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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">sevin</journal-id><journal-title-group><journal-title xml:lang="ru">ПОВОЛЖСКИЙ ЭКОЛОГИЧЕСКИЙ ЖУРНАЛ</journal-title><trans-title-group xml:lang="en"><trans-title>Povolzhskiy Journal of Ecology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1684-7318</issn><issn pub-type="epub">2541-8963</issn><publisher><publisher-name>Федеральное государственное бюджетное учреждение науки Институт проблем экологии и эволюции им. А. Н. Северцова РАН; Товарищество научных изданий КМК.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35885/1684-7318-2020-2-151-164</article-id><article-id custom-type="elpub" pub-id-type="custom">sevin-192</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Морфо-физиологическая и экологическая характеристика Melilotus officinalis (Fabaceae, Magnoliopsida) в условиях Республики Татарстан</article-title><trans-title-group xml:lang="en"><trans-title>Morpho-Physiological and Ecological Characteristics of Melilotus officinalis (Fabaceae, Magnoliopsida) in the Conditions of the Republic of Tatarstan</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5700-4203</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дубровная</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dubrovnaya</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>Svetlana A. Dubrovnaya </p><p>18 Kremlyovskaya St., Kazan 420008 </p></bio><email xlink:type="simple">sdubrovnaya@inbox.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/0000-0002-7867-2013</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хуснетдинова</surname><given-names>Л. З.</given-names></name><name name-style="western" xml:lang="en"><surname>Khusnetdinova</surname><given-names>L. Z.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>Landysh Z. Khusnetdinova </p><p>18 Kremlyovskaya St., Kazan 420008 </p></bio><email xlink:type="simple">husnetdinova.l@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/0000-0003-1226-5981</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аттобрах</surname><given-names>Н. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Attobrah</surname><given-names>N. K.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>Nana K. Attobrah </p><p>18 Kremlyovskaya St., Kazan 420008 </p></bio><email xlink:type="simple">nanaa2brah2487@yahoo.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Казанский федеральный университет<country>Россия</country></aff><aff xml:lang="en">Kazan Federal University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>07</day><month>07</month><year>2020</year></pub-date><volume>0</volume><issue>2</issue><fpage>151</fpage><lpage>164</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дубровная С.А., Хуснетдинова Л.З., Аттобрах Н.К., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Дубровная С.А., Хуснетдинова Л.З., Аттобрах Н.К.</copyright-holder><copyright-holder xml:lang="en">Dubrovnaya S.A., Khusnetdinova L.Z., Attobrah N.K.</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://sevin.elpub.ru/jour/article/view/192">https://sevin.elpub.ru/jour/article/view/192</self-uri><abstract><p>Исследована изменчивость морфологической структуры надземных вегетативных и генеративных органов Melilotus officinalis в экотонных сообществах лесостепной зоны, лесной зоны Республики Татарстан и на нарушенном участке лесной зоны, а также проведена оценка содержания аскорбиновой кислоты в различных частях растений в данных местообитаниях. Было выявлено, что реализация морфо-физиологического потенциала растений определялась условиями ботанико-географических зон. Растения донника лекарственного, произрастающие на черноземных почвах в условиях экотонных сообществ лесостепной зоны, отмечались более высокими показателями «общая биомасса», «биомасса листьев», «биомасса соцветий» по сравнению с растениями из сходных сообществ, сформированных на серых почвах лесной зоны. В условиях экотонных сообществ лесостепной зоны содержание аскорбиновой кислоты во всех частях растения также было выше. Растения M. оfficinalis, существующие в условиях нарушенного почвенного слоя и сниженной конкуренции с другими травянистыми видами, характеризовались максимальной реализацией био-морфологического потенциала при низком показателе коэффициента вариации (CV), что отражает большую однородность выборки. У растений в экстремальных условиях отмечали резкое увеличение концентрации аскорбиновой кислоты во всех частях, что можно рассматривать в качестве важного механизма адаптации вида к существованию в условиях резкого перепада температуры субстрата. Наряду с увеличением генеративного периода важным компонентом адаптации вида являлась низкая взаимосвязь между показателем «биомасса соцветий» и концентрацией аскорбиновый кислоты в соцветиях, «биомасса соцветий» и концентрацией аскорбиновой кислоты в листьях, что отражало стабильный процесс формирования генеративной системы донника. Все ценопопуляции характеризовались неполночленным онтогенетическим спектром с абсолютным максимумом на растениях средневозрастного онтогенетического состояния (95%).</p></abstract><trans-abstract xml:lang="en"><p>The morphological variability of the aerial vegetative and generative organs of Melilotus officinalis in the ecotone communities of the forest-steppe zone, the forest zone of the Republic of Tatarstan including desecrated parts of the forest zone was studied. The ascorbic acid content in various parts of the plants growing in these habitats was also analyzed. It was revealed that the realization of the morpho-physiological potential of plants was determined by the conditions of botanical-geographical zones. The sweet clover, growing on black soils under the conditions of ecotone communities of the forest-steppe zone, was found to have higher indicators of “total biomass”, “biomass of leaves”, “biomass of inflorescences”, etc., as compared to the plants from similar communities growing on gray soils of the forest zone. Under the conditions of the ecotone communities of the forest-steppe zone, the content of ascorbic acid in all parts of the plant was also higher. Melilotus officinalis, growing in the conditions of a desecrated soil layer, was characterized by the maximum realization of its biomorphological potential with a low value of the coefficient of variation (CV), which reflected a stronger homogeneity of the samples. In the plants growing under extreme conditions, a sharp increase in the concentration of ascorbic acid in all parts was observed, which could be considered as an important mechanism for the adaptation of the species to survival under conditions of a sharp temperature difference of the substrate. Along with an increase in the generative period, an important component of the species adaptation was the low correlation between the indicator “biomass of inflorescences” and the concentration of ascorbic acid in inflorescences, “biomass of inflorescences” and the concentration of ascorbic acid in the leaves, which reflected the stable process of formation of the generative system of sweet clover. All coenopopulations were characterized by an incomplete ontogenetic spectrum with an absolute maximum on the plants with the middle-age ontogenetic status (95%).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Melilotus officinalis</kwd><kwd>морфо-физиологическая адаптация</kwd><kwd>аскорбиновая кислота</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Melilotus officinalis</kwd><kwd>morpho-physiological adaptation</kwd><kwd>ascorbic acid</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена при финансовой поддержке Российского фонда фундаментальных исследований и Правительства Республики Татарстан (проект № 18-44-160015).</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>This work was supported by the Russian Foundation for Basic Research and Government of the Republic of Tatarstan (project No. 18-44-160015).</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">Алексеева Е. 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