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  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher-id">research-focus</journal-id>
      <journal-title-group>
        <journal-title>Research Focus International Scientific Journal</journal-title>
        <abbrev-journal-title abbrev-type="publisher">Research Focus</abbrev-journal-title>
      </journal-title-group>
      <issn pub-type="epub" publication-format="electronic">2181-3833</issn>
      <publisher>
        <publisher-name>Ilm-fan va innovatsiyalar akademiyasi</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.66073/researchfocus.v5i2.2013</article-id>
      <article-id pub-id-type="other" assigning-authority="relibrary.uz">REL-A-013320</article-id>
      <article-categories>
        <subj-group subj-group-type="oak">
          <subject>06.00.00</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="uz">G‘O‘ZA DURAGAYLARINING QIMMATLI XO‘JALIK BELGILARINI SELEKSION BEKKROSS YO‘LI BILAN YAXSHILASH</article-title>
        <trans-title-group xml:lang="en">
          <trans-title>IMPROVING THE VALUABLE ECONOMIC TRAITS OF COTTON HYBRIDS BY MEANS OF SELECTION BACKCROSSING</trans-title>
        </trans-title-group>
        <trans-title-group xml:lang="ru">
          <trans-title>УЛУЧШЕНИЕ ЦЕННЫХ ХОЗЯЙСТВЕННЫХ ПРИЗНАКОВ ГИБРИДОВ ХЛОПЧАТНИКА ПУТЕМ СЕЛЕКЦИОННОГО БЕККРОССА</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group content-type="author">
        <contrib contrib-type="author">
          <string-name>Zaripov Xabib Salimovich</string-name>
          <aff>Paxta seleksiyasi, urug‘chiligi va yetishtirish agrotexnologiyalari ilmiy-tadqiqot instituti Navoiy viloyati ilmiy tajriba stansiyasi direktori (O‘zbekiston Respublikasi Navoiy viloyati Karmana tumani Paxtaobod MFY Taraqqiyot-1 ko‘chasi)</aff>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Namozov Doniyor Nozim o‘g‘li</string-name>
          <aff>Paxta seleksiyasi, urug‘chiligi va yetishtirish agrotexnologiyalari ITI (PSUYaITI) Navoiy viloyati ilmiy tajriba stansiyasi, qishloq xo‘jaligi ekinlari seleksiyasi va urug‘chiligi laboratoriyasi mudiri. (O‘zbekiston Respublikasi Navoiy viloyati Karmana tumani Paxtaobod MFY Taraqqiyot-1 ko‘chasi)</aff>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Nazarmatov Abdumadjid Raximovich</string-name>
          <aff>Paxta seleksiyasi, urug‘chiligi va yetishtirish agrotexnologiyalari ilmiy-tadqiqot instituti Navoiy viloyati ilmiy tajriba stansiyasi direktorning ilmiy ishlar va innovatsiyalar bo‘yicha o‘rinbosari (O‘zbekiston Respublikasi Navoiy viloyati Karmana tumani Paxtaobod MFY Taraqqiyot-1 ko‘chasi)</aff>
        </contrib>
      </contrib-group>
      <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2026-03-05">
        <day>05</day>
        <month>03</month>
        <year>2026</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2026</year>
      </pub-date>
      <volume>5</volume>
      <issue>2</issue>
      <fpage>30</fpage>
      <lpage>38</lpage>
      <permissions>
        <license xlink:href="https://creativecommons.org/licenses/by/4.0">
          <ali:license_ref>https://creativecommons.org/licenses/by/4.0</ali:license_ref>
          <license-p>Ushbu asar Creative Commons Attribution 4.0 International litsenziyasi asosida litsenziyalangan.</license-p>
        </license>
      </permissions>
      <self-uri xlink:href="https://relibrary.uz/REL-A-013320/"/>
      <abstract xml:lang="uz">
