Effect of Hydrogen Peroxide, Ascorbic Acid and Indolic-3-Butyric Acid on Root Induction and Development in Cuttings of Bougainvillea spectabilis

محورهای موضوعی : مجله گیاهان زینتی

Mehdi Pirdastan ¹ , Abdolhossein Aboutalebi Jahromi ² , Hamed Hassanzadeh Khankahdani ³

1 - Former M.Sc Student, Horticulture, Jahrom Branch, Islamic Azad University, Jahrom, Iran
2 - Associate Professor of Horticulture, Jahrom Branch, Islamic Azad University, Jahrom, Iran
3 - Researcher of Horticulture Crops Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Bandar Abbas, Iran

تاریخ دریافت : 1399/02/19 تاریخ پذیرش : 1399/06/05 تاریخ انتشار : 1399/06/11

کلید واژه: Rooting, IBA, vitamin C, H2O2, Long-term and quick dipping,

چکیده مقاله :

Bougainvillea (Bougainvilleaspectabilis) is used for planting in the landscape because of their beautiful and colorful flowers. The easiest and cheapest technique to propagate this plant is by cuttings; however the cuttings of this plant are not easily rooted and require the special treatments, including the use of auxin. For this purpose, an experiment was performed in Completely Randomized Design with 15 treatments and four replications and the characteristics such as root and shoot length, root and shoot number, root fresh and dry weight, and the rooted cuttings percent were evaluated. The results showed a statistically significant difference among the used treatments. The use of 400 mg/L indolic-3-butyric acid (IBA) for 24 hrs dipping led to improve rooting parameters particularly the rooted cuttings percent. However, the use of 1000 mg/L IBA for 20 s quick dipping also had satisfactory results, which can be introduced as a suitable treatment due to the reduction of application time and labor costs. Adding substances similar to ascorbic acid (AsAc) and hydrogen peroxide (H2O2) also improved some traits such as the root length, root fresh weight and the number of shoots. In general, the use of high concentrations of IBA (2000 mg/L), which are used by quick dipping with the use of pre-treatment with AsAc and H2O2 can lead to improve rooting traits in bougainvillea cuttings. When the cost of the plant growth regulators is important, the use of the low-concentration of IBA (400 mg/L) by long-term dipping (24 hrs) can be effective for Bougainvillea cuttings.

چکیده انگلیسی:

گل کاغذی (Bougainvilleaspectabilis) به‌دلیل داشتند گل‌های زیبا و رنگارنگ برای کاشت در فضای سبز مورد استفاده قرار می‌گیرد. راحت‌ترین و ارزان‌ترین روش تکثیر این گیاه از طریق قلمه است. ولی قلمه‌های این گیاه به‌راحتی ریشه‌دار نشده و نیاز به تیمارهای خاصی از جمله استفاده از اکسین دارند. بدین‌منظور آزمایشی در قالب طرح کاملاً تصادفی با 15 تیمار و چهار تکرار انجام و صفاتی از قبیل طول ریشه و شاخه، تعداد ریشه و شاخه، وزن تر و خشک ریشه و درصد قلمه‌های ریشه‌دار مورد ارزیابی قرار گرفت. نتایج نشان داد که اختلاف آماری معنی‌داری بین تیمارها وجود دارد. استفاده از 400 میلی‌گرم در لیتر IBA با فروبری 24 ساعت، منجر به بهبود پارامترهای ریشه‌زایی به‌ویژه درصد قلمه‌های ریشه‌دار شد. با این حال، استفاده از 1000 میلی‌گرم در لیتر IBA با فروبری سریع 20 ثانیه نیز نتایج رضایت­بخشی داشت که می‌تواند به‌عنوان یک تیمار مناسب جهت کاهش زمان کاربرد و هزینه‌های کارگری معرفی شود. افزودن موادی نظیر آسکوربیک‌اسید و پراکسید هیدروژن (آب‌اکسیژنه) نیز برخی از صفات نظیر طول ریشه، وزن تر ریشه و تعداد شاخه را افزایش داد. به‌طور کلی، استفاده از غلظت‌های زیاد IBA (2000 میلی‌گرم در لیتر) به‌صورت فروبری سریع همراه با پیش تیمار قلمه با اسکوربیک‌اسید و پراکسید هیدروژن می‌تواند منجر به بهبود صفات ریشه‌زایی در قلمه‌های گل کاغذی شود. زمانی که هزینه تنظیم‌کننده‌های رشد گیاهی اهمیت داشته باشد، استفاده از غلظت‌های کم IBA (400 میلی‌گرم در لیتر) با زمان فروبری طولانی (24 ساعت) می‌تواند برای قلمه‌های گل کاغذی موثر باشد.

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