<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342022000900001</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v13i27.3147</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Atributos agronómicos y producción de forraje en ecotipos de Cenchrus purpureus en condiciones de trópico subhúmedo]]></article-title>
<article-title xml:lang="en"><![CDATA[Agronomic attributes and forage production in ecotypes of Cenchrus purpureus under subhumid tropical conditions]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villanueva-Avalos]]></surname>
<given-names><![CDATA[José Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-González]]></surname>
<given-names><![CDATA[Abieser]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quero-Carrillo]]></surname>
<given-names><![CDATA[Adrián Raymundo]]></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 Santiago Ixcuintla ]]></institution>
<addr-line><![CDATA[Santiago Ixcuintla Nayarit]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Colegio de Postgraduados Campus Montecillo ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2022</year>
</pub-date>
<volume>13</volume>
<numero>spe27</numero>
<fpage>1</fpage>
<lpage>9</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342022000900001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342022000900001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342022000900001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se estudió la morfología y producción forrajera en 16 ecotipos de Cenchrus purpureus (Schumach.) Morrone, en condiciones subtropicales del estado de Nayarit, México. El estudio se realizó en el Sitio Experimental El Verdineño-INIFAP. Los materiales evaluados incluyeron: Elefante, Uruguana, Taiwán, CT-169, Caña Africana, Maralfalfa, Mott, Roxo, King Grass morado, CT-115, Merkerón, Camerún, King Grass verde y tres ecotipos de Tamaulipas: Elefante Tamps, Maralfalfa Tamps y Roxo Tamps, establecidas en parcelas de 2 x 4 m2, con tres surcos de seis plantas cada uno, a razón de 25 000 plantas ha-1. Las evaluaciones se realizaron durante la época de déficit hídrico enero-julio de 2019 a 180 días de rebrote. Las variables morfológicas incluyeron: altura de planta, densidad de tallos por corona, diámetro basal y central de tallo, ancho y longitud de lámina de hoja central, número de entrenudos y longitud de entrenudo central. Para producción incluyeron: producción de materia seca (MS), tasa absoluta de crecimiento y relación hoja: tallo. Los datos se analizaron mediante un diseño completamente al azar, incluyendo a los 16 ecotipos y comparación de medias con Tukey (p&lt; 0.05). En todos los materiales se observaron diferencias significativas (p&lt; 0.01) entre variables morfológicas y productivas. Los materiales sobresalientes para producción de MS fueron Elefante Tamps y Caña africana, con producción de (60.9 y 57.3 Mg MS ha-1); asimismo, para tasa absoluta de crecimiento: 338.5 y 318.5 kg MS ha-1 día-1). Estos ecotipos constituyen una excelente alternativa para su utilización en los diferentes sistemas de producción de carne y leche en las áreas tropicales de México; lo anterior, bajo un corte a 180 días de rebrote en el estiaje.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The morphology and forage production were studied in 16 ecotypes of Cenchrus purpureus (Schumach.) Morrone, under subtropical conditions of the state of Nayarit, Mexico. The study was conducted at the El Verdineño-INIFAP Experimental Site. The materials evaluated included: Elephant, Uruguana, Taiwan, CT-169, Caña Africana, Maralfalfa, Mott, Roxo, purple King grass, CT-115, Merkeron, Cameroon, green King grass and three ecotypes from Tamaulipas: Elephant Tamps, Maralfalfa Tamps and Roxo Tamps, established in plots of 2 x 4 m2, with three furrows of six plants each, at a rate of 25 000 plants ha-1. The evaluations were conducted during the period of water deficit (January-July) of 2019 at 180 days of regrowth. Morphological variables included: plant height, stem density per crown, basal and central stem diameter, width and length of the central leaf blade, number of internodes and central internode length. For production, they included: dry matter (DM) production, absolute growth rate and leaf:stem ratio. Data were analyzed using a completely randomized design, including the 16 ecotypes, and comparison of means with Tukey (p&lt; 0.05). In all materials, significant differences (p&lt; 0.01) were observed between morphological and productive variables. The outstanding materials for DM production were Elephant Tamps and Caña Africana, with a production of 60.9 and 57.3 Mg DM ha-1; likewise, for absolute growth rate: 338.5 and 318.5 kg DM ha-1 day-1. These ecotypes constitute an excellent alternative for their use in the different beef and milk production systems in the tropical areas of Mexico; the above, under a cut at 180 days of regrowth in the dry season.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cenchrus purpureus]]></kwd>
<kwd lng="es"><![CDATA[morfología]]></kwd>
<kwd lng="es"><![CDATA[producción de forraje]]></kwd>
<kwd lng="en"><![CDATA[Cenchrus purpureus]]></kwd>
<kwd lng="en"><![CDATA[forage production]]></kwd>
<kwd lng="en"><![CDATA[morphology]]></kwd>
</kwd-group>
</article-meta>
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