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Polymorphism of Birches in the Southern Trans-Urals
- Authors: Cherepanova O.E.1, Medvedeva S.O.1, Napalkova V.V.1, Petrova I.V.1, Balakhonova V.A.2, Sadov Z.A.2
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Affiliations:
- Botanical Garden of the Ural Branch of RAS
- Kurgan State University
- Issue: Vol 523, No 1 (2025)
- Pages: 397-404
- Section: Articles
- URL: https://medjrf.com/2686-7389/article/view/693497
- DOI: https://doi.org/10.31857/S2686738925040032
- ID: 693497
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Abstract
Leading monographers of the genus Betula, N. N. Tzvelev and G. V. Kulikov, recognize the independence of birch microspecies. In the Southern Trans-Urals, B. krylovii belongs to this group. Most studies of Betula representatives relied on traditional phenotype-based methods, lacking mechanisms to resolve taxonomic challenges in this complex genus. Our study aimed to conduct a comprehensive assessment of genetic and morphological polymorphism in birch populations along the Tobol River in the Southern Trans-Urals. We evaluated: ploidy levels of Betula representatives, variability of chloroplast DNA fragments, morphological structure of leaf blades across 10 birch sampling sites. The study revealed moderate genetic polymorphism and low interpopulation differentiation of B. pendula in the Southern Trans-Urals. Based on the ploidy level data, we showed that the occurrence of B. pubescens within investigated territory is low. According to the results of the complex analysis, the taxa B. pendula and B. krylovii have similar phenotypic features, common chlorotypes, the same ploidy level (2n), therefore, the taxonomic status of B. krylovii requires revision.
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About the authors
O. E. Cherepanova
Botanical Garden of the Ural Branch of RAS
Email: so.medvedeva@gmail.com
Yekaterinburg, Russian Federation
S. O. Medvedeva
Botanical Garden of the Ural Branch of RAS
Email: so.medvedeva@gmail.com
Yekaterinburg, Russian Federation
V. V. Napalkova
Botanical Garden of the Ural Branch of RAS
Email: so.medvedeva@gmail.com
Yekaterinburg, Russian Federation
I. V. Petrova
Botanical Garden of the Ural Branch of RAS
Email: so.medvedeva@gmail.com
Yekaterinburg, Russian Federation
V. A. Balakhonova
Kurgan State University
Email: so.medvedeva@gmail.com
Kurgan, Russian Federation
Z. A. Sadov
Kurgan State University
Author for correspondence.
Email: so.medvedeva@gmail.com
Kurgan, Russian Federation
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