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 <front>
 <journal-meta>
 <journal-id journal-id-type="publisher-id">dongu-ecolog.ru</journal-id>
 <journal-title-group>
 <journal-title xml:lang="ru">Проблемы экологии и охраны природы техногенного региона</journal-title>
 <trans-title-group xml:lang="en">
 <trans-title>Problems of Ecology and Nature Protection of Technogenic Region</trans-title>
 </trans-title-group>
 </journal-title-group>
 <issn publication-format="electronic">2077-3366</issn>
 </journal-meta>
 <article-meta>
 <article-id pub-id-type="publisher-id">407</article-id>
 <article-id pub-id-type="doi">10.5281/zenodo.21082278</article-id>
 <article-categories>
 <subj-group subj-group-type="toc-heading" xml:lang="en">
 <subject>Articles</subject>
 </subj-group>
 <subj-group subj-group-type="toc-heading" xml:lang="ru">
 <subject>Статьи</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">STRUCTURAL AND FUNCTIONAL PLASTICITY OF HERBACEOUS PLANTS STEMS UNDER ILLUMINATION GRADIENTS</article-title>
 <trans-title-group xml:lang="ru">
 <trans-title>СТРУКТУРНО‑ФУНКЦИОНАЛЬНАЯ ПЛАСТИЧНОСТЬ СТЕБЛЯ ТРАВЯНИСТЫХ РАСТЕНИЙ ПРИ ГРАДИЕНТЕ ОСВЕЩЕННОСТИ</trans-title>
 </trans-title-group>
 </title-group>
 <contrib-group>
 <contrib contrib-type="author">
 <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4994-7054</contrib-id>
 <name-alternatives>
 <name xml:lang="en">
 <surname>Usik</surname>
 <given-names>Dmitrii Andreevich</given-names>
 </name>
 <name xml:lang="ru">
 <surname>Усик</surname>
 <given-names>Дмитрий Андреевич</given-names>
 </name>
 </name-alternatives>
 <email>usik.d77@mail.ru</email>
 <xref ref-type="aff" rid="aff1">1</xref>
 </contrib>
 </contrib-group>
 <aff-alternatives id="aff1">
 <aff xml:lang="ru">
 <institution>ФГБОУ ВО «Уфимский университет науки и технологий»</institution>
 </aff>
 <aff xml:lang="en">
 <institution>Ufa University of Science and Technology</institution>
 </aff>
 </aff-alternatives>
 <pub-date date-type="pub" iso-8601-date="2026-07-02" publication-format="electronic">
 <day>02</day>
 <month>07</month>
 <year>2026</year>
 </pub-date>
 <issue>2</issue>
 <issue-title xml:lang="en">NO2 (2026)</issue-title>
 <issue-title xml:lang="ru">№2 (2026)</issue-title>
 <fpage>60</fpage>
 <lpage>70</lpage>
 <history>
 <date date-type="received" iso-8601-date="2026-07-07">
 <day>07</day>
 <month>07</month>
 <year>2026</year>
 </date>
 </history>
 <permissions>
 <copyright-statement xml:lang="ru">Copyright ©; 2026, Проблемы экологии и охраны природы техногенного региона</copyright-statement>
 <copyright-statement xml:lang="en">Copyright ©; 2026, Problems of Ecology and Nature Protection of Technogenic Region</copyright-statement>
 <copyright-year>2026</copyright-year>
 <copyright-holder xml:lang="ru">Проблемы экологии и охраны природы техногенного региона</copyright-holder>
 <copyright-holder xml:lang="en">Problems of Ecology and Nature Protection of Technogenic Region</copyright-holder>
 <license license-type="open-access" ns0:href="https://creativecommons.org/licenses/by-nc/4.0/" xml:lang="ru">
 <license-p>Эта статья распространяется на условиях лицензии Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)</license-p>
 </license>
 <license license-type="open-access" ns0:href="https://creativecommons.org/licenses/by-nc/4.0/" xml:lang="en">
 <license-p>This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)</license-p>
 </license>
 <ali:free_to_read />
 </permissions>
 <self-uri ns0:href="https://dongu-ecolog.ru/index.php/ecolog/article/view/407">https://dongu-ecolog.ru/index.php/ecolog/article/view/407</self-uri>
 <abstract xml:lang="en">
 <p>The stem provides mechanical support, transports water and assimilates, and is involved in regulating shoot architecture and adaptive plasticity. This study experimentally tested how changes in illuminance intensity affect stem morphometry (height and diameter) and lignification index (lignin mass fraction) in Brassica rapa L. var. rapa, a rapid-cycling line Wisconsin Fast Plants a fast-growing herbaceous species under controlled conditions. Measurements were taken on the 28th day of cultivation. A single-factor laboratory experiment (n = 90) was conducted with three photon flux levels (60, 180, and 420 μmol m−2 s−1) under identical temperature, humidity, photoperiod, and watering regimes. Differences were tested using analysis of variance. It was shown that with increasing illumination, stem height decreased, while diameter and lignin content increased (ANOVA: F(2.87) = 79.44; 44.11; 33.96; p</p>
 </abstract>
 <trans-abstract xml:lang="ru">
 <p>Стебель обеспечивает механическую опору, транспорт воды и ассимилятов, а также участвует в регуляции архитектоники побега и приспособительной пластичности растения. В работе экспериментально проверено, как изменение интенсивности освещения влияет на морфометрию стебля и показатель лигнификации у Brassica rapa L. var. rapa, rapid-cycling line Wisconsin Fast Plants – быстрорастущей модельной линии травянистого двудольного растения, удобной для воспроизводимых 28‑суточных лабораторных опытов. Проведен однофакторный лабораторный опыт (n = 90) с тремя уровнями фотосинтетически активного фотонного потока PPFD: 60, 180 и 420 мкмоль·м−2·с−1. Во всех группах поддерживали одинаковые температуру, влажность, фотопериод, режим полива и минерального питания; спектральный состав LED‑панелей был стандартизирован и описан в разделе «Материалы и методы». Измерения выполнены на 28‑е сутки выращивания; различия проверены дисперсионным анализом с предварительной оценкой нормальности остатков и гомогенности дисперсий. Показано, что при повышении освещенности высота стебля снижалась, тогда как диаметр и доля лигнина возрастали (ANOVA: F(2,87) = 79,44; 44,11; 33,96; p</p>
 </trans-abstract>
 <kwd-group xml:lang="en">
 <kwd>stem</kwd>
 <kwd>primary and secondary structure</kwd>
 <kwd>xylem</kwd>
 <kwd>phloem</kwd>
 <kwd>cambium</kwd>
 <kwd>lignin</kwd>
 <kwd>photomorphogenesis</kwd>
 <kwd>mechanical stability</kwd>
 <kwd>plasticity</kwd>
 </kwd-group>
 <kwd-group xml:lang="ru">
 <kwd>стебель</kwd>
 <kwd>первичное и вторичное строение</kwd>
 <kwd>ксилема</kwd>
 <kwd>флоэма</kwd>
 <kwd>камбий</kwd>
 <kwd>лигнин</kwd>
 <kwd>фотоморфогенез</kwd>
 <kwd>механическая устойчивость</kwd>
 <kwd>пластичность</kwd>
 </kwd-group>
 </article-meta>
 </front>
 <body>
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 </body>
 <back>
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 </back>
 </article>
