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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Radiation biology. Radioecology</journal-id><journal-title-group><journal-title xml:lang="en">Radiation biology. Radioecology</journal-title><trans-title-group xml:lang="ru"><trans-title>Радиационная биология. Радиоэкология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-8031</issn><issn publication-format="electronic">3034-5898</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">681190</article-id><article-id pub-id-type="doi">10.31857/S0869803124060075</article-id><article-id pub-id-type="edn">NDGAVT</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>НЕИОНИЗИРУЮЩИЕ ИЗЛУЧЕНИЯ</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Неионизирующие излучения</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Response of spring barley to UV and γ-irradiation</article-title><trans-title-group xml:lang="ru"><trans-title>Ответная реакция ячменя ярового на УФ- и γ-облучение</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8814-6324</contrib-id><name-alternatives><name xml:lang="en"><surname>Guseva</surname><given-names>Oksana A.</given-names></name><name xml:lang="ru"><surname>Гусева</surname><given-names>Оксана Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gusevaoks65@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0214-7447</contrib-id><name-alternatives><name xml:lang="en"><surname>Tsygvintsev</surname><given-names>Pavel N.</given-names></name><name xml:lang="ru"><surname>Цыгвинцев</surname><given-names>Павел Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>paul-gomel@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7714-2419</contrib-id><name-alternatives><name xml:lang="en"><surname>Pavlov</surname><given-names>Alexander N.</given-names></name><name xml:lang="ru"><surname>Павлов</surname><given-names>Александр Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>49434@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Russian Institute of Radiology and Agroecology of National Research Centre “Kurchatov Institute”</institution></aff><aff><institution xml:lang="ru">Всероссийский научно-исследовательский институт радиологии и агроэкологии Национального исследовательского центра “Курчатовский институт”</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-12-20" publication-format="electronic"><day>20</day><month>12</month><year>2024</year></pub-date><volume>64</volume><issue>6</issue><fpage>633</fpage><lpage>644</lpage><history><date date-type="received" iso-8601-date="2025-05-29"><day>29</day><month>05</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-8031/article/view/681190">https://journals.eco-vector.com/0869-8031/article/view/681190</self-uri><abstract xml:lang="en"><p>In two vegetation experiments on barley plants, the effect of separate and combined UV-B, UV-A and γ-irradiation in different doses was studied for the varieties “Zazersky 85” and “Vladimir. The plants were assessed for flavonoid content, photosynthetic pigments, morphology parameters and yield. The daily dose of chronic UV-B-irradiation was 9 kJ/m<sup>2</sup>, chronic UV-A – from 7.2 to 72 kJ/m<sup>2</sup>, single γ-irradiation 2 and 4 Gy. It has been shown that spring barley varieties “Zazersky 85” and “Vladimir” differ in their sensitivity to chronic UV-B irradiation. When predicting the negative impact of UV-B radiation on plants, it is necessary to take into account the existing level of UVA radiation, since their effect is not additive. Stimulation of biomass growth under chronic UV irradiation may be accompanied by suppression of plant productivity. The response of barley plants to γ-irradiation can be significantly dependent on the level of UV-(A+B) radiation. In general, the dose-dependent effect of chronic UV and γ-irradiation can be considered as a transition from austress to distress and its irreversible disruption. The data from this study may be relevant for programs to develop new varieties of spring barley that are resistant to elevated levels of solar UV radiation.</p></abstract><trans-abstract xml:lang="ru"><p>В двух вегетационных экспериментах на растениях ячменя изучено влияние раздельного и сочетанного УФ-В-, УФ-А- и γ-облучения в разных дозах для сортов “Зазерский 85” и “Владимир”. У растений оценивали содержание флавоноидов, фотосинтезирующих пигментов, показатели морфологии и урожайность. Суточная доза хронического УФ-В-облучения составляла 9 кДж/м<sup>2</sup>, хронического УФ-А – от 7.2 до 72 кДж/м<sup>2</sup>, разового γ-облучения – 2 и 4 Гр. Показано, что сорта ячменя ярового “Зазерский 85” и “Владимир” различаются в чувствительности к хроническому УФ-В-облучению. При прогнозах негативного влияния УФ-В-излучения на растения необходимо учитывать и существующий уровень УФ-А-излучения, поскольку их действие не аддитивно. Стимуляция роста биомассы при хроническом УФ-облучении может сопровождаться угнетением урожайности растений. Реакция растений ячменя на γ-облучение может существенно зависеть от уровня УФ-(А+В)-излучения. В целом дозозависимое влияние хронического УФ- и γ-облучения можно рассматривать как переход от аустресса к дистрессу и его необратимому срыву. Данные настоящего исследования могут быть актуальны для программ по выведению новых сортов ячменя ярового, устойчивого к повышенным уровням солнечного УФ-излучения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ultraviolet radiation</kwd><kwd>g-radiation</kwd><kwd>barley</kwd><kwd>grain yield</kwd><kwd>biomass</kwd><kwd>flavonoids</kwd><kwd>chlorophylls</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ультрафиолетовое облучение</kwd><kwd>γ-облучение</kwd><kwd>ячмень</kwd><kwd>урожайность</kwd><kwd>биомасса</kwd><kwd>флавоноиды</kwd><kwd>хлорофиллы</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Caldwell M.M. Solar UV irradiation and the growth and development of higher plants. Photophysiology. 1971;6:131–177.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Небывалая убыль стратосферного озона в Арктике весной 2011 года. World Meteorology Organization. Press release. ВМО-№ 912. 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