in bacterial treatment with a significant difference with control. Totally, it can be concluded that the mixed treatment had the most effect on vegetative growth of pistachio seedling under different drougth stress levels and from drought point of view, 50% FC was the best treatment which improved the most vegetative growth parameters.

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