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BIOECOLOGICAL CHARACTERISTICS OF MEDICINAL DANDELION
(TARAXACUM OFFICINALE (L.) WEBER EX F.H. WIGG) IN THE FERGANA
VALLEY
Mahmudov Valijon
PhD in Biology, Associate Professor, Fergana State University
Email: valijonmakh@gmail.com | Tel: +998 90 550 01 46
Yoqubova Gulchehra Jo‘rabek kizi
Master’s Student, Fergana State University
Email: yoqubovagulchehra288@gmail.com | Tel: +998 90 013 15 50
Abstract:
This article provides a comprehensive description of the bioecological characteristics
of the medicinal plant
Taraxacum officinale
(L.) Weber ex F.H. Wigg in the Fergana Valley. It
highlights the species’ natural distribution, its level of adaptation to environmental factors, and
its phenological phases.
Keywords:
ecological factors, population, agroecosystems, biologically active substances,
phenological phases, polymorphic species, apomictic forms, antibacterial, antioxidant,
polysaccharides, immunomodulator, large-scale plantations.
Introduction
The significance of this study lies in the fact that medicinal plants have long been used as the
most effective natural remedies by humanity. In the modern era, the exploration of their survival
strategies, responses to various ecological factors, and the synthesis of biologically active
compounds represent a key direction in bioecological research.
Global climate change, increasing anthropogenic pressures, and the intensification of
agrotechnical practices have led to the decline of many medicinal plant populations. This, in turn,
affects their bioecological characteristics significantly.
A review of the literature reveals that while there is extensive information on the medicinal and
therapeutic properties of
Taraxacum officinale
[1,2,3], studies focusing on its bioecological
characteristics and its significance as an ecological and natural resource remain limited [4,5].
Materials and Methods
The object of this research is the perennial herbaceous plant
Taraxacum officinale
(L.) Weber ex
F.H. Wigg. Its bioecology was studied through field observations and analysis of phenological
stages, using the method proposed by I.N. Beydeman [6].
Results and Discussion
Taraxacum officinale
is a polymorphic species with apomictic forms. Some researchers even
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consider these forms as separate species. In Uzbekistan, the species is found in almost all regions
except high mountain and desert zones. It commonly grows in disturbed plant communities,
grassy soils, especially near residential areas, fields, abandoned lands, along roadsides, irrigation
channels, erosion-prone slopes, and sometimes in forests and shrublands [7].
In the Fergana Valley,
Taraxacum officinale
demonstrates high adaptability even in saline,
marshy, and partially rocky areas, as well as on the edges of irrigated cotton fields. Observations
conducted by the Botanical Garden of the Academy of Sciences of Uzbekistan in 2021 showed
that this plant thrives in soils with pH levels ranging from 7.2 to 8.1 [4].
The content of biologically active substances in
Taraxacum officinale
samples grown in the
Fergana Valley was found to be 1.4 times higher than those from Andijan district. This indicates
that microclimatic factors such as temperature and humidity significantly influence the synthesis
of secondary metabolites [5].
The vegetation period of the species in the Fergana Valley begins in late March and lasts until
the first decade of October. The plant undergoes four main phenophases: vegetative growth,
budding, flowering, and seed formation. The highest accumulation of flavonoids occurs within
ten days after the flowering phase.
In the Fergana Valley, dense populations of
Taraxacum officinale
are predominantly found in
areas near water sources in Besharik, Rishton, Kokand, and the outskirts of Fergana city.
Moderate humidity during spring and summer in these regions creates optimal growing
conditions. Especially in iron- and calcium-rich soils, the flavonoid content increases, enhancing
the plant's medicinal value.
Some studies also consider
Taraxacum officinale
as a stabilizing element in agroecosystems.
However, when its density exceeds a certain threshold, it can negatively impact the growth of
crops such as cotton, alfalfa, and vegetables.
This species is a bioactive plant widely used in folk medicine. Its chemical composition—
including tannins, polysaccharides, vitamins, and essential oils—serves as a source of various
biological activities. Modern medical studies have confirmed its anti-inflammatory, antibacterial,
antioxidant, hemostatic, and immunomodulatory properties. In autumn, the roots of
Taraxacum
officinale
are especially rich in inulin [3]. The plant's roots are included in stomach and diuretic
herbal mixtures, and its concentrated extracts are used in tablet formulation.
Conclusion
In conclusion,
Taraxacum officinale
is well adapted to the ecological conditions of Besharik and
Kuva districts in the Fergana Valley, especially thriving in sunny and dry areas. Samples
collected from urban and suburban areas contain relatively lower levels of medicinal compounds.
Therefore, organizing special plantations in the foothill zones of the Fergana Valley for raw
material collection represents a promising direction.
References
1.
Akopov I.E. (1990). Medicinal Plants and Their Use. Tashkent: Medicina. 445 p.
2.
Khozhimatov O.K. (2021). Medicinal Plants of Uzbekistan. Tashkent: “Manaviyat”. 328
p.
3.
Ibn Sina (Avicenna). (2003). Medicinal Plant Remedies. Edited by Sh.B. Irgashov.
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Tashkent: Abu Ali ibn Sina. 457 p.
4.
Mamatqulov O.M. (2022). "Bioecology of Medicinal Plants of Uzbekistan". TDIU
Publishing. pp. 112–115.
5.
Hasanov B. (2020). "Chemical Analysis of Some Medicinal Plants in the Fergana Valley".
Journal of Botany. pp. 45–49.
6.
Beydeman I.N. (1974). Methodology for Studying Plant Phenology and Communities.
Novosibirsk: Nauka. 189 p.
7.
Mahmudov V., Mahmudov A.V. (2022). Flora and Systematics of Medicinal Plants.
Tashkent: “Fon”. 376 p.
