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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">RUDN Journal of Agronomy and Animal Industries</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Agronomy and Animal Industries</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Агрономия и животноводство</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2312-797X</issn><issn publication-format="electronic">2312-7988</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">19539</article-id><article-id pub-id-type="doi">10.22363/2312-797X-2020-15-1-7-18</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Morphology and biochemistry of plants</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Морфология и биохимия растений</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">Affect of Rhizotorphin on chlorophyll content and productivity of introduced soybean cultivars</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние применения инокулянта «Ризоторфин» на содержание хлорофилла в листьях интродуцированных сортов сои и их урожайность</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tsvetkova</surname><given-names>Yulia Vladislavovna</given-names></name><name xml:lang="ru"><surname>Цветкова</surname><given-names>Юлия Владиславовна</given-names></name></name-alternatives><bio xml:lang="en"><p>agronomist, laboratory of mycology, Russian Plant Quarantine Center, Master, Agrobiological Department, Agrarian and Technological Institute, Peoples’ Friendship University of Russia</p></bio><bio xml:lang="ru"><p>агроном лаборатории микологии, магистр, агробиологический департамент, Аграрно-технологический институт, Российский университет дружбы народов</p></bio><email>yutska@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Lyashko</surname><given-names>Marina Ustimovna</given-names></name><name xml:lang="ru"><surname>Ляшко</surname><given-names>Марина Устимовна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Biological Sciences, Associate Professor, Agrobiological Department, Agrarian and Technological Institute</p></bio><bio xml:lang="ru"><p>кандидат биологических наук, доцент агробиологического департамента, Аграрно-технологический институт</p></bio><email>nagvic@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Strazhnikova</surname><given-names>Inna Ivanovna</given-names></name><name xml:lang="ru"><surname>Стражникова</surname><given-names>Инна Ивановна</given-names></name></name-alternatives><bio xml:lang="en"><p>Head of the Department of Testing Agricultural Plant Cultivars for Economic Utility</p></bio><bio xml:lang="ru"><p>начальник отдела испытания сортов сельскохозяйственных растений на хозяйственную полезность</p></bio><email>strazhnikova.inna@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Russian Plant Quarantine Center</institution></aff><aff><institution xml:lang="ru">Всероссийский центр карантина растений</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Рeoples’ Friendship University of Russia (RUDN University)</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Nesvizhskaya Crop Testing Station</institution></aff><aff><institution xml:lang="ru">ГСХУ «Несвижская сортоиспытательная станция»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2020</year></pub-date><volume>15</volume><issue>1</issue><issue-title xml:lang="en">VOL 15, NO1 (2020)</issue-title><issue-title xml:lang="ru">ТОМ 15, №1 (2020)</issue-title><fpage>7</fpage><lpage>18</lpage><history><date date-type="received" iso-8601-date="2020-03-17"><day>17</day><month>03</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Tsvetkova Y.V., Lyashko M.U., Strazhnikova I.I.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Цветкова Ю.В., Ляшко М.У., Стражникова И.И.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Tsvetkova Y.V., Lyashko M.U., Strazhnikova I.I.</copyright-holder><copyright-holder xml:lang="ru">Цветкова Ю.В., Ляшко М.У., Стражникова И.И.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://agrojournal.rudn.ru/agronomy/article/view/19539">https://agrojournal.rudn.ru/agronomy/article/view/19539</self-uri><abstract xml:lang="en"><p>Biotic nitrogen fi is a phenomenon mainly depended on mutualistic interrelation between host plant and root nodule bacteria. This interrelation affects photosynthesis and productivity of biological N-fixation and requires studies of biological particularities of grown legume cultivars and effectiveness of Bradyrhizobium strains used for seed inoculation. A field experiment was conducted on the territory of Nesvizhskaya Crop Testing Station (Minsk region, Republic of Belarus). Based on chlorophyll and nitrogen content in soybean leaves, number of nodules on roots of cultivars grown, and on quantity of nitrogen accumulated in plants, four soybean cultivars were assessed. The cultivar Pripyat (control) has poorly responded on inoculation, whereas cultivars Slavyankа an Sobrini responded well by increase of chlorophyll and nitrogen content in leaves and by larger number of root nodules. As a result, they produced unusually high seed yields. Therefore, these soybean cultivars may be recommended for wide use in regions of Belarus.</p></abstract><trans-abstract xml:lang="ru"><p>Проявление продуктивной симбиотической азотфиксации у бобовых растений зависит от взаимодействия между высшим растением-хозяином и ризобиальными клубеньковыми бактериями. Сложная взаимосвязь фотосинтеза и процесса биологической азотфиксации предопределяет необходимость изучения биологических особенностей культивируемых сортов сои и используемых штаммов клубеньковых бактерий. Работа выполнена на Несвижской сортоиспытательной станции в Минской области Республики Беларусь. Дана оценка интродуцированных сортов сои по содержанию хлорофилла в листьях растений, количеству клубеньков на корнях сои и накоплению общего азота в растениях как взаимозависимых показателей, характеризующих эффективность симбиоза. Установлено, что местный сорт Припять, используемый в качестве контроля, мало отзывчив на инокуляцию семян перед посевом. Обработка семян интродуцированных сортов обеспечила повышение содержания хлорофилла в листьях, способствовала формированию большего числа клубеньков на корнях, достоверную прибавку урожая и накопление большего количества биологического азота. С учетом всех этих показателей сорта сои Галлек, Славянка и Собрини могут быть рекомендованы для масштабной интродукции в районах выращивания сои в Беларуси.</p></trans-abstract><kwd-group xml:lang="en"><kwd>soybean</kwd><kwd>inokulum Rhizotorphin</kwd><kwd>nitrogen fixation</kwd><kwd>chlorophyll</kwd><kwd>seed yield</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>соя</kwd><kwd>инокулянт Ризотрофин</kwd><kwd>азотфиксация</kwd><kwd>хлорофилл</kwd><kwd>симбиотическая активность</kwd><kwd>урожайность</kwd></kwd-group><funding-group><award-group><award-id></award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Bethlenfalvay GJ, Abu-Shakra SS, Phillips DA. Interdependence of Nitrogen Nutrition and Photosynthesis in Pisum sativum L: II. Host Plant Response to Nitrogen Fixation by Rhizobium Strains. 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