<?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>S0187-73802026000100135</article-id>
<article-id pub-id-type="doi">10.35196/rfm.2026.1.135</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diversidad fenotípica in situ en maíz nativo de la region Zoque de Chiapas, México]]></article-title>
<article-title xml:lang="en"><![CDATA[In situ Phenotypic Diversity in Maize Native to the Zoque Region of Chiapas, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Hernández]]></surname>
<given-names><![CDATA[Eduardo de la]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Latournerie-Moreno]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Sánchez]]></surname>
<given-names><![CDATA[Esaú]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Andueza-Noh]]></surname>
<given-names><![CDATA[Rubén Humberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Coutiño-Estrada]]></surname>
<given-names><![CDATA[Bulmaro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Pérez]]></surname>
<given-names><![CDATA[Gilberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castañón-Nájera]]></surname>
<given-names><![CDATA[Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Tecnológico Nacional de México División de Estudios de Posgrado e Investigación ]]></institution>
<addr-line><![CDATA[Conkal Yucatán]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto de Investigaciones Forestales Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[ Chiapas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Tecnológico Nacional de México  ]]></institution>
<addr-line><![CDATA[Bácum Sonora]]></addr-line>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Juárez Autónoma de Tabasco División Académica de Ciencias Biológicas ]]></institution>
<addr-line><![CDATA[Villahermosa Tabasco]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2026</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2026</year>
</pub-date>
<volume>49</volume>
<numero>1</numero>
<fpage>135</fpage>
<lpage>140</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-73802026000100135&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-73802026000100135&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-73802026000100135&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En la región norte del estado de Chiapas, México se tiene poco conocimiento de la diversidad que se cultiva de maíz nativo, por lo que su estudio es relevante para un mejor aprovechamiento y conservación. El presente estudio se efectuó con el objetivo de determinar la variación fenotípica in situ de los maíces nativos de las comunidades de Benito Juárez y Miguel Hidalgo, municipio de Copainalá, Chiapas, México. En 30 poblaciones de maíz nativo se midieron 27 descriptores morfológicos de planta, espiga, mazorca, granos y olote. Con los datos obtenidos se realizó análisis de componentes principales (ACP) y conglomerados (AC). Los cinco primeros componentes principales explicaron el 69.0 % de la variación observada en las poblaciones evaluadas. El AC distribuyó la diversidad estudiada en cinco grupos en función del origen de las poblaciones. Las características que contribuyeron en mayor grado en explicar la variabilidad de las poblaciones son altura de planta, tamaño de las hojas, longitud de la espiga, longitud de mazorca, número de hileras y número de granos por hilera. La raza Olotillo, que predomina en la región, presentó amplia variación fenotípica; por ejemplo, en color de grano (blanco, amarillo, crema y morado o azul). Dentro de ésta, las poblaciones 17, 23 y 25 de bacalito blanco (Olotillo) son promisorias para usarse como progenitores en un programa de mejoramiento genético para la región del estudio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary In the northern region of the state of Chiapas, Mexico, little is known about the diversity of native maize varieties grown there, making research into this area important for better use and conservation. The present study was conducted with the aim of determining the in situ phenotypic variation of native maize varieties in the communities of Benito Juárez and Miguel Hidalgo, in the municipality of Copainalá, Chiapas, Mexico. Twenty-seven morphological descriptors of the plant, ear, cob, grains, and stover were measured in 30 native maize populations. Principal component analysis (PCA) and cluster analysis (CA) were performed on the data obtained. The first five principal components explained 69.0 % of the variation observed in the populations evaluated. CA distributed the diversity studied into five groups based on the origin of the populations. The characteristics that contributed most to explaining the variability of the populations were plant height, leaf size, ear length, cob length, number of rows, and number of grains per row. The Olotillo race, which predominates in the region, showed wide phenotypic variation; for example, in grain color (white, yellow, cream, and purple or blue). Within this race, populations 17, 23, and 25 of white bacalito (Olotillo) are promising for use as parents in a genetic improvement program for the study region.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Zea mays L.]]></kwd>
<kwd lng="es"><![CDATA[diversidad fenotípica]]></kwd>
<kwd lng="es"><![CDATA[germoplasma de maíz]]></kwd>
<kwd lng="es"><![CDATA[milpa]]></kwd>
<kwd lng="en"><![CDATA[Zea mays L.]]></kwd>
<kwd lng="en"><![CDATA[maize germplasm]]></kwd>
<kwd lng="en"><![CDATA[milpa]]></kwd>
<kwd lng="en"><![CDATA[phenotypic diversity]]></kwd>
</kwd-group>
</article-meta>
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