Page 111 - Book of Abstracts

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

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PAULOWNIA TOMENTOSA (THUNB.) STEUD. AS PERSPECTIVE ENERGETIC PLANT IN
UKRAINE
Dzhamal Rakhmetov, Olena Vergun, Valentyna Fishchenko, Svitlana Rakhmetova
M.M. Gryshko National Botanical Garden of the National Academy of Sciences of Ukraine,
Kyiv, Ukraine; E-mail.: olenavergun8003@gmail.com

Plants of Paulownia tomentosa (Thunb.) Steud. have had a scientific interest for the last
decades and they are known as ornamental and medicinal cultures. Leaves, wood, and fruits
are used in traditional Chinese medicine for the treatment of tonsillitis, bronchitis, asthmatic
attack, etc. It was detected pharmacological activity of P. tomentosa such as anti-inflammatory,
antispasmodic, antioxidant, vasorelaxant. But the most interesting last time connecting with
energetic properties. Bioenergetic plants have interest due to their ability to produce a large
amount of lignocellulosic biomass. P. tomentosa is one of the fast-growing wood species in some
countries. Stem, branch, bark, leaves, and roots had a high heating value. Bioenergy
characteristics of this plant depending on investigated plant part. Paulownia is a tree species
distributed nowadays in more than 40 countries, very adaptable, and extremely fast-growing.
This study was aimed to demonstrate the energetic potential of P. tomentosa plants. The
research used genotypes of P. tomentosa from the collection of M.M. National Botanical Garden
of the NAS of Ukraine (NBG) in 2018–2019: f. PB, f. PO, f. PO (1 year), and cultivar sample. The
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content of dry matter was determined by drying raw to constant weight at 105 ℃. The content
of ash was detected by combustion at 800 ℃ in the muffle oven. The heating value was
measured on calorimeter IKA C-200.
Plants of this genus were introduced from North America to Europe and Asia in the second
part of the 19 century. In the NBG P. tomentosa has been studied since 2011 and is concerning
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with high productivity energetic plants (Rakhmetova et al., 2021). Results showed that the
content of ash was from 1.05 to 2.27 %, dry matter was from 64.38 to 92.96 %, and heating
value from 15.99 to 16.62 MJ/kg depending on genotypes. Also, we found a very strong
correlation between investigated parameters: dry matter and ash (r = 0.982), heating value and
dry matter (r = 0.945), and ash and heating value (r = 0.877).
Primary investigations showed that P. tomentosa is a promising energetic plant in
Ukraine. These plants can compete with other tree and herbaceous plant species well-known
in the world. By the way, the Ukrainian state register of varieties included cultivars of the
energetic plant species from genera Salix, Miscanthus, Panicum, etc., some of which were
created in NBG. Also, it is necessary to conduct selective work with these plants considering
their biological, ecological, and biochemical properties to create new forms with stress
tolerance in different growing conditions.

Keywords: Paulownia, use, energetic plant.

5 International Scientific Conference Agrobiodiversity for Improving the Nutrition, Health, Quality of Life and |110
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Spiritual Human Development
November 3 2021
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