نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت، ایران

2 استاد، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت، ایران

3 استادیار، دانشکده علوم کشاورزی، دانشگاه گیلان، رشت، ایران

چکیده

هدف از این تحقیق بررسی اثر کودهای زیستی و تغذیه از طریق محلول غذایی (هوگلند پایه) بر خصوصیات کمی و کیفی دو رقم بگونیا همیشه‌گلدار (Senator deeprose و Sprint rose) صورت گرفت. آزمایش به‌صورت فاکتوریل در قالب طرح کامل تصادفی در بیست تیمار با سه تکرار انجام شد. تیمارها شامل، محلول غذایی (هوگلند پایه)، سودوموناس (Pseudomonas fluorescens Strain 169)،  ازتوباکتر (Azotobacter chroococcum Strain 12) و تلفیق سودوموناس و ازتوباکتر و غلظت‌های مختلف محلول غذایی و دو رقم بگونیا بودند. عدم استفاده از کود زیستی و محلول غذایی، به‌عنوان شاهد در نظر گرفته شد. نتایج نشان داد که بیشترین سطح برگ (69/36 میلی‌متر مربع) در کاربرد سودوموناس و ازتوباکتر و 75 درصد نیتروژن مشاهده شد. بیشترین وزن تر شاخساره (18/117 گرم) و بیشترین وزن خشک شاخساره (12/4 گرم)، با کاربرد سودوموناس و ازتوباکتر و 75 درصد نیتروژن و فسفر بود. همچنین بیشترین فسفر شاخساره (34/0 درصد) مربوط به تیمار سودوموناس و ازتوباکتر و 100درصد فسفر بود و بیشترین کلروفیل‌های برگ‌ها (12/13 میلی‌گرم ‌درگرم ‌وزن‌تر) مربوط به تیمار ازتوباکتر و 100 درصد نیتروژن بود. تیمار سودوموناس و ازتوباکتر و 75 درصد فسفر با 38/41 میلی‌گرم ‌درگرم ‌وزن‌تر بیشترین میزان آنتوسیانین‌های گلبرگ‌ها را داشت. در مجموع تیمار سودوموناس و ازتوباکتر و 75 درصد نیتروژن و سپس تیمار هوگلند پایه بهترین تیمار بودند. بر این اساس استفاده توأم باکتری سودوموناس و ازتوباکتر به همراه غلظت‌های کمتر عناصر غذایی منجر به بهبود معنی‌دار برخی صفات کمی و کیفی در بگونیا شد. ضمن اینکه دو رقم گل بگونیا Senator deeprose و Sprint rose در پاسخ به تیمارهای مشابه، واکنش متفاوتی از خود نشان دادند.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of nitrogen fixing and phosphorus solubilizing bacteria on quantitative and ‎qualitative characteristics in two varieties of begonia (Begonia semperflorens‏(‏

نویسندگان [English]

  • Fatemeh Khanideh 1
  • Moazzam Hassanpour Asil 2
  • Mohammadreza Ehteshami 3

1 M.Sc. Student, Faculty of Agricultural Sciences, University of Guilan, ‎Rasht, Iran ‎

2 Professor, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran‎

3 Assistant Professor, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran ‎

چکیده [English]

The objective of this study was to investigate the effects of biofertilizers and nutrition through a nutrient solution (base Hogland) on quantitative and qualitative characteristics of Begonia semperflorens (two varieties, sprint rose and senator deeprose). The factorial experiment was carried out based on randomized complete block design (RCBD), with twenty treatments in three replications. Treatments include: nutrient solution (base Hogland), Pseudomonas fluorescens strain 169, Azotobacter chroococcum strain 12 and compound Pseudomonas and Azotobacter with different percentages of chemical fertilizer and two varieties of Begonia. Non-inoculated with nutrient solution and bio-fertilizer were considered as control. The results showed that the highest leaf area (36.69 mm2) was observed in Pseudomonas and Azotobacter and 75% of the nitrogen treatment. Maximum shoots fresh weight (117.18 gr) and maximum shoots dry weight (4.12 gr), were seen at the treatments of Pseudomonas and Azotobacter and 75% of the Nitrogen and Phosphorus. Most phosphorus in shoots (0.34%) was related to the treatments of Pseudomonas and Azotobacter and 100% phosphor and the highest chlorophyll of leaves (13.12 mg per gr of fresh weight) were related to the treatments of Azotobacter and 100% Nitrogen. Treatments of Pseudomonas and Azotobacter and 75% phosphor with 41.38 mg per gr of fresh weight, had the highest amounts of anthocyanins of petals. Overall, treatment of Pseudomonas and Azotobacter and 75% nitrogen, and then base Hogland treatment were the best treatments. Thus, it was shown that Pseudomonas and Azotobacter combination with reduced doses of nutrient solution, led to significant improvement of quantitative and qualitative characteristics of Begonia. In addition, two varieties of Begonia (senator deeprose and sprint rose) in response to similar treatments, showed different reactions.

کلیدواژه‌ها [English]

  • Azotobacter
  • begonia
  • root inoculation
  • Pseudomonas‎
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