<?xml version="1.0" encoding="ISO-8859-1"?><article 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">
<front>
<journal-meta>
<journal-id>1027-152X</journal-id>
<journal-title><![CDATA[Revista Chapingo. Serie horticultura]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Chapingo Ser.Hortic]]></abbrev-journal-title>
<issn>1027-152X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Chapingo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1027-152X2024000200055</article-id>
<article-id pub-id-type="doi">10.5154/r.rchsh.2022.10.013</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Methods for estimating the level of polyembryony in Mexican lime and Italian lemon seeds]]></article-title>
<article-title xml:lang="es"><![CDATA[Métodos para estimar el nivel de poliembrionía en semillas de lima mexicana y limón italiano]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robles-González]]></surname>
<given-names><![CDATA[Marciano Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo-Medrano]]></surname>
<given-names><![CDATA[Silvia Heréndira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Manzanilla-Ramirez]]></surname>
<given-names><![CDATA[Miguel Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina-Urrutia]]></surname>
<given-names><![CDATA[Víctor Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Campo Experimental Tecomán ]]></institution>
<addr-line><![CDATA[Tecomán Colima]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Guadalajara  ]]></institution>
<addr-line><![CDATA[Zapopan Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>07</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>07</month>
<year>2024</year>
</pub-date>
<volume>30</volume>
<numero>2</numero>
<fpage>55</fpage>
<lpage>69</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1027-152X2024000200055&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1027-152X2024000200055&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1027-152X2024000200055&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Polyembryony is a common trait in most citrus varieties. The level of polyembryony has the potential to be used as a descriptor in the characterization of varieties or to select parents in conventional hybridization work. The aim of this research was to find an efficient methodology to detect, count and estimate the potential number of embryos per seed, the percentage of polyembryonic seeds and the level of polyembryony in the varieties &#8216;Colimex&#8217; and &#8216;Lise&#8217; of Mexican lime, and the variety &#8216;Rosenberger&#8217; of true lemon. Four methodologies were evaluated: 1) direct counting of embryos in mature seeds (DCEMS), 2) direct counting of embryos in immature seeds (DCEIS), 3) counting of seedlings derived from mature seeds germinated in vitro (CSMSGV) and 4) counting of seedlings derived from mature seeds germinated in substrate (CSMSGS). The highest averages of embryos per seed and percentage of polyembryonic seeds were recorded with the DCEMS and CSMSGV methods (P &#8804; 0.01), so it was concluded that they are adequate to estimate these variables in the genotypes studied. The varieties &#8216;Colimex&#8217; and &#8216;Lise&#8217; had 80.65 and 78.27 %, respectively, of seeds with two or more embryos, resulting in a high level of polyembryony, while 'Rosenberger', with 18.37 %, was slightly polyembryonic (P &#8804; 0.01).]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La poliembrionía es un rasgo común en la mayoría de las variedades de cítricos. El nivel de poliembrionía tiene potencial para usarse como un descriptor en la caracterización de variedades o para seleccionar progenitores en trabajos de hibridación convencional. El objetivo de este trabajo fue encontrar una metodología eficiente para detectar, contabilizar y estimar el número potencial de embriones por semilla, el porcentaje de semillas poliembriónicas y el nivel de poliembrionía en las variedades &#8216;Colimex&#8217; y &#8216;Lise&#8217; de lima mexicana, y la variedad &#8216;Rosenberger&#8217; de limón verdadero. Se evaluaron cuatro metodologías: 1) conteo directo de embriones en semillas maduras (CDESM), 2) conteo directo de embriones en semillas inmaduras (CDESI), 3) conteo de plántulas originadas de semillas maduras germinadas in vitro (CPSMGV) y 4) conteo de plántulas originadas de semillas maduras germinadas en sustrato (CPSMGS). Los mayores promedios de embriones por semilla y porcentaje de semillas poliembriónicas se registraron con los métodos CDESM y CPSMGV (P &#8804; 0.01), por lo cual se concluyó que son adecuados para estimar estas variables en los genotipos estudiados. Las variedades &#8216;Colimex&#8217; y &#8216;Lise&#8217; presentaron 80.65 y 78.27 %, respectivamente, de semillas con dos o más embriones, lo cual resultó en un alto nivel de poliembrionía, mientras que &#8216;Rosenberger&#8217;, con 18.37 %, fue ligeramente poliembriónico (P &#8804; 0.01).]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Citrus aurantifolia]]></kwd>
<kwd lng="en"><![CDATA[seeds]]></kwd>
<kwd lng="en"><![CDATA[sporophytic apomixis]]></kwd>
<kwd lng="en"><![CDATA[multiple embryony]]></kwd>
<kwd lng="en"><![CDATA[nucellar embryos]]></kwd>
<kwd lng="es"><![CDATA[Citrus aurantifolia]]></kwd>
<kwd lng="es"><![CDATA[semillas]]></kwd>
<kwd lng="es"><![CDATA[apomixis esporofítica]]></kwd>
<kwd lng="es"><![CDATA[embrionía múltiple]]></kwd>
<kwd lng="es"><![CDATA[embriones nucelares]]></kwd>
</kwd-group>
</article-meta>
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