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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vestib</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной  академии наук Беларуси. Серия биологических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Biological Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1029-8940</issn><issn pub-type="epub">2524-230X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1029-8940-2024-69-4-329-339</article-id><article-id custom-type="elpub" pub-id-type="custom">vestib-944</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Природоохранное значение генетической структуры регрессивных популяций Lobelia dortmanna L. в Беларуси</article-title><trans-title-group xml:lang="en"><trans-title>Conservation significance of the genetic structure of regressive populations of Lobelia dortmanna L. in Belarus</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мялик</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Mialik</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мялик Александр Николаевич – канд. биол. наук, заведующий сектором.</p><p>Ул. Сурганова, 2в, 220012, Минск</p></bio><bio xml:lang="en"><p>Aliaksandr M. Mialik – Ph. D. (Biol.), Head of the Sector.</p><p>2v, Surganov St., 220012, Minsk</p></bio><email xlink:type="simple">aleksandr-myalik@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гудная</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Hudnaya</surname><given-names>N. U.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гудная Наталья Владимировна – науч. сотрудник.</p><p>Ул. Сурганова, 2в, 220012, Минск</p></bio><bio xml:lang="en"><p>Natallia U. Hudnaya – Researcher.</p><p>2v, Surganov St., 220012, Minsk</p></bio><email xlink:type="simple">N.Samakhvalava@cbg.org.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кулагина</surname><given-names>Т. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulahina</surname><given-names>T. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кулагина Татьяна Геннадьевна – науч. сотрудник.</p><p>Ул. Сурганова, 2в, 220012, Минск</p></bio><bio xml:lang="en"><p>Tatsiana G. Kulahina – Researcher.</p><p>2v, Surganov St., 220012, Minsk</p></bio><email xlink:type="simple">T.Shlapakova@cbg.org.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дубарь</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dubar</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дубарь Даниил Александрович – науч. сотрудник.</p><p>Ул. Сурганова, 2в, 220012, Минск</p></bio><bio xml:lang="en"><p>Daniil A. Dubar – Researcher.</p><p>2v, Surganov St., 220012, Minsk</p></bio><email xlink:type="simple">d.dubar@tut.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Титок</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Titok</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Титок Владимир Владимирович − член-корреспондент, д-р биол. наук, доцент, гл. науч. сотрудник.</p><p>Ул. Сурганова, 2в, 220012, Минск</p></bio><bio xml:lang="en"><p>Vladimir V. Titok − Corresponding Member, D. Sc. (Biol.), Associate Professor, Chief Researcher.</p><p>2v, Surganov St., 220012, Minsk</p></bio><email xlink:type="simple">V.Titok@cbg.org.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Центральный ботанический сад НАН Беларуси</institution></aff><aff xml:lang="en"><institution>Central Botanical Garden of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>06</day><month>11</month><year>2024</year></pub-date><volume>69</volume><issue>4</issue><fpage>329</fpage><lpage>339</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мялик А.Н., Гудная Н.В., Кулагина Т.Г., Дубарь Д.А., Титок В.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Мялик А.Н., Гудная Н.В., Кулагина Т.Г., Дубарь Д.А., Титок В.В.</copyright-holder><copyright-holder xml:lang="en">Mialik A.M., Hudnaya N.U., Kulahina T.G., Dubar D.A., Titok V.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestibio.belnauka.by/jour/article/view/944">https://vestibio.belnauka.by/jour/article/view/944</self-uri><abstract><p>В статье представлен анализ генетического разнообразия популяций Lobelia dortmanna L. (лобелии Дортманна), выполненный с помощью молекулярных iPBS-маркеров. Изучены все известные в Беларуси популяции из озер Белое (Лунинецкий р-н), Свитязь (Новогрудский р-н), Белянец и Бредно (Россонский р-н), расположенные в островных локалитетах вдали от юго-восточной границы ареала. Показано, что наибольшее генетическое разнообразие Нея характерно для популяции оз. Белянец (0,15), наименьшее ‒ для популяции оз. Бредно (0,10). Для данного вида не выявлено взаимосвязи между положением популяции в пределах ареала, ее численностью, жизненностью растений и уровнем генетического разнообразия. Для белорусских популяций Lobelia dortmanna L. установлено преобладание межпопуляционной изменчивости (54 %) над внутрипопуляционной (46 %), что указывает на высокий уровень их генетической дифференциации. Поток генов для популяций исследуемого вида равен 0,35, что подтверждает низкий уровень обмена генами между популяциями и согласуется с крайне низкой численностью вида на территории Беларуси, а также с изолированностью популяций как от основного фрагмента ареала вида, так и между собой.</p><p>Данные кластерного анализа популяций Lobelia dortmanna L. показывают их разделение на две генетически разрозненные группы, географическое положение которых подтверждает их генетическую связь с фенноскандинавским и атлантикоевропейским фрагментами ареала вида в Европе.</p></abstract><trans-abstract xml:lang="en"><p>The article analyzes the genetic diversity of populations of Lobelia dortmanna L. (Dortmann’s lobelia) performed using molecular iPBS markers. All known populations in Belarus from lakes Beloye (Luninetsky district), Svityaz (Novogrudsky district), Belyanets and Bredno (Rossonosky district), located in island localities far from the south-east border of the range, were studied. The research results showed that Nei’s greatest genetic distance is characteristic of the Belyanets population (0.15), and the least one is characteristic of the Bredno population (0.10). For this species, no relationship has been identified between the position of the population within the range, its size, plant vitality and the level of genetic diversity.</p><p>For Belarusian populations of Lobelia dortmanna L., a predominance of interpopulation variability (54 %) over intrapopulation variability (46 %) was established, which indicates a high level of their genetic differentiation. The gene flow for populations of the species under study is 0.35, which confirms the low level of gene exchange between populations and is consistent with an extremely low population size of the species in the territory of Belarus, as well as the isolation of populations both from the main fragment of the species’ range and among themselves. Data of the cluster analysis of Lobelia dortmanna L. populations demonstrate their division into 2 genetically distinct groups, the geographical location of which confirms their genetic connection with the Fennoscandian and Atlantic-European fragments of the species’ range in the northern part of Europe.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>охраняемые растения</kwd><kwd>водные макрофиты</kwd><kwd>молекулярные iPBS-маркеры</kwd><kwd>генетическое разнообразие популяций</kwd></kwd-group><kwd-group xml:lang="en"><kwd>protected plants</kwd><kwd>aquatic macrophytes</kwd><kwd>molecular iPBS markers</kwd><kwd>genetic diversity of populations</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Расселение Лобелии Дортмана на Витебщине / И. М. 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