تأثیر تلقیح قارچ‌های آربسکولار Glomus fasciculatum وG. mosseae بر رشد، فتوسنتز و جذب برخی عناصر نهال‌های کنار (Ziziphus spina-christi L.)

نوع مقاله: مقاله پژوهشی

نویسنده

هیات علمی دانشگاه ایلام

چکیده

این تحقیق با هدف بررسی تأثیر قارچ‌های میکوریزی (Glomus fasciculatumوG. mosseae و ترکیب دو قارچ) بر رشد، فتوسنتز و جذب عناصر نهال‌های کنار در نهالستان گرمسیری مهران در استان ایلام انجام گرفت. نتایج نشان داد که درصد کلنیزاسیون ریشه در تیمار ترکیبی، بیشتر از تیمار خالص قارچ‌های Glomus fasciculatum وG. mosseae  بود. وزن ‌تر ریشه، هدایت روزنه­ای و کلروفیل a در نهال‌های میکوریزی نیز بیشتر از نهال‌های غیرمیکوریزی کنار بود. همچنین در تیمار ترکیبی و تیمار خالص G. mosseae، قطر یقه، وزن خشک ریشه، نیتروژن اندام هوایی و فسفر ریشه بیشتر از تیمار G. fasciculatum و آن هم بیشتر از شاهد بود. میزان فتوسنتز و تعرق نیز در تیمارهای ترکیبی و تیمار خالص G. fasciculatumاز تیمار خالص G. mosseae و شاهد بیشتر بود. اما از طرفی، قارچ‌های میکوریزی بر ارتفاع نهال (269/0P=)، وزن‌ تر اندام هوایی (479/0P=)، وزن خشک اندام هوایی (697/0P=)، کلروفیل b (097/0P=)، نیتروژن ریشه (307/0P=)، فسفر اندام هوایی (126/0P=) و پتاسیم ریشه (638/0P=) و پتاسیم اندام هوایی (667/0P=) تأثیر معنی‌داری نداشتند. نتایج این تحقیق نشان داد که تیمار ترکیبی به‌دلیل ایجاد همزیستی بیشتر با نهال‌های کنار تأثیر بیشتری بر رشد و فتوسنتز نهال‌ها دارد. 

کلیدواژه‌ها


عنوان مقاله [English]

Effects of Glomus fasciculatum and G. mosseae on growth, photosynthesis and some nutrient absorption of Ziziphus spina-christi L. seedlings

چکیده [English]

The research aims at studying the effects of mycorrhizal fungi (Glomus fasciculatum, G. mosseae and mixed composition) on growth, photosynthesis and nutrient absorption of Ziziphus spina-christi in Mehran greenhouse, Ilam province. The result showed that colonization rate in mixed treatment was more than pure treatment of G. fasciculatum and G. mosseae. Also, root fresh weight, stomatal conductance and chlorophyll a of mycorrhizal seedlings were more than non-mycorrhizal seedlings of Ziziphus spina-christi. The basal diameter, root dry weight, nitrogen content of shoot and phosphorous content of root in mixed and pure treatments of G. mosseae were more than G. fasciculatum and control treatment. Also, the photosynthesis and transpiration in mixed and pure G. fasciculatum were more than G. mosseae and control treatment. Mycorrhizal fungi had not significant effects on height (P = 0.269), shoot fresh weight (P=0.479), shoot dry weight (P = 0.697), chlorophyll b (P = 0.097), nitrogen content of root (P = 0.307), phosphorous content of shoot (P = 0.126), K of shoot (P = 0.667) and root (P = 0.638). The result of this study showed that mixed treatment, due to more colonization rate than other pure fungi, had more effects on growth and photosynthesis of Z. spina-christi.

کلیدواژه‌ها [English]

  • Transpiration
  • Photosynthesis
  • Ziziphus spina-christi
  • Mycorrhiza
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