<?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>S2007-09342017000200295</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v8i2.51</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Características reproductivas de nueve variedades de nochebuena (Euphorbia pulcherrima, Willd. ex Klotzch)]]></article-title>
<article-title xml:lang="en"><![CDATA[Reproductive characteristics of nine varieties of poinsettia (Euphorbia pulcherrima, Willd. ex Klotzch)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas Araujo]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Andrade-Rodríguez]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villegas-Torres]]></surname>
<given-names><![CDATA[Óscar Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo-Gutiérrez]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Colinas-León]]></surname>
<given-names><![CDATA[María Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Avitia-García]]></surname>
<given-names><![CDATA[Edilberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alia-Tejacal]]></surname>
<given-names><![CDATA[Irán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del estado de Morelos Posgrado en Ciencia Agropecuarias y Desarrollo Rural Facultad de Ciencias Agropecuarias]]></institution>
<addr-line><![CDATA[Cuernavaca Morelos]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Chapingo Departamento de Fitotecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<volume>8</volume>
<numero>2</numero>
<fpage>295</fpage>
<lpage>306</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342017000200295&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342017000200295&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342017000200295&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen México es el centro de origen de la nochebuena (Euphorbia pulcherrima, Willd. ex Klotzch), no obstante, la producción depende de las variedades generadas en otros países porque no se tienen variedades nacionales. Para el mejoramiento genético de cualquier especie es necesario el estudio de la biología reproductiva. Con base en lo anterior, el objetivo de la presente investigación fue evaluar la reproducción de tres variedades de nochebuena de sol (Belén, Juan Pablo, Amanecer navideño) y seis cultivares de sombra (Freedom, Prestige, Ice punch, Nutcracker white, Sonora White glitter y Burgundy) para definir las bases de métodos de mejoramiento genético. Se determinó la viabilidad del polen mediante tinción con aceto-carmín y germinación de polen; se estudió el horario en que las flores estuvieron receptivas, aplicando una gota de H2O2 sobre el estigma; se establecieron cuatro tratamientos para determinar el tipo de polinización de las plantas de nochebuena. La investigación fue desarrollada en un diseño completamente al azar. Se realizó un análisis de varianza y una prueba de comparación de medias con la prueba Tukey (p&#8804; 0.05). La viabilidad del polen varió de 68 a 93%. La mayor receptividad del estigma se observó a las 14:00 h. Las variedades de sol podrían fungir como hembras en un programa de fitomejoramiento por tener mayor viabilidad del polen, flores receptivas, y amarre de fruto. Las variedades Nutcraker white y Prestige no presentaron receptividad del estigma ni amarre de fruto. Se determinó que el tipo de polinización de la nochebuena fue cruzada.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Mexico is the center of origin of the poinsettia (Euphorbia pulcherrima, Willd. ex Klotzch), however, production depends on the varieties generated in other countries because they do not have national varieties. For genetic improvement of any kind study of reproductive biology is necessary. Based on the above, the objective of this research was to evaluate the reproduction of three varieties of poinsettia of sun (Bethlehem, John Paul, Christmas Dawn) and six cultivars of shadow (Freedom, Prestige, Ice Punch, Nutcracker white, Sonora White glitter and Burgundy) to define the bases of breeding methods. The viability of pollen was determined by staining with aceto-carmine and pollen germination; the schedule was studied when the flowers were receptive, applying a drop of H2O2 on stigma; four treatments were established to determine the type of pollination of the poinsettia plants. The research was developed in a completely randomized design. An analysis of variance and mean comparison test with Tukey test (p&#8804; 0.05). Was performed. The viability of pollen varied from 68 to 93%. The greater receptivity of the stigma was observed at 14:00 h. The sun varieties could act as females in a breeding program because of greater viability of pollen, receptive flowers, and fruit binding. The Nutcraker White and Prestige varieties showed no stigma receptivity or fruit binding. It was determined that the pollination type of the poinsettia was crossed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[nochebuena]]></kwd>
<kwd lng="es"><![CDATA[receptividad del estigma]]></kwd>
<kwd lng="es"><![CDATA[tipo de polinización]]></kwd>
<kwd lng="es"><![CDATA[viabilidad del polen]]></kwd>
<kwd lng="en"><![CDATA[poinsettia]]></kwd>
<kwd lng="en"><![CDATA[stigma receptivity]]></kwd>
<kwd lng="en"><![CDATA[type of pollination]]></kwd>
<kwd lng="en"><![CDATA[pollen viability]]></kwd>
</kwd-group>
</article-meta>
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