Scientific Reports of the National University of Life and Environmental Sciences of Ukraine

The effect of growth regulators on the morphological and anatomical characteristics and yield of the tea-hybrid rose variety ‘Aqua’

Ivanna Havrys, Vira Kutovenko, Oksana Muliarchuk, Olena Voitsekhivska, Viktoriia Belava
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Abstract

Roses occupy a leading position among cut flowers, and the use of growth regulators activates metabolism, increases plant resistance, yield and decorative qualities of flowers. The aim was to determine the effect of various growth regulators on the development, yield formation and decorative parameters of the ‘Aqua’ rose variety under conditions of low-volume hydroponics in Venlo-type glass greenhouses. Kendal+, Ferti Set, Regoplant, Isabion, Gilea and Yara Vita preparations were used for the tests. The object of the study was the ‘Aqua’ hybrid tea rose, originally bred by the Dutch breeding company Sint Petrus Johannes Schreurs. The experiment was carried out under production conditions at the LLC ‘Askania-Flora’ greenhouse farm in 2023. Three foliar treatments of plants with growth-regulating substances were carried out: the first – a week after planting them in a permanent place in the greenhouse, the second – during the first budding, the third – at the beginning of mass flowering. The control variant was not sprayed with growth regulators. The research showed that the preparations Gilea and Isabion accelerated the formation of flower stalks and the timing of bending, as well as promoted faster budding and flower development. It was found that the use of Isabion increased the yield of the ‘Aqua’ rose variety to 267 pieces/m² (38.1 pieces/plant), which was 11% higher than the control (241 pieces/m²). Under the action of Gilea, the vase life of cut flowers reached 15 days compared to 10 days in the control. It was found that under the action of Yara Vita, the yield reached 259 pcs/m² (37.0 pcs/plant), which exceeded the control by 8%. A positive effect of the growth regulators Yara Vita, Gilea and Isabion on rose productivity, overall yield and the main decorative indicators of the flower was found. The results obtained should be taken into account when planting rose seedlings in Venlo-type glass winter greenhouses for better regulation of growth processes and increased overall yield

Keywords

stimulating effect, greenhouse, plant growth regulators, bud height, productivity

Suggested citation
Havrys, I., Kutovenko, V., Muliarchuk, О., Voitsekhivska, O., & Belava, V. (2025). The effect of growth regulators on the morphological and anatomical characteristics and yield of the tea-hybrid rose variety ‘Aqua’. Scientific Reports of the National University of Life and Environmental Sciences of Ukraine, 21(6),66-78. https://doi.org/10.31548/dopovidi/6.2025.66
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