اثر تیامین، اسید آسکوربیک و اسید جیبرلیک، بر برخی شاخص های رشد، میزان رنگیزه‌ها و قند احیاء در گل اطلسی

علوم باغبانی

مقاله 2، دوره 30، شماره 1، اردیبهشت 1395، صفحه 141-150   

نوع مقاله: مقالات پژوهشی

شناسه دیجیتال (DOI): 10.22067/jhorts4.v30i1.42153

نویسندگان

مسلم صالحی^* ؛ وحیدرضا صفاری؛ شیما حسن زاده فرد

دانشگاه شهید باهنر کرمان

چکیده

گیاهان بستر ساز از جمله اطلسی با توجه به تنوع عادت رشد و رنگ از عناصر بسیار مهم فضای سبز در شهرها به شمار رفته و بسیار مورد توجه طراحان فضای سبز قرار گرفته است. این پژوهش روی گل اطلسی با هدف افزایش شاخص های رشد (طول شاخه جانبی، طول ریشه، قطر ساقه، قطر گل، تعداد گل، تعداد شاخه جانبی) و صفات بیو شیمیایی (کلروفیل a، کلروفیل b، کلروفیل کل، کارتنوئید، قند احیا)، در قالب آزمایش فاکتوریل بر پایه طرح کاملاً تصادفی با 5 تکرار اجرا گردید. فاکتورها بر این اساس که دو ویتامین و یک تنظیم کننده رشد (اسید آسکوربیک، تیامین و اسید جیبرلیک هر سه با غلظت صفر و 100 میلی‌گرم در لیتر) مورد استفاده قرار گرفت. بر اساس نتایج حاصل، GA3 نسبت به دو ویتامین کاربردی تاثیر قابل توجهی بر کلیه شاخص های اندازه‌گیری شده به جز کارتنوئید داشت و همچنین اثرهای ترکیبی GA3 و اسید آسکوربیک بر شاخص های مرتبط با رشد ساقه‌ها، ریشه و قطر گل و ترکیب GA3 و تیامین بر رنگیزه‌ها، میزان قند، کارتنوئید و تعداد گل در میان تیمارهای دو گانه قابل توجه بود. در کلیه شاخص‌های اندازه‌گیری شده در این پژوهش، اثرهای متقابل دو گانه و سه گانه معنی‌دار شد و در نهایت ترکیب توام هر سه ماده کاربردی (اسید آسکوربیک، تیامین و اسید جیبرلیک هر سه با غلظت 100 میلی‌گرم در لیتر) موجب افزایش قابل توجه شاخص‌های مرتبط با رشد و نمو ریشه و ساقه‌ها، تعداد و قطر گل، رنگیزه‌ها و قند احیاء نسبت به شاهد و دیگر تیمارها شد و به عنوان بهترین تیمار، پیشنهاد گردید.

کلیدواژه‌ها

تنظیم کننده رشد؛ کارتنوئید؛ گلدهی؛ ویتامین

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