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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">phytosanitary</journal-id><journal-title-group><journal-title xml:lang="ru">Фитосанитария. Карантин растений</journal-title><trans-title-group xml:lang="en"><trans-title>Plant Health and Quarantine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2782-327X</issn><publisher><publisher-name></publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.69536/FKR.2021.20.45.001</article-id><article-id custom-type="elpub" pub-id-type="custom">phytosanitary-46</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>НАУЧНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SCIENTIFIC RESEARCH</subject></subj-group></article-categories><title-group><article-title>О распространении и некоторых особенностях Cyclachaena xanthiifolia (Nutt.) Fresen. на территории Российской Федерации</article-title><trans-title-group xml:lang="en"><trans-title>On spreading and some peculiarities of Cyclachaena xanthiifolia (Nutt.) Fresen. in the Russian Federation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2200-8591</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Омельяненко</surname><given-names>Т. З.</given-names></name><name name-style="western" xml:lang="en"><surname>Omelyanenko</surname><given-names>T. Z.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Омельяненко Татьяна Зеликовна, младший научный сотрудник научно-методического отдела</p><p>г. Симферополь, Республика Крым</p></bio><bio xml:lang="en"><p>Tatyana Omelyanenko, Junior Researcher, Research and Methodology Department</p><p>Simferopol, Republic of Crimea</p></bio><email xlink:type="simple">o.tanya-work@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Южный филиал ФГБУ «Всероссийский центр карантина растений» (ФГБУ «ВНИИКР»)<country>Россия</country></aff><aff xml:lang="en">Southern Branch of FGBU “All-Russian Plant Quarantine Center” (FGBU “VNIIKR”)<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>30</day><month>07</month><year>2021</year></pub-date><volume>0</volume><issue>2</issue><fpage>50</fpage><lpage>61</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Омельяненко Т.З., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Омельяненко Т.З.</copyright-holder><copyright-holder xml:lang="en">Omelyanenko T.Z.</copyright-holder><license 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://phytosanitary.vniikr.ru/jour/article/view/46">https://phytosanitary.vniikr.ru/jour/article/view/46</self-uri><abstract><p>Изучена история распространения инвазионного вида – Cyclachaena xanthiifolia (Nutt.) Fresen. (Iva xanthiifolia Nutt.) – в ряде европейских стран и на территории Российской Федерации. Проанализирован ареал циклахены дурнишниколистной на территории Республики Крым и Российской Федерации в целом, согласно литературным данным, гербарным образцам и собственным полевым исследованиям. Определены наиболее типичные растительные сообщества, в  состав которых вид регулярно внедряется. Рассмотрены направления и объемы экспортирования зерновой продукции с  учетом фитосанитарных требований странимпортеров. Подчеркнута фитосанитарная значимость вида для ряда стран – импортеров российской зерновой продукции, которые включили циклахену дурнишниколистную в свои карантинные перечни. Приведены некоторые данные по фенологии и особенностям онтогенетического развития вида в условиях предгорного Крыма и на базе карантинного интродукционного участка Южного филиала ФГБУ «ВНИИКР» в 2020 г. </p></abstract><trans-abstract xml:lang="en"><p>The history of spreading of the invasive species Cyclachaena xanthiifolia (Nutt.) Fresen. (Iva xanthiifolia Nutt.) in some European countries and in the Russian Federation has been studied. The area of giant sumpweed in the Republic of Crimea and the Russian Federation in general has been analyzed, based on research data, herbarium samples and original field studies. The most typical plant communities, in which the species is regularly introduced, have been determined. The directions and volumes of grain products export have been considered, taking into account the phytosanitary requirements of importing countries. The phytosanitary significance of the species has been emphasized for a number of countries importing Russian grain products, which included giant sumpweed in their quarantine lists. Some data on phenology and peculiarities of ontogenetic development of the species in the conditions of the foothill Crimea and on the basis of the quarantine introduction area of the Southern Branch of FGBU “VNIIKR” in 2020 are presented. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>Чужеродные виды</kwd><kwd>Cyclachaena xanthiifolia</kwd><kwd>рудеральные местообитания</kwd><kwd>экспорт зерновой продукции</kwd><kwd>фенология развития</kwd><kwd>морфология вида</kwd><kwd>морфометрические показатели</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Alien species</kwd><kwd>Cyclachaena xanthiifolia</kwd><kwd>ruderal habitats</kwd><kwd>grain export</kwd><kwd>development phenology</kwd><kwd>species morphology</kwd><kwd>morphometric parameters</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">Абрамова Л., Ануфриев О., Крутьков В., Хасанова Г., 2008. 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