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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">vetpress</journal-id><journal-title-group><journal-title xml:lang="ru">Аграрная наука</journal-title><trans-title-group xml:lang="en"><trans-title>Agrarian science</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-8155</issn><issn pub-type="epub">2686-701X</issn><publisher><publisher-name>Редакция журнала "Аграрная наука"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32634/0869-8155-2023-370-5-78-82</article-id><article-id custom-type="elpub" pub-id-type="custom">vetpress-2626</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>АГРОНОМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>AGRONOMY</subject></subj-group></article-categories><title-group><article-title>Генотипы льна с горизонтальной устойчивостью к пасмо (септориозу) для целей селекции</article-title><trans-title-group xml:lang="en"><trans-title>Flax genotypes with horizontal resistance to pasmo (septoria) for breeding purposes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8425-6502</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кудрявцева</surname><given-names>Л. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudryavtseva</surname><given-names>L. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Людмила Платоновна Кудрявцева, кандидат сельскохозяйственных наук, ведущий научный сотрудник,</p><p>Комсомольский пр-т, д. 17/56, Тверь, 170041</p></bio><bio xml:lang="en"><p>Lyudmila Platonovna Kudryavtseva, Candidate of Agricultural Sciences, Leading Researcher,</p><p>17/56 Komsomolsky prospect, Tver, 170041</p></bio><email xlink:type="simple">info.trk@fnclk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8204-7341</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рожмина</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rozhmina</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Татьяна Александровна Рожмина, доктор биологических наук,</p><p>Комсомольский пр-т, д. 17/56, Тверь, 170041</p></bio><bio xml:lang="en"><p>Tatiana Alexandrovna Rozhmina, Doctor of Biological Sciences,</p><p>17/56 Komsomolsky prospect, Tver, 170041</p></bio><email xlink:type="simple">info.trk@fnclk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный научный центр лубяных культур</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Center for Bast Crops</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>05</day><month>06</month><year>2023</year></pub-date><volume>0</volume><issue>5</issue><fpage>78</fpage><lpage>82</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кудрявцева Л.П., Рожмина Т.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Кудрявцева Л.П., Рожмина Т.А.</copyright-holder><copyright-holder xml:lang="en">Kudryavtseva L.P., Rozhmina T.A.</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://www.vetpress.ru/jour/article/view/2626">https://www.vetpress.ru/jour/article/view/2626</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. Пасмо льна в настоящее время относится к наиболее распространенным болезням в льносеющих регионах Российской Федерации. В годы эпифитотий потери от болезни могут возрастать до 25–30%. Целенаправленная селекционная работа на устойчивость к пасмо сдерживается в первую очередь отсутствием высокоустойчивых к болезни исходных форм льна-долгунца.</p></sec><sec><title>Методы</title><p>Методы. Суммарной оценкой вредоносности болезни служил критерий «площадь под кривой развития болезни», рассчитывали индекс устойчивости каждого образца.</p></sec><sec><title>Результаты</title><p>Результаты. В условиях Тверской обл. (2019–2021 гг.) в инфекционном питомнике на искусственно провокационном фоне к пасмо в полевых условиях в динамике определена устойчивость коллекционного и селекционного материала льна-долгунца. В годы исследований был проанализирован 731 генотип льна, подсчитан уровень горизонтальной устойчивости каждого образца. В процессе изучения выделен 61 генотип с различным уровнем защиты, характеризующийся замедленным типом развития пасмо. Индекс устойчивости составил 0,26–1,8 у. е. Наибольшую селекционную и иммунологическую ценность представляют 29 генотипов (Л-2815-7-1, Л-2808-8-5, Л-2633-8-1, 0-15157-6-4, 0-15157-6-14, 0-15157-6-4, 0-13606-8-7, Л-2815-7-1, Л-3003-6-4, r-311-538-9, r-61-523-9, Л-2947-6-3 и др.) ввиду высокого индекса устойчивости. Выделенные образцы с горизонтальным типом устойчивости необходимо использовать для селекционных программ по льну. Эти образцы в течение двухтрех лет показывали высокий и средний индекс (0,26–0,6 у. е.) устойчивости.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Relevance</title><p>Relevance. Flax pasmo currently belongs to the most common diseases in the flax-growing regions of the Russian Federation. In the years of epiphytotics, losses from the disease can increase up to 25–30%. Purposeful breeding work for resistance to pasmo is restrained, first of all, by the absence of highly resistant to the disease of the initial forms of long-lived flax. The purpose of our research was to search for genotypes with horizontal resistance to flax pasmo for use in breeding programs for disease resistance.</p></sec><sec><title>Methods</title><p>Methods. The total assessment of the harmfulness of the disease was the criterion «area under the disease development curve», the stability index of each sample was calculated.</p></sec><sec><title>Results</title><p>Results. In the conditions of Tver region (2019–2021) in an infectious nursery on an artificially provocative background to pasmo in the field, the stability of the collection and breeding material of long-lived flax was determined in dynamics. During the years of research, 731 flax genotypes were analyzed, the level of horizontal stability of each genotype was calculated. During the study, 61 genotypes with different levels of protection were identified, characterized by a delayed type of pasmo development. The stability index was 0.26–1.8 cu. The greatest breeding and immunological value is represented by 29 genotypes (L-2815-7-1, L-2808-8-5, L-2633-8-1, 0-15157-6-4, 0-15157-6-14, 0-15157-6-4, 0-13606-8-7, L-2815-7-1, L-3003-6-4, r-311-538-9, r-61-523-9, L-2947-6-3 etc.) in view of the high stability index. Тhe highlighted Selected samples with a horizontal type of stability should be used for flax breeding programs. These samples for two to three years showed a high and average index (0.26–0.6 cu) of stability.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>лен</kwd><kwd>болезнь</kwd><kwd>пасмо (септориоз)</kwd><kwd>Septoria linicola</kwd><kwd>горизонтальная устойчивость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>flax</kwd><kwd>disease</kwd><kwd>pasmo (septoria)</kwd><kwd>Septoria linicola</kwd><kwd>horizontal stability</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Минобрнауки РФ в рамках Государственного задания ФГБНУ «Федеральный научный центр лубяных культур» (тема № FGSS-2019-2016).</funding-statement><funding-statement xml:lang="en">The work was carried out with the support of the Ministry of Education and Science of the Russian Federation within the framework of the State Task of the Federal State Budgetary Institution «Federal Scientific Center of Bast Crops» (topic No. FGSS-2019-2016).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Yang N., McDonald M.C., Solomon P.S., Milgate A.W. 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