<?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>0187-7380</journal-id>
<journal-title><![CDATA[Revista fitotecnia mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. fitotec. mex]]></abbrev-journal-title>
<issn>0187-7380</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Fitogenética A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-73802025000100003</article-id>
<article-id pub-id-type="doi">10.35196/rfm.2025.1.3</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Selección familiar dentro de seis variedades nativas de maíz]]></article-title>
<article-title xml:lang="en"><![CDATA[Family selection within six native maize varieties]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Juárez-Lorenzo]]></surname>
<given-names><![CDATA[Francisca]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rincón-Sánchez]]></surname>
<given-names><![CDATA[Froylán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Torres]]></surname>
<given-names><![CDATA[Norma A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Benavides-Mendoza]]></surname>
<given-names><![CDATA[Adalberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Ramírez]]></surname>
<given-names><![CDATA[Francisco Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro Departamento de Fitomejoramiento ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro Centro de Capacitación y Desarrollo de Tecnología de Semillas ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro Departamento de Horticultura ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2025</year>
</pub-date>
<volume>48</volume>
<numero>1</numero>
<fpage>3</fpage>
<lpage>13</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-73802025000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-73802025000100003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-73802025000100003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En el sureste del estado de Coahuila, México se han identificado variedades nativas de maíz con potencial de rendimiento y características deseables que pueden ser incorporadas al mejoramiento genético. Los objetivos del presente estudio fueron estimar la respuesta a selección en rendimiento de grano, días a floración y prolificidad de seis variedades nativas de maíz después de dos ciclos de selección familiar, y describir los caracteres de mazorca y grano. El estudio consistió en la evaluación de seis variedades nativas en su versión original (O) y mejorada (M), cuatro de ellas adaptadas al área de transiciónaltura (JAG, CHAP, MTA y MTB) y dos de áreas intermedias (PT14R y PT14C), en dos localidades. Las variedades originales fueron sometidas a un ciclo de selección familiar de autohermanos y otro de hermanos completos. Se obtuvo información de los días a floración masculina (FM), prolificidad (PRO), rendimiento de grano (REND), longitud de mazorca (LMAZ), diámetro de mazorca (DMAZ) y olote (DOLO), número de hileras (HIL), granos por hilera (GHIL), la proporción grano-mazorca (DESG), longitud (LG), ancho (AG) y espesor (EG) del grano. En las variantes de selección (O vs M) sólo se encontraron diferencias (P &#8804; 0.01) en REND, FM y LG. En REND, en las seis variedades se obtuvo una respuesta promedio de 1.63 t ha-1 (18.2 %), con variación entre 8.0 y 37.4 % por ciclo de selección. En FM se obtuvo una reducción promedio de 3 d, con valores significativos entre 3 y 5 d en las variedades, excepto en PT14R, MTB y JAG, donde la madurez se mantuvo similar a las versiones originales. Los caracteres de la mazorca y grano permitieron describir las variedades en estudio, las cuales se mantuvieron sin cambio después de la selección. Se identificaron las variedades mejoradas PT14C y PT14R con potencial de rendimiento sobresaliente a través de ambientes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary In the Southeast of the state of Coahuila, Mexico, native maize varieties with yield potential and desirable traits that can be incorporated into genetic improvement have been identified. The objectives of this study were to estimate the response to selection in grain yield, days to flowering and prolificacy of six native maize varieties after two cycles of family selection, and to describe the ear and grain traits. The study consisted of the evaluation of six native varieties in their original (O) and improved (M) versions, four of those (JAG, CHAP, MTA and MTB) adapted to the transition-highland area, and two (PT14R and PT14C) from intermediate areas, in two locations. The original varieties were subjected to one self-family selection cycle and another of full-sib selection cycle. Information was obtained on days to male flowering (FM), prolificacy (PRO), grain yield (REND), ear length (LMAZ), ear (DMAZ) and cob (DOLO) diameter, number of kernel rows (HIL), kernels per row (GHIL), the grain-ear ratio (DESG), the length (LG), width (AG) and thickness (EG) of the kernel. In the selection variants (O vs M), differences (P &#8804; 0.01) were found only in REND, FM, and KL. In REND, an average response of 1.63 t ha-1 (18.2 %) was obtained for the six varieties, with variation between 8.0 and 37.4 % per selection cycle. In FM, an average reduction of 3 d was obtained, with significant values between 3 and 5 d in the varieties, except for PT14R, MTB and JAG where the maturity remained similar to the original versions. The ear and kernel traits allowed to describe the varieties under study, which remained unchanged after selection. The improved varieties PT14C and PT14R were identified with outstanding yield potential across environments.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Zea mays L.]]></kwd>
<kwd lng="es"><![CDATA[diversidad genética]]></kwd>
<kwd lng="es"><![CDATA[respuesta a la selección]]></kwd>
<kwd lng="es"><![CDATA[selección familiar aplicada a variedades nativas]]></kwd>
<kwd lng="en"><![CDATA[Zea mays L.]]></kwd>
<kwd lng="en"><![CDATA[family selection applied to native varieties]]></kwd>
<kwd lng="en"><![CDATA[genetic diversity]]></kwd>
<kwd lng="en"><![CDATA[response to selection]]></kwd>
</kwd-group>
</article-meta>
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