Page 72 - Book of Abstracts

5 International Scientific Online Conference DOI: https://doi.org/10.15414/2021.9788055224015

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ROSE PRODUCTIVITY IN GREENHOUSE CONDITIONS OF THE CENTRAL BOTANICAL
GARDEN OF THE NATIONAL ACADEMY OF SCIENCES OF BELARUS
Iryna Kabusheva, Natallia Sak
Central Botanical Garden of the National Academy of Sciences of Belarus,
Minsk, Belarus; E-mail.: I.Kabusheva@cbg.org.by
Currently, the rose is one of the leading cut crops in the industrial floriculture of Belarus.
Among the wide diversity of rose cultivars created to date by breeders, it is necessary to select
the most highly productive ones of an intensive type suitable for year-round cultivation.
The purpose of the study is to identify the most productive and high-quality flower-cut
rose cultivars in greenhouses based on the investigation of morphological characteristics.
The objects of the research were three-year-old plants of the following hybrid tea rose
cultivars: Anastasia, Avalanche, Jumilia, Red Naomi, Kimberly, and Talea. Test plots were laid in
the second decade of January 2021 in the greenhouse of the Central Botanical Gardens of the
National Academy of Sciences of Belarus planting 610 specimens on an area of 73 m with a
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planting density of 8.36 plant/m . The following temperature and light conditions were
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observed. The air temperature was +8 °C during the laying of the experimental plots and then
it was weekly increased by 2 °C, up to +20 °C. Additional illumination with LEDs was used in the
period 15.02.2021–15.04.2021 gradually increasing the intensity from 50 to 100 % and
additional illumination time from 12.5 h to 14.5 h. Morphological observations and accounting
of cut flower yield were carried out on the 90th day of planting. The quality of cut flowers was
determined according to GOST 18908.1-2019. Our studies have shown that the period from
planting to flowering was 68-84 days for different rose cultivars: Jumilia – 68 days, Anastasia
and Kimberly – 73 days, Avalanche and Talea – 74 days, and Red Naomi – 84 days. The number
of stems on a plant ranged from 2.4 to 7.4 in different cultivars. The stem length reached an
average of 22.6–45.5 cm. The most powerful plants were observed in 'Red Naomi' with 6.0
stems per plant and stem length is on average 37.8 cm. 'Kimberly' and 'Talea' tended to form a
rather large number of stems (5.6 and 7.4 respectively) with a small stem length (only 24.9 cm
and 22.6 cm respectively). The cut flowers obtained from the first wave of flowering satisfied in
quality to the first ('Red Naomi', 'Avalanche', 'Anastasia') and second grade ('Talea', 'Jumilia',
'Kimberly') according to the received morphological data. The average yield was 2.3–3.8 flowers
per plant or 19.2–31.3 flowers/m in cultivated rose cultivars. 'Kimberly' (31.3 flowers/m ),
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'Red Naomi' (22.4 flowers/m ), 'Jumilia' (21.3 flowers/m ) and 'Talea' (20.7 flowers/m ) were
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the most productive, and ‘Red Naomi’ were the best considering the quality of the obtained
flower cut.
Consequently, the initial tests of six rose cultivars in greenhouse conditions of the Central
Botanical Gardens of the National Academy of Sciences of Belarus revealed the most productive
‘Red Naomi’ which can be recommended for obtaining import-substituting cut flowers.

Keywords: rose cultivars, cut flowers, yield, greenhouse.

5 International Scientific Conference Agrobiodiversity for Improving the Nutrition, Health, Quality of Life and |71
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Spiritual Human Development
November 3 2021
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