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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">izvestiiatimacad</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Тимирязевской сельскохозяйственной академии</journal-title><trans-title-group xml:lang="en"><trans-title>IZVESTIYA OF TIMIRYAZEV AGRICULTURAL ACADEMY</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-342X</issn><publisher><publisher-name>ФГБОУ ВО РГАУ-МСХА имени К.А. Тимирязева</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26897/0021-342X-2024-2-127-138</article-id><article-id custom-type="elpub" pub-id-type="custom">izvestiiatimacad-586</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>ЗЕМЛЕДЕЛИЕ, РАСТЕНИЕВОДСТВО, ЗАЩИТА РАСТЕНИЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>AGRONOMY, CROP PRODUCTION, PLANT PROTECTION</subject></subj-group></article-categories><title-group><article-title>Чувствительность возбудителя сетчатой пятнистости листьев (Pyrenophora teres) к двухкомпонентным фунгицидам на основе триазолового и стробилуринового классов</article-title><trans-title-group xml:lang="en"><trans-title>Sensitivity of the causative agent of net blotch of barley (Pyrenophora teres) to a two-component fungicide based on triazole and strobilurine classes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3696-2610</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яхник</surname><given-names>Я. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakhik</surname><given-names>Ya. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Яхник Яна Викторовна - аспирант, научный сотрудник лаборатории иммунитета растений к болезням.</p><p>350039, Краснодар, п/о 39, ФГБНУ ФНЦБзР; тел.: (918) 320–26–46</p></bio><bio xml:lang="en"><p>Yana V. Yakhnik - postgraduate student, Research Associate at the Laboratory of Plant Immunity to Diseases.</p><p>Post office 39, FSBSI FRCBPP, Krasnodar, 350039; phone: (918) 320–26–46</p></bio><email xlink:type="simple">yahnik1@mail.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/0000-0002-3696-2610</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волкова</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Volkova</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Волкова Галина Владимировна - д-р биол. наук, член-корреспондент РАН, зам. директора по развитию и координации НИР, руководитель лаборатории иммунитета растений к болезням.</p><p>350039, Краснодар, п/о 39, ФГБНУ ФНЦБзР; тел.: (918) 374–76–78</p></bio><bio xml:lang="en"><p>Galina V. Volkova - DSc (Bio), Corresponding Member of the Russian Academy of Sciences, Deputy Director for Development and Coordination.</p><p>Post office 39, FSBSI FRCBPP, Krasnodar, 350039; phone: (918) 374–76–78</p></bio><email xlink:type="simple">galvol.bpp@yandex.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 биологической защиты растений</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Center of Biological Plant Protection</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>10</day><month>05</month><year>2024</year></pub-date><volume>0</volume><issue>2</issue><fpage>127</fpage><lpage>138</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Яхник Я.В., Волкова Г.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Яхник Я.В., Волкова Г.В.</copyright-holder><copyright-holder xml:lang="en">Yakhik Y.V., Volkova G.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://izvestiia.timacad.ru/jour/article/view/586">https://izvestiia.timacad.ru/jour/article/view/586</self-uri><abstract><p>Исследования проводили с целью изучения чувствительности сетчатой пятнистости листьев (возбудитель – Pyrenophora teres Drechsler) к двухкомпонентным фунгицидам на основе триазолового и стробилуринового классов. Работу выполняли на интактных растениях ячменя и в чистой культуре гриба с использованием 4 препаратов (Амистар Экстра, СК, Амистар Голд, СК, Балий, КМЭ, Деларо, КС) и 3 вариантов обработки с различной от рекомендуемой производителями нормой применения: 0% (контроль без фунгицида), 50%, 100% (рекомендуемая производителями норма), 150%, 200%. Было выявлено, что чувствительность гриба P. teres значительно варьировала в зависимости от действующего вещества в составе токсиканта и механизмов взаимодействия с препаратом – in vivo (опосредованное) или in vitro (прямое). При обработке растений рекомендуемой производителями нормой минимальная биологическая эффективность выявлена после обработки фунгицидом Деларо, КС – 76,3% (на основе протиоконазола (175 г/л) и