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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Actual directions of scientific researches of the XXI century: theory and practice</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Actual directions of scientific researches of the XXI century: theory and practice</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Актуальные направления научных исследований XXI века: теория и практика</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">2308-8877</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">2729</article-id>
   <article-id pub-id-type="doi">10.12737/4587</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Сельское и лесное хозяйство</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>Rural and forestry</subject>
    </subj-group>
    <subj-group>
     <subject>Сельское и лесное хозяйство</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Polymorphism of populations of local species of birches in the central forest-steppe</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Полиморфизм популяций местных видов берез в центральной лесостепи</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Чернодубов</surname>
       <given-names>Алексей Иванович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Chernodubov</surname>
       <given-names>Aleksey Ivanovich</given-names>
      </name>
     </name-alternatives>
     <email>leskulvglta@gmail.com</email>
     <bio xml:lang="ru">
      <p>доктор сельскохозяйственных наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>doctor of agricultural sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Манцева</surname>
       <given-names>Марина Александровна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Mantseva</surname>
       <given-names>Marina Александровна</given-names>
      </name>
     </name-alternatives>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Воронежский государственный лесотехнический университет имени Г.Ф. Морозова</institution>
    </aff>
    <aff>
     <institution xml:lang="en">Voronezh State University of Forestry and Technologies named after G.F. Morozov</institution>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2014-06-08T00:00:00+04:00">
    <day>08</day>
    <month>06</month>
    <year>2014</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2014-06-08T00:00:00+04:00">
    <day>08</day>
    <month>06</month>
    <year>2014</year>
   </pub-date>
   <volume>2</volume>
   <issue>3</issue>
   <fpage>199</fpage>
   <lpage>201</lpage>
   <self-uri xlink:href="https://anni.editorum.ru/en/nauka/article/2729/view">https://anni.editorum.ru/en/nauka/article/2729/view</self-uri>
   <abstract xml:lang="ru">
    <p>В статье представлена необходимость получения гибридов березы. Они могут быть получены при выявлении полиморфизма естественных популяций берез. Определены некоторые выводы и задачи для дальнейшего изучения. Обозначена актуальность работы.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The article includes the need for hybrids birch. They can be obtained in the detection of polymorphism of natural populations of birches. Some of the conclusions and tasks for further study are defined relevance of the work is indicated.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>гибридизация</kwd>
    <kwd>скрещивание</kwd>
    <kwd>продуктивность</kwd>
    <kwd>гетерозис</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>hybridization</kwd>
    <kwd>crossbreeding</kwd>
    <kwd>productivity</kwd>
    <kwd>heterosis</kwd>
   </kwd-group>
  </article-meta>
 </front>
 <body>
  <p>The aim of the research is to identify species that are resistant to weather factors and stress and are able to grow under different environmental conditions. For this it is necessary to solve a number of objectives: to select species, to master the crossbreeding technique, conducting of crossbreeding, obtaining and growing of hybrid seeds.</p>
 </body>
 <back>
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    <citation-alternatives>
     <mixed-citation xml:lang="ru">Попов В.К. Березовые леса Центральной лесостепи России: Монография / В.К. Попов. Воронеж.гос. лесотехн. академия. Воронеж: Изд-во Воронеж, гос. ун-та.2003.С424.</mixed-citation>
     <mixed-citation xml:lang="en">Popov V.K. Berezovye lesa Tsentral&amp;#180;noy lesostepi Rossii: Monografiya / V.K. Popov. Voronezh.gos. lesotekhn. akademiya. Voronezh: Izd-vo Voronezh, gos. un-ta.2003.S424.</mixed-citation>
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     <mixed-citation xml:lang="ru">Махнёв А.К. Внутривидовая изменчивость и популяционная структура берез секции Albae и Nanae. М.: Наука.1987.С128</mixed-citation>
     <mixed-citation xml:lang="en">Makhnev A.K. Vnutrividovaya izmenchivost&amp;#180; i populyatsionnaya struktura berez sektsii Albae i Nanae. M.: Nauka.1987.S128</mixed-citation>
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 </back>
</article>