        <p>Navoiy ilmiy-tajriba stansiyasida “Bacillus thuringiensis” (Bt) texnologiyasini tadbiq etish orqali ko‘sak qurtiga va glifosatga bardoshlilik genini mahalliy g‘o‘za navlariga o‘tkazish imkoniyatlarini oshirish maqsadida Xitoyning XLZ-52 g‘o‘za navini янги mahalliy “S-01, Sharofat, SP-0655, SP-03, Sulton, S-6577, S-6601, S-8292, SP-0656, SP-04 va Buxoro-8” g‘o‘za navlari bilan o‘zaro chatishtirib olingan F1 duragaylarda bekkross chatishtirish ishlari olib borildi. Ko‘sak qurtiga bardoshlilikning qo‘shaloq Bt genlari (CRY1AC va CRY2AB) va gerbitsidga bardoshlilikning (4EPSPS) genini mahalliy g‘o‘za navlariga o‘tkazish uchun xorijiy “XinLuZao-52” g‘o‘za navi jami 11 ta mahalliy navlar bilan chatishtirib olingan F1 duragaylarda o‘tkazilgan bekkross chatishtirish natijalari, hosildorlik ko‘rsatkichlari, qimmatli xo‘jalik belgilarining samaradorligi o‘rganildi. Natijalar XLZ-52 navining duragaylashdagi yuqori kombinativ qobiliyatga ega ekanligini va sifatli tola yetishtirishda istiqbolli genetik resurs sifatida qo‘llanishi mumkinligini ko‘rsatdi.</p>
      </abstract>
      <trans-abstract xml:lang="en">
        <p>In order to expand the possibilities of transferring the genes of resistance to the cotton bollworm and to glyphosate into local cotton varieties through the application of Bacillus thuringiensis (Bt) technology at the Navoi Scientific-Experimental Station, backcrossing work was carried out on the F1 hybrids obtained by crossing the Chinese cotton variety XLZ-52 with the new local cotton varieties S-01, Sharofat, SP-0655, SP-03, Sulton, S-6577, S-6601, S-8292, SP-0656, SP-04 and Bukhara-8. In order to transfer the double Bt genes of bollworm resistance (CRY1AC and CRY2AB) and the gene of herbicide resistance (4EPSPS) into local cotton varieties, the results of the backcrossing carried out on the F1 hybrids obtained by crossing the foreign cotton variety XinLuZao-52 with a total of 11 local varieties, the yield indicators and the effectiveness of the valuable economic traits were studied. The results showed that the XLZ-52 variety possesses a high combining ability in hybridization and can be used as a promising genetic resource in the production of high-quality fibre.</p>
      </trans-abstract>
      <trans-abstract xml:lang="ru">
        <p>В целях расширения возможностей передачи местным сортам хлопчатника генов устойчивости к хлопковой совке и к глифосату посредством внедрения технологии «Bacillus thuringiensis» (Bt) на Навоийской научно-опытной станции были проведены работы по беккроссному скрещиванию гибридов F1, полученных при скрещивании китайского сорта хлопчатника XLZ-52 с новыми местными сортами «S-01, Sharofat, SP-0655, SP-03, Sulton, S-6577, S-6601, S-8292, SP-0656, SP-04 и Бухара-8». Для передачи местным сортам хлопчатника сдвоенных Bt-генов устойчивости к хлопковой совке (CRY1AC и CRY2AB) и гена устойчивости к гербициду (4EPSPS) изучены результаты беккроссного скрещивания, проведённого на гибридах F1, полученных при скрещивании зарубежного сорта хлопчатника «XinLuZao-52» с 11 местными сортами, показатели урожайности и эффективность ценных хозяйственных признаков. Результаты показали, что сорт XLZ-52 обладает высокой комбинационной способностью при гибридизации и может применяться как перспективный генетический ресурс при выращивании качественного волокна.</p>
      </trans-abstract>
      <kwd-group xml:lang="uz">
        <kwd>XLZ-52 navi</kwd>
        <kwd>ko‘sak qurti</kwd>
        <kwd>F1 duragaylar</kwd>
        <kwd>tola chiqimi</kwd>
        <kwd>glifosatga chidamlilik</kwd>
        <kwd>bekkross chatishtirish</kwd>
        <kwd>xo‘jalik belgilari</kwd>
        <kwd>1000 dona chigit og‘irligi</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <kwd>XLZ-52 variety</kwd>
        <kwd>cotton bollworm</kwd>
        <kwd>F1 hybrids</kwd>
        <kwd>fibre yield</kwd>
        <kwd>glyphosate resistance</kwd>
        <kwd>backcrossing</kwd>
        <kwd>economic traits</kwd>
        <kwd>weight of 1000 cotton seeds</kwd>
      </kwd-group>
      <kwd-group xml:lang="ru">
        <kwd>сорт XLZ-52</kwd>
        <kwd>хлопковая совка</kwd>
        <kwd>гибриды F1</kwd>
        <kwd>выход волокна</kwd>
        <kwd>устойчивость к глифосату</kwd>
        <kwd>беккроссное скрещивание</kwd>
        <kwd>хозяйственные признаки</kwd>
        <kwd>масса 1000 семян хлопчатника</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <back>
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</article>