трифлоксистробина (150 г/л)), максимальные показатели биологической эффективности выявлены после обработки препаратом Балий, КМЭ – 83,1% (на основе азоксистробина (120 г/л) и пропиконазола (180 г/л)). При внесении фунгицидов в чашки с питательной средой рост колоний гриба замедлился во всех опытных вариантах, максимальные показатели биологической эффективности выявлены при внесении препаратов Амистар Голд, СК – 98,8% (на основе азоксистробина (125 г/л) и дифеноконазола (125 г/л)), Деларо, КС – 98,4% (на основе протиоконазола (175 г/л) и трифлоксистробина (150 г/л)); минимальные значения выявлены при внесении препарата Амистар Экстра, СК – 38,8% (на основе азоксистробина (200 г/л) и ципроконазола (80 г/л)). Внесение всех препаратов на питательную среду вызвало чрезмерное структурирование и патологическую дифференциацию мицелия гриба P. teres, на среде с фунгицидами наблюдалось ускорение фаз роста колоний в сравнении с контрольным вариантом. Внесение препаратов Амистар Голд, СК, Деларо, КС, и Балий, КМЭ полностью ингибировало споруляцию. Проведенные исследования позволили получить новые знания по изменению морфолого-культуральных признаков региональной популяции P. teres под действием фунгицидов триазолового и стробилуринового классов и ее чувствительности к токсикантам.</p></abstract><trans-abstract xml:lang="en"><p>The study was conducted to investigate the sensitivity of net blotch of barley (pathogen – Pyrenophora teres Drechsler) to two-component fungicides based on triazole and strobilurine classes. The work was carried out on intact barley plants and in pure culture of the fungus using four preparations (Amistar Extra, SC, Amistar Gold, SC, Baliy, MC, Delaro, SC) and five treatment options with different application rates from those recommended by the manufacturers (0 (control without fungicide), 50%, 100% (manufacturers’ recommended rate), 150%, 200%). It was found that the sensitivity of the P. teres fungus varied significantly depending on the active ingredient in the toxicant and the mechanism of interaction with the preparation – in vivo (indirect) or in vitro (direct). When the plants were treated with the doses recommended by the manufacturers, the minimum biological efficacy was found after treatment with the fungicide Delaro, SC – 76.3% (based on protioconazole (175 g/l) and trifloxystrobin (150 g/l)), the maximum biological efficacy was found after treatment with Baliy, MC – 83.1% (based on azoxystrobin (120 g/ l) and propiconazole (180 g/l)). When fungicides were applied to cups with a nutrient medium, the growth of fungal colonies was slowed down in all experimental variants, the maximum biological efficacy values were found after application of Amistar Gold, SC – 98.8% (on the basis of azoxystrobin (125 g/l) and diphenoconazole (125 g/l)), Delaro, SC – 98.4% (based on based on protioconazole (175 g/l) and trifloxystrobin (150 g/l)); minimum values were found when applying Amistar Extra, SC – 38.8% (on the basis of azoxystrobin (200 g/l) and ciproconazole (80 g/l)). The introduction of all preparations into the nutrient medium caused excessive structuring and pathological differentiation of P. teres fungus mycelium, and an acceleration of colony growth phases was observed on the medium with fungicides in comparison with the control variant. The introduction of Amistar Gold, SC, Delaro, SC, and Baliy, MC preparations completely inhibited sporulation. The conducted studies provided new knowledge on the changes in morphological and cultural characteristics of the regional population of P. teres under the action of fungicides of the triazole and strobilurine classes and its sensitivity to toxicants.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ячмень озимый</kwd><kwd>Pyrenophora teres</kwd><kwd>сетчатая пятнистость листьев</kwd><kwd>болезни ячменя</kwd><kwd>фунгициды</kwd><kwd>чувствительность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>winter barley</kwd><kwd>Pyrenophora teres</kwd><kwd>net blotch of barley</kwd><kwd>barley diseases</kwd><kwd>fungicides</kwd><kwd>sensitivity</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 23–76–10063, https://rscf.ru/project/23–76–10063/</funding-statement><funding-statement xml:lang="en">The research was carried out at the expense of a grant from the Russian Science Foundation № 23-76-10063, https://rscf.ru/project/23-76-10063/</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">Андреева Е.И., Зинченко В.А. 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