نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد - ایران

2 استادیار، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد – ایران

3 استادیار، گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد - ایران

چکیده

به منظور بررسی تأثیر قارچ میکوریزا (Glomus mosseae) تحت تنش شوری بر ویژگی­های فیزیولوژیکی و میزان جذب برخی عناصر غذایی در گل حنای گینه نو (Impatiens hawkeri)، آزمایشی به صورت فاکتوریل در قالب طرح کاملاً تصادفی، در محیط گلخانه در سه تکرار که هر تکرار شامل سه گلدان بود، در دانشگاه شهرکرد در سال 1393 اجرا گردید. تیمارهای آزمایشی شامل سه سطح قارچ میکوریزای همزیست (صفر، 8 و 16 درصد حجمی) و کلریدسدیم با سه سطح (صفر، 15 و 30 میلی­مولار) بودند. بستر کشت شامل 50 درصد پیت ماس، 40 درصد پرلیت و 10 درصد پوسته برنج (به صورت حجمی) بود. در زمان انتقال نشاها، قارچ میکوریزا با بستر ترکیب شد و پس از استقرار نشاها تیمار شوری از طریق آب آبیاری اعمال شد. صفات مورد ارزیابی شامل میزان نیتروژن، فسفر، پتاسیم، سدیم، پرولین، وزن تازه و خشک ریشه و درصد کلونی­سازی ریشه بود. تیمار میکوریزای 16 درصد بر نیتروژن (31/2 درصد) و فسفر (339/0 درصد) و اثر متقابل آن با شوری 30 میلی­مولار بر میزان پرولین (754/0 میکرومول بر گرم وزن تر) و درصد کلونی‌سازی ریشه (35 درصد) تأثیر معنی­داری داشته است. براساس نتایج ﺗﺤﻘﯿﻖ حاضر، اﺧﺘﻼف ﺑﯿﻦ گیاهان تیمار شده با ﻣﯿﮑﻮرﯾﺰا و سایر تیمارها در بسیاری از ﺻﻔﺎت ﻧﻤﺎﯾﺎن اﺳﺖ و به نظر می­رسد که کاربرد ﻗﺎرچ ﻣﯿﮑﻮرﯾﺰا در بستر کاشت می­تواند سبب افزایش ﺗﺤﻤﻞ در ﺑﺮاﺑﺮ ﺷﻮری از طریق تأثیر بر برخی ویژگی­های فیزیولوژیکی در گل حنای گینه نو شود.

کلیدواژه‌ها

عنوان مقاله [English]

Application of mycorrhizal fungi (Glomus mosseae) on reducing of salinity effect in New Guinea impatiens

نویسندگان [English]

  • Leila Mohammadi 1
  • Saeed Rizi 2
  • Rahim Barzegar 3

1 M.Sc. Student, Department of Horticulture, Faculty of Agriculture, Shahrekord University, Shahrekord - Iran

2 Assistant Professor, Department of Horticulture, Faculty of Agriculture, Shahrekord University, Shahrekord - Iran

3 Assistant Professor, Department of Horticulture, Faculty of Agriculture, Shahrekord University, Shahrekord - Iran

چکیده [English]

To evaluate the effect of arbuscular mycorrhiza (Glomus mosseae) under salt stress on physiological and some nutrient absorption in New Guinea Impatiens (Impatiens hawkeri), an experiment established in complete random design with three replications (three pots for each replication) in greenhouse in Shahrekord University in 2014. Treatments were inoculation of substrate with three levels of arbuscular mycorrhiza (0, 8 and 16 percent, v/v) and sodium chloride (0, 15 and 30 Mm). The substrate medium was included 50 percecnt of peat moss, 40 percent of perlite and 10 percent of rice husk (v/v). The mycorrhizal inoculation done with transplanting and salt stress treatment was applied with irrigation water after stablishment of transplants. Some traits such as nitrogen, phosphorous, potassium, sodium and proline content, dry and fresh root weight and root colonization percentage were evaluated. The results showed that 16 percent of mycorrhiza treatment had significant effect on nitrogen (2.31 percent) and phosphorous (0.339 percent) and it’s interaction with 30 Mm of salt stress had significant effect on proline content (0.754 micromol/gfw) and root colonization (35 percent) percentage. Based on this research the difference between mycorrhiza treated plants and other treatments was significant and it seems that the application of mycorrhiza in medium, can increase salt tolerance in New Guinea Impatiens by effect on some physiological traits.

کلیدواژه‌ها [English]

  • nitrogen
  • proline
  • Phosphorous
  • root fresh weight
  • Sodium Chloride
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