<?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>S0187-73802021000300381</article-id>
<article-id pub-id-type="doi">10.35196/rfm.2021.3.381</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Variación morfológica de híbridos F1 de gerbera]]></article-title>
<article-title xml:lang="en"><![CDATA[Morphological variation of gerbera F1 hybrids]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Colín]]></surname>
<given-names><![CDATA[Azucena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mejía-Carranza]]></surname>
<given-names><![CDATA[Jaime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Estrada]]></surname>
<given-names><![CDATA[Imelda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Alemán]]></surname>
<given-names><![CDATA[Juan C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Huerta]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Gerardo]]></surname>
<given-names><![CDATA[Marithza G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de México Centro Universitario Tenancingo ]]></institution>
<addr-line><![CDATA[Tenancingo Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,UAEMex Facultad de Ciencias Agrícolas ]]></institution>
<addr-line><![CDATA[Toluca Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Tecnológico de Estudios Superiores de Villa Guerrero  ]]></institution>
<addr-line><![CDATA[Villa Guerrero Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>44</volume>
<numero>3</numero>
<fpage>381</fpage>
<lpage>389</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-73802021000300381&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-73802021000300381&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-73802021000300381&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El principal método de mejoramiento genético en gerbera (Gerbera hybrida) es por hibridación y posterior selección. En México todas las variedades comerciales son importadas, lo que hace costosa su producción. El objetivo de esta investigación fue analizar la variación morfológica de 24 híbridos de gerbera obtenidos a través de cruzas intraespecíficas entre seis cultivares comerciales e identificar las variantes promisorias. Los híbridos se establecieron en invernadero en un diseño completamente al azar. Se evaluaron en plena floración mediante 44 descriptores propuestos por la Unión Internacional para la Protección de las Obtenciones Vegetales (UPOV). Se realizó análisis de varianza y análisis multivariados de agrupamiento, componentes principales y discriminante. Los híbridos mostraron el 65 % de las categorías que cubren la variación total de los descriptores empleados, con diferencias altamente significativas (P &#8804; 0.01) en variables cuantitativas e índices de 0.6 promedio entre valores extremos (menor/mayor); el diámetro del capítulo correlacionó positiva y significativamente con el ancho de la hoja (r = 0.54, P &#8804; 0.01) y con la longitud del pedúnculo (r = 0.47, P &#8804; 0.05). Se observaron 23 tonalidades en el color interno de la lígula exterior, así como los tres tipos de capítulo (sencillo, semidoble y doble). En un fenograma, con coeficiente de identidad promedio de 0.712 hubo separación de los híbridos en cinco grupos con distancias comprendidas entre 0.3 y 0.66. Los tres primeros componentes principales explicaron el 66 % de la varianza total, y las variables con mayor aporte correspondieron al capítulo floral. El análisis discriminante agrupó a los híbridos principalmente por las variables largo y ancho de la hoja, longitud de pedúnculo y diámetro del capítulo. Se identificaron híbridos con potencial comercial para flor de corte y de maceta, propagables mediante clonación in vitro.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary The main method for breeding gerbera (Gerbera hybrida) is hybridization and subsequent selection. In Mexico, all commercial varieties are imported, which makes their production expensive. The aim of this research was to analyze the morphological variation of 24 gerbera hybrids previously obtained through intraspecific crosses between six commercial cultivars and to identify the promising variants. The hybrids were established in a greenhouse under a completely randomized design. They were evaluated at full bloom using 44 descriptors as proposed by the International Union for the Protection of New Varieties of Plants (UPOV). Analyses of variance and multivariate cluster, principal component and discriminant analyses were applied. The hybrids showed 65 % of the categories that cover the total variation of the descriptors used, with highly significant differences (P &#8804; 0.01) in quantitative variables and indexes of 0.6 average between extreme values (lower/higher); the diameter of the flower head positively and significantly correlated with leaf width (r = 0.54, P &#8804; 0.01) and with peduncle length (r = 0.47, P &#8804; 0.05). Twenty-three shades were observed in the inner color of the outer ligule as well as the three types of flower head (single, semi-double and double). In a phenogram with an average identity coefficient of 0.712, the hybrids were separated into five groups with distances ranging from 0.3 to 0.66. The first three principal components explained 66 % of the total variance, and the variables with the highest contribution corresponded to the flower head. The discriminant analysis grouped the hybrids mainly by the variables leaf length and width, peduncle length and flower head diameter. Hybrids with commercial potential for cut and pot flower, amenable to propagate by in vitro cloning were identified.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Gerbera hybrida]]></kwd>
<kwd lng="es"><![CDATA[análisis multivariado]]></kwd>
<kwd lng="es"><![CDATA[híbridos F1]]></kwd>
<kwd lng="es"><![CDATA[variación morfológica]]></kwd>
<kwd lng="en"><![CDATA[Gerbera hybrida]]></kwd>
<kwd lng="en"><![CDATA[F1 hybrids]]></kwd>
<kwd lng="en"><![CDATA[morphological variation]]></kwd>
<kwd lng="en"><![CDATA[multivariate analysis]]></kwd>
</kwd-group>
</article-meta>
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