افزایش جذب عنصرهای غذایی و رنگدانه‌های نورساختی گل حنای گینه‌نو (Impatiens hawkeri) با محلول‌پاشی سیلیسیم در محیط آبکشت

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، دانشکده کشاورزی، دانشگاه شهرکرد،‌ ایران

2 دانشجوی سابق کارشناسی ارشد، دانشکده کشاورزی، دانشگاه شهرکرد،‌ ایران

چکیده

سیلیسیم به‌عنوان یک عنصر سودمند تأثیر چندی بر رشد، عملکرد، بهبود تحمل به تنش­های محیطی و بهبود تعادل عنصرهای غذایی در گیاهان دارد. به همین منظور در تابستان سال 1393 آزمایشی در قالب طرح کامل تصادفی با چهار سطح محلول­پاشی سیلیسیم شامل 0، 40، 80 و 120 میلی­گرم بر لیتر و سه تکرار (هر تکرار شامل پنج گلدان 7/0 لیتری) به مدت دو ماه روی گل حنای گینه‌نو Impatiens hawkeri W. Bull.در شرایط گلخانه اجرا شد. در پایان آزمایش، میزان نیتروژن، فسفر، پتاسیم، کلسیم، منیزیم، سیلیسیم برگ، آنتوسیانین­ها، سبزینه (کلروفیل)­هایa، bو کل اندازه­گیری شدند. نتایج نشان داد، بیشترین نیتروژن بافت (8/2%)، فسفر (41/0%) و پتاسیم (68/2%) مربوط به تیمار سیلیسیم 40 میلی­گرم بر لیتر بود. همچنین، بیشترین میزان کلسیم (75/3%) و منیزیم (81/1%) مربوط به تیمار سیلیسیم 80 میلی­گرم بر لیتر و بیشترین میزان سیلیسیم برگ (6/15 میلی­گرم بر کیلوگرم وزن تر) در تیمار سیلیسیم 120 میلی­گرم بر لیتر مشاهده شد. بیشترین میزان سبزینه­ها (76/20 میلی­گرم بر گرم وزن تر) و آنتوسیانین­های گلبرگ­ها (1/32 میلی­گرم بر گرم وزن تر) در تیمار 120 میلی­گرم بر لیتر سیلیسیم به دست آمد. به‌طورکلی، کاربرد سیلیسیم 120 میلی­گرم بر لیتر باعث بهبود گل حنای گینه‌نو شده و به‌عنوان عنصری سودمند در پرورش این گیاه توصیه می­شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Increasing nutrient elements absorption and photosynthetic pigments by silicon spray in New Guinea impatiens (Impatiens hawkeri) in soilless conditions

نویسندگان [English]

  • Saeed Reezi 1
  • Leila Mohammadi 2
  • Rahim Barzegar 1
1 Assistant Professor, Faculty of Agriculture, Shahrekord University, Iran
2 Former M. Sc. Student, Faculty of Agriculture, Shahrekord University, Iran
چکیده [English]

Silicon as a beneficialelement has several effects on growth, yield, abiotic stresses tolerance and nutrient element balance in plants. For this purpose, an experiment established in Complete Randomized Design with four levels of silicon foliar spray (0, 40, 80 and 120 mg.L-1) with three replications (each replication contained five 0.7 liter pots) on Impatiens hawkeri in greenhouse conditions during 2 months in summer 2015. Different traits such as nitrogen, phosphorous, calcium, magnesium and leaf silicon content, anthocyanin, a, b and total chlorophyll contents were measured. Results showed that the most N (2.8%), P (0.41 %) and K (2.68 %) contents were related to 40 mg.L-1 of silicon treatment. However, the most Ca (3.75 %) and Mg (1.81 %) contents obtained in 80 mg.L-1 silicon treatment, but the most Si content (15.6 mg/kgfw) obtained in 120 mg.L-1 treatment. Total chlorophyll (20.76 mg/kgfw) and petal anthocyanin content (32.1 mg/kgfw) was the highest in 120 mg.L-1 Si treatment. Generally, Si can be suggested as a beneficial element (120 mg.L-1 ) for New Guinea Impateins.

کلیدواژه‌ها [English]

  • Anthocyanin Petal
  • Chlorophyll
  • nitrogen
  • potassium
  • Silicon
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