<?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>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282017000200223</article-id>
<article-id pub-id-type="doi">10.19136/era.a4n11.930</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Aptitud combinatoria y heterosis en híbridos de líneas endogámicas de maíz]]></article-title>
<article-title xml:lang="en"><![CDATA[Combining ability and heterosis in hybrids from inbred lines corn]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Torres]]></surname>
<given-names><![CDATA[Anselmo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna-Ortega]]></surname>
<given-names><![CDATA[J Guadalupe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gallegos-Robles]]></surname>
<given-names><![CDATA[Miguel A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Hernandez]]></surname>
<given-names><![CDATA[José L]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Preciado-Rangel]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero-Guerrero]]></surname>
<given-names><![CDATA[César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Carrillo]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro Unidad Laguna ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Politécnica de la Región Laguna  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Facultad de Agricultura y Zootecnia ]]></institution>
<addr-line><![CDATA[ Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Centro de Estudios Tecnológicos Industriales y de Servicios  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<volume>4</volume>
<numero>11</numero>
<fpage>223</fpage>
<lpage>232</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282017000200223&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282017000200223&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282017000200223&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: El trabajo se realizó en dos etapas, en la primera se formaron las cruzas en el campo experimental de la Universidad Autónoma Agraria Antonio Narro Unidad Laguna (UAAAN-UL), y en la segunda la evaluación en el campo experimental de la UAAAN-UL en los ciclos agrícola primavera y verano, y en el ejido Niágara, en el municipio de Aguascalientes, Aguascalientes, en primavera. El material genético fueron 17 líneas endogámicas, cuatro de la UAAAN-UL, dos del INIFAP y 11 del CIMMYT. El objetivo fue estimar la aptitud combinatoria general (ACG) de las líneas, la aptitud combinatoria específica (ACE) y cuantificar los efectos genéticos y la heterosis de las cruzas. Para la ACG sobresalieron las líneas macho LAN-388P, LB-32 y LB-40, y las líneas hembras CML-319, CML-318 y CML-278; para la ACE los mayores valores lo tuvieron las cruzas LAN-123xCML-278 (3.28 t ha-1), LAN-123xCML-318 (1.9 t ha-1), LB-40xCML-319 (1.7 t ha-1) y LAN 388PxCML-264 (1.52 t ha-1). Mientras que el mayor rendimiento de grano, lo tuvieron las cruzas LB-40xCML-319 (14.49 t ha-1), LB-32xCML-319 (14.17 t ha-1), LAN-388PxCML-264 (13.68 t ha-1), LAN-123xCML-278 (13.55 t ha-1) y LAN-388PxCML-278 (13.44 t ha-1). La varianza de dominancia superó a la varianza aditiva en rendimiento de grano (RG) y en los principales componentes del rendimiento. Se encontraron efectos positivos de heterosis para rendimiento de grano con respecto al progenitor superior en las cruzas LB-40xCML-319 y LB-32 x CML-319.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT: The work was carried out in two stages. In the first, the crosses were formed in the Universidad Autónoma Agraria Antonio Narro Unidad Laguna experimental field (UAAAN-UL), and in the second the evaluation was carried out in the UAAAN-UL experimental field in the spring and summer agricultural cyles, and in the Niagara ejido, in the municipality of Aguascalientes, Aguascalientes, in the spring. The genetic material was 17 inbred lines, four from UAAAN-UL, two from INIFAP and 11 from CIMMYT. The objective was to estimate the general combining ability (GCA) and the specific combining ability (SCA) of the lines, and to quantify the genetic effects and heterosis of the crosses. For GCA, the male lines that stood out were LAN-388P, LB-32 and LB-40, and the female lines were CML-319, CML-318 and CML-278; for SCA, the highest values were obtained by the crosses LAN-123xCML-278 (3.28 t ha-1), LAN-123xCML-318 (1.9 t ha-1), LB-40xCML-319 (1.7 t ha-1) and LAN-388PxCML-264 (1.52 t ha-1), while the best grain yield was obtained by the crosses LB-40xCML-319 (14.49 t ha-1), LB-32xCML-319 (14.17 t ha-1), LAN-388PxCML-264 (13.68 t ha-1), LAN-123xCML-278 (13.55 t ha-1) and LAN-388PxCML-278 (13.44 t ha-1). The dominance variance exceeded the additive variance in grain yield (GY) and in the main yield components. Positive effects of heterosis for grain yield were found with respect to the superior parent in the crosses LB-40xCML-319 and LB-32 x CML-319.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Zea mays L.]]></kwd>
<kwd lng="es"><![CDATA[probadores]]></kwd>
<kwd lng="es"><![CDATA[efectos genéticos]]></kwd>
<kwd lng="es"><![CDATA[híbridos]]></kwd>
<kwd lng="es"><![CDATA[cruzas]]></kwd>
<kwd lng="en"><![CDATA[Zea mays L.]]></kwd>
<kwd lng="en"><![CDATA[testers]]></kwd>
<kwd lng="en"><![CDATA[genetic effects]]></kwd>
<kwd lng="en"><![CDATA[hybrids]]></kwd>
<kwd lng="en"><![CDATA[crosses]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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