Effect of spraying with 5-aminolevulinic acid and nano-zinc oxide on enhancing floral traits of seedlings dwarf pink Bougainvillea ‘Jewel Pink‘

Hussain Khalaf, Bushra Alawi (author), Abdulrazzaq, Zeyad Mohammed (author)

The research sought to examine the impact of foliar application of 5-Aminolevulinic Acid and Nano-Zinc Oxide on mitigating flower drop, prolonging blooming duration of dwarf pink Bougainvillea ‘Jewel Pink’, in addition to promoting growth characteristics. The experiment included administering four doses of 5-ALA and three concentrations of ZnO-NPs at four separate times. A 4 × 3 factorial experiment was conducted using a RCBD. Means were analysed using the LSD0.05. The results demonstrated that the application of 5-ALA 50 mg l-1 and ZnO-NPs 75 mg l-1 to Bougainvillea seedlings significantly improved flowering characteristics, evidenced by an extended flowering duration and decreased flower drop at multiple intervals compared. Furthermore, there were substantial enhancements in vegetative and root development traits; in contrast, the control treatment (0 mg l-1) had the lowest significant values for both growth metrics. The findings indicated that the concurrent application of 50 mg l-1 5-ALA and 75 mg l-1 ZnO-NPs exhibited considerable superiority in most evaluated growth parameters, with the exception of seedling height, branch diameter, and the length of the longest lateral root.

• Language: English
• Keywords: dwarf seedling, 5-aminolevulinic, ZnO-NPs, floral growth
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2026
• Number of pages: 16 str.
• Numbering: Vol. 122, no. 3
• PID: 20.500.12556/RUL-189580
• UDC: 631
• ISSN on article: 1854-1941
• DOI: 10.14720/aas.2026.122.3.29883
• COBISS.SI-ID: 294468611
• Publication date in RUL: 09.10.2026

Record is a part of a journal

• Title: Acta agriculturae Slovenica
• Publisher: Biotehniška fakulteta, Oddelek za agronomijo in Oddelek za zootehniko, Biotehniška fakulteta, Oddelek za agronomijo in Oddelek za zootehniko, Univerza v Ljubljani, Biotehniška fakulteta, Založba Univerze v Ljubljani
• ISSN: 1854-1941
• COBISS.SI-ID: 219581184

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Title: Vpliv škropljenja s 5-aminolevulinsko kislino in nano-cinkovim oksidom na izboljšanje cvetnih lastnosti sadik pritlikave rožnate bugenvilije ‘Jewel Pink’
• Keywords: pritlikava rožnata bugenvilija, okrasne rastline, pritlikave sadike, 5-aminolevulinska kislina, ZnO-NP, razvoj cvetov