The Effects of Nitrogen Fertilizer Sources on Yield and some Quality Attributes of Chrysanthemum morifolium L.

محورهای موضوعی : مجله گیاهان زینتی

Lamia Vojodi Mehrabani ¹ (Department of Agronomy and Plant Breading, Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran)

تاریخ دریافت : 1395/11/28 تاریخ پذیرش : 1396/06/25 تاریخ انتشار : 1396/09/10

کلید واژه: Urea, Phenolic, Nitroxin, Anthocyanin, &lt, i&gt, Chrysanthemum morifolium&lt, /i&gt, ,

چکیده مقاله :

Nitrogen is a crucial nutrient affecting plant growth and development and its addition to the soil (as chemical or organic form) influences plant growth characteristics. One experiment was conducted as a factorial based on RCBD with two Chrysanthemum cultivars (‘Fred’ and ‘Angel’( and two N-fertilizer sources [Urea (750 and 1500 g/ha and Nitroxin 7.5 and 15 L/ha] used as fertigation method beside control treatment with three replications. The results revealed that the greatest petals carotenoids content was belonged to 15 liter/ha Nitroxin and the least data for total phenolics was recorded in the control treatment with ‘Angel’. Urea at 1500 g/ ha increased the total phenolics content. The high chlorophyll a content was obtained with Nitroxin (15 L/ ha) with ‘Fred’ and Urea (1500 g /ha) with ‘Angel’. The least chlorophyll b content was recorded with 1500 g / ha Urea at ‘Angel’. Roots dry weight (15 L/ha Nitroxn), stem dry weight (15 L Nitroxin and 1500 g /ha Urea) were positively affected in ‘Fred’. Fertilizers application positively affected root fresh weight in both cultivars. The highest content of anthocyanin (19.3 µmol g-1 FWt) was recorded in ‘Angel’ cultivar. Anthocyanin content was also influenced by 1500 g / ha Urea (19.2 µmol g-1 FWt) and 15 L/ha Nitroxin (18.4 µmol g-1 FWt). The highest amount of shoot number (12.6) was recorded in ‘Fred’ cultivar. With any increase in the fertilizer levels, flowers fresh weight and shoot numbers were significantly increased.

چکیده انگلیسی:

به منظور بررسی تاثیر کود نیتروژنه بر رشد گیاه، آزمایش فاکتوریل بر پایه طرح بلوک های کامل تصادفی شامل دو رقم داودی (’فرد‘ و ’آنجل‘) و دو منبع کودی: اوره (750 و 1500 گرم بر هکتار) و نیتروکسین (75/0 و 5/1 لیتر بر هکتار) به همراه تیمار شاهد در سه تکرار اجرا شد. نتایج نشان داد که بیشترین میزان کاروتنوئید گلبرگ و وزن خشک ریشه در تیمار 5/1 لیتر نیتروکسین و کمترین میزان فنل کل در تیمار شاهد در رقم ’آنجل‘ مشاهده شد. بالاترین میزان کلروفیل a  در تیمارهای  نیتروکسین (5/1 لیتر) در رقم ’فرد‘ و اوره (1500 گرم بر هکتار) در رقم ’آنجل‘ مشاهده شد. کمترین میزان کلروفیل b در تیمار 1500 گرم بر هکتار اوره در رقم ’آنجل‘ مشاهده شد. افزایش در وزن خشک ساقه (5/1 لیتر نیتروکسین و 1500 گرم بر هکتار اوره) در رقم ’فرد‘ مشاهده شد. بیشترین میزان آنتوسیانین (3/19 میکرومول بر گرم وزن تر) در رقم (آنجل) ثبت شد. محتوای آنتوسیانین همچنین تحت تاثیر  و تیمار کودی (1500 گرم بر هکتار و اوره (2/19 میکرومول بر گرم وزن تر ) و 15 لیتر در هکتار نیتروکسین (4/18 میکرومول بر گرم وزن­تر) تاثیر معنی داری در محتوای آنتوسیانین نمونه‌ها داشت. با افزایش میزان کود در هر دو منبع کودی افزایش در وزن تر گل، وزن تر ریشه و تعداد شاخه مشاهده شد.

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