<?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>1405-3195</journal-id>
<journal-title><![CDATA[Agrociencia]]></journal-title>
<abbrev-journal-title><![CDATA[Agrociencia]]></abbrev-journal-title>
<issn>1405-3195</issn>
<publisher>
<publisher-name><![CDATA[Colegio de Postgraduados]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-31952017000700697</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Componentes del rendimiento en variedades de alfalfa (Medicago sativa L.)]]></article-title>
<article-title xml:lang="en"><![CDATA[Yield components of alfalfa (Medicago sativa L.) varieties]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-García]]></surname>
<given-names><![CDATA[Adelaido R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Salado]]></surname>
<given-names><![CDATA[Nicolás]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Joaquín-Cancino]]></surname>
<given-names><![CDATA[Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Garay]]></surname>
<given-names><![CDATA[Alfonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maldonado-Peralta]]></surname>
<given-names><![CDATA[María de los Á.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Santillán]]></surname>
<given-names><![CDATA[Paulino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Guerrero Unidad Académica de Medicina Veterinaria y Zootecnia N°2 ]]></institution>
<addr-line><![CDATA[Cuajinicuilapa Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Tamaulipas Facultad de Ingeniería y Ciencias División de Estudios de Posgrado]]></institution>
<addr-line><![CDATA[C. U. Ciudad Victoria Tamaulipas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Postgrado de Recursos Genéticos y Productividad-Ganadería  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Colegio de Postgraduados Posgrado de Recursos Genéticos y Productividad-Fisiología Vegetal ]]></institution>
<addr-line><![CDATA[Montecillo Texcoco]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>11</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>11</month>
<year>2017</year>
</pub-date>
<volume>51</volume>
<numero>7</numero>
<fpage>697</fpage>
<lpage>708</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-31952017000700697&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-31952017000700697&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-31952017000700697&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La alfalfa (Medicago sativa L.) es la leguminosa forrajera más importante para alimentación de ganado lechero en México. El objetivo de este estudio fue evaluar la respuesta productiva de cinco variedades de alfalfa en intervalos de corte definidos estacionalmente. La hipótesis fue que la variedad San Miguelito es la más productiva entre las variedades evaluadas. Las variedades San Miguelito, Júpiter, Atlixco, Vía láctea y Cuf 101 se distribuyeron aleatoriamente en 20 parcelas experimentales de 12x9 m, en un diseño de bloques completos al azar con cuatro repeticiones. Las evaluaciones incluyeron rendimiento de forraje, relación hoja: tallo, peso por tallo, población de tallos por m2, población de plantas por m2 y composición botánica y morfológica. Júpiter y Cuf 101 mostraron el rendimiento mayor (20 275 y 13 350 kg MS ha-1). La relación hoja:tallo fue mayor en Cuf 101 y menor en Júpiter. El peso por tallo fue mayor en Júpiter y menor en Cuf 101. La densidad mayor de tallos la presentaron Júpiter y Atlixco (641 tallos por m2) y Cuf 101 la menor (417 tallos por m2). En otoño e invierno se presentó la cantidad mayor de hoja y en primavera incrementaron las arvenses con Cuf 101. La estacionalidad del rendimiento fue alta, primavera y verano fueron las épocas con producción mayor debido a la densidad y el peso por tallo mayores. La variedad con producción mayor fue Júpiter y Cuf 101 con producción menor.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Alfalfa (Medicago sativa L.) is the most important legume forage for dairy cattle feed in Mexico. The objective of this study was to assess the productive response of five varieties of alfalfa in cutting intervals defined seasonally. Our hypothesis was that the San Miguelito variety is the most productive among the evaluated varieties. The varieties San Miguelito, Júpiter, Atlixco, Vía láctea and Cuf 101 were randomly distributed in 20 experimental plots of 12x9 m, in a completely randomized blocks design with four replications. Evaluations included yield feed, leaf:stem ratio, weight per stem, stem population per m2, plant population per m2 and botanical and morphological composition. Júpiter and Cuf 101 showed the highest yield (20 275 and 13 350 kg MS ha-1). Leaf:stem ratio was higher in Cuf 101 and smaller in Júpiter. The weight per stem was higher in Júpiter and lower in Cuf 101. Júpiter and Atlixco expressed the highest stem density (641 stems per m2) and Cuf 101 showed the lowest (417 stems per m2). The highest leaf quantity occurred in autumn and winter, and during spring weeds increased in Cuf 101. The yield seasonality was high, spring and summer were the periods with greater production, due to their density and weight per stem. The variety with the highest production was Júpiter, and Cuf 101 was the variety with smallest production.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Medicago sativa]]></kwd>
<kwd lng="es"><![CDATA[rendimiento de forraje]]></kwd>
<kwd lng="es"><![CDATA[relación hoja:tallo]]></kwd>
<kwd lng="es"><![CDATA[peso de tallo]]></kwd>
<kwd lng="es"><![CDATA[población de tallos]]></kwd>
<kwd lng="en"><![CDATA[Medicago sativa]]></kwd>
<kwd lng="en"><![CDATA[forage yield]]></kwd>
<kwd lng="en"><![CDATA[leaf: stem relation]]></kwd>
<kwd lng="en"><![CDATA[stem weight]]></kwd>
<kwd lng="en"><![CDATA[stem population]]></kwd>
</kwd-group>
</article-meta>
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