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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-2021-5-39-54</article-id><article-id custom-type="elpub" pub-id-type="custom">izvestiiatimacad-227</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>ГЕНЕТИКА, БИОТЕХНОЛОГИЯ, СЕЛЕКЦИЯ И СЕМЕНОВОДСТВО</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>GENETICS, BIOTECHNOLOGY, BREEDING AND SEED PRODUCTION</subject></subj-group></article-categories><title-group><article-title>ВЛИЯНИЕ УСЛОВИЙ КУЛЬТИВИРОВАНИЯ НА ЧАСТОТУ ПРОРАСТАНИЯ/РЕГЕНЕРАЦИИ МИКРОСПОРОГЕННЫХ ЭМБРИОИДОВ BRASSICA OLERACEA L</article-title><trans-title-group xml:lang="en"><trans-title>EFFECT OF CULTIVATION CONDITIONS ON THE GERMINATION/REGENERATION FREQUENCY OF MICROSPOROGENIC EMBRYOS BRASSICA OLERACEA L</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Синицына</surname><given-names>Анастасия Александровна</given-names></name><name name-style="western" xml:lang="en"><surname>Sinitsyna</surname><given-names>Anastasiya A.</given-names></name></name-alternatives><email xlink:type="simple">sinitsynaaa@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вишнякова</surname><given-names>Анастасия Васильевна</given-names></name><name name-style="western" xml:lang="en"><surname>Vishnyakova</surname><given-names>Anastasiya V.</given-names></name></name-alternatives><email xlink:type="simple">a.vishnyakova@rgau-msha.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Александрова</surname><given-names>Анастасия Алексеевна</given-names></name><name name-style="western" xml:lang="en"><surname>Aleksandrova</surname><given-names>Anastasiya A.</given-names></name></name-alternatives><email xlink:type="simple">nastya445577@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Монахос</surname><given-names>Сократ Григорьевич</given-names></name><name name-style="western" xml:lang="en"><surname>Monakhos</surname><given-names>Sokrat G.</given-names></name></name-alternatives><email xlink:type="simple">s.monakhos@rgau-msha.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российский государственный аграрный университет - МСХА имени К.А. Тимирязева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian State Agrarian University - Moscow Timiryazev Agricultural Academy</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>17</day><month>11</month><year>2022</year></pub-date><volume>0</volume><issue>5</issue><fpage>39</fpage><lpage>54</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Синицына А.А., Вишнякова А.В., Александрова А.А., Монахос С.Г., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Синицына А.А., Вишнякова А.В., Александрова А.А., Монахос С.Г.</copyright-holder><copyright-holder xml:lang="en">Sinitsyna A.A., Vishnyakova A.V., Aleksandrova A.A., Monakhos S.G.</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/227">https://izvestiia.timacad.ru/jour/article/view/227</self-uri><abstract><p>Большинство генотипов капусты белокочанной (Brassica oleracea L.) в культуре микроспор имеют низкую регенерационную способность, а также непрямое развитие проростков посредством образования адвентивных побегов или вторичного эмбриогенеза. Повышение частоты регенерации и формирование проростков из эмбриоидов без промежуточных стадий могут обеспечить больший выход удвоенных гаплоидов. Изучено влияние гелеобразователей: агара (11 г/л), агаргеля (4,5 г/л) и фитагеля (2 г/л) - на частоту регенерации/прорастания эмбриоидов в культуре изолированных микроспор капусты белокочанной (B. oleracea var. capitata), а также воздействие холодовой обработки при 5°C в течение 3, 6, 9, 12 и 15 дней в темноте на прямое прорастание эмбриоидов капусты кольраби (B. oleracea var. gongylodes). На регенерационной среде В5 с добавлением агара частота регенерации проростков капусты белокочанной была существенно выше, чем на средах с добавлением агаргеля и фитагеля. Кроме того, на средах, содержащих агаргель и фитагель, наблюдали витрификацию тканей эмбриоидов. Прямое прорастание эмбриоидов не происходило. Предварительная холодовая обработка эмбриоидов капусты кольраби при температуре 5°C в течение 3, 6 и 9 дней в полной темноте способствовала стимуляции прямого образования проростков из эмбриоидов и увеличению частоты прямого прорастания в два раза по сравнению с контролем. Более длительные сроки холодовой обработки в темноте, напротив, снизили частоту прямого прорастания эмбриоидов по сравнению с контролем в два раза при 12 днях, в шесть раз - при 15 днях инкубирования.</p></abstract><trans-abstract xml:lang="en"><p>Most genotypes of white cabbage (Brassica oleracea L.) have a low frequency of microspore-derived embryos germination and regeneration through adventitious shoots or secondary embryogenesis. Increasing the frequency of regeneration and the formation of seedlings can ensure the production of a large number of doubled haploids. This work studied the effects of gelling agents, such as agar (11 g/l), agargel (4.5 g/l), and phytagel (2 g/l), on the frequency of regeneration/germination of microspore-derived embryos of white cabbage (B. oleracea L.), as well as the effect of a cold incubation of kohlrabi cabbage embryos (B. oleracea var. gongylodes L. ) at 5°C for 3, 6, 9,12 and 15 days in complete darkness. The studies showed that when culturing embryos on regeneration medium B5 solidified with agar, the embryo germination and seedling regeneration were higher than those on media solidified with agargel and phytagel. No embryo germination but vitrification of embryo tissues was observed on media containing agargel and phytagel. Cold incubation of Kohlrabi cabbage embryos at 5°C for 3, 6 and 9 days in complete darkness twice increased the frequency of embryo germination compared to the control sample. More extended periods of cold incubation for 12 days in the dark, on the other hand, twice reduced the rate of direct embryo germination compared to the control sample, and for 15 days - 6 times.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>капуста белокочанная</kwd><kwd>капуста кольраби</kwd><kwd>культура изолированных микроспор</kwd><kwd>частота регенерации</kwd><kwd>прямое прорастание</kwd><kwd>холодовая обработка</kwd><kwd>агар</kwd><kwd>агаргель</kwd><kwd>фитагель</kwd><kwd>эмбриоид</kwd><kwd>проросток</kwd></kwd-group><kwd-group xml:lang="en"><kwd>white cabbage</kwd><kwd>kohlrabi cabbage</kwd><kwd>isolated microspore culture</kwd><kwd>regeneration frequency</kwd><kwd>embryo germination</kwd><kwd>cold treatment</kwd><kwd>agar</kwd><kwd>agargel</kwd><kwd>phytagel</kwd><kwd>seedling</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ahmadi B. 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