<?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>2007-1132</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias forestales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. forestales]]></abbrev-journal-title>
<issn>2007-1132</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11322021000600202</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v12i68.1104</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación cuantitativa de la germinación de Quercus variabilis Blume en tres tamaños de semilla]]></article-title>
<article-title xml:lang="en"><![CDATA[Quantitative assessment of Quercus variabilis Blume germination in three seed sizes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[Jorge Méndez]]></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 Centro Nacional de Investigación Disciplinaria en Conservación y Mejoramiento de Ecosistemas Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro Departamento Forestal ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>12</volume>
<numero>68</numero>
<fpage>202</fpage>
<lpage>211</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322021000600202&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322021000600202&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322021000600202&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Quercus variabilis es un taxón de amplia distribución en el este de Asia y sus bosques tienen un rol importante en la conservación y mejoramiento del agua y el suelo; no obstante, los problemas ecológicos (pérdida de diversidad, reducción de áreas naturales), el cambio climático, y la erosión del suelo han propiciado la destrucción de sus poblaciones. Conocer el proceso de germinación de las especies contribuye a incrementar la supervivencia de las plántulas en los proyectos de reforestación. Para determinar seis parámetros germinativos de Q. variabilis se trabajó con información de tres tamaños de semillas (pequeña: 2.88 ± 0.09 g, mediana: 4.18 ±0.10 g y grande: 5.52 ±0.27 g), recolectada de 20 individuos en Jiaozuo, provincia de Henan, China, en 2013. El análisis determinó que las semillas grandes y medianas presentaron alto porcentaje de germinación final (GF= 96 y 93 %, respectivamente) pero sin diferencia significativa (&#961;=0.9983), menor tiempo promedio de germinación (TPG= 20 días) y mayor índice de tasa de germinación (ITG= 5.4 y 5.1 % día-1, respectivamente) que las semillas pequeñas (GF=39 %, TPG=24 días, ITG = 1.8 % día-1); asimismo, las semillas grandes y medianas tuvieron valores altos de tasa media de germinación (TMG= 0.05 dia-1) y coeficiente de velocidad de germinación (CVG= 5.0 y 4.9 %) que las pequeñas (TMG=0.04 día-1 y CVG=4.2 %). Los resultados obtenidos sugieren que los parámetros germinativos varían con el tamaño de la semilla, lo que es necesario considerar durante la producción de planta en vivero.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Quercus variabilis is a species with a wide distribution in East Asia and its forests play an important role in the conservation and improvement of water and soil. However, ecological problems (loss of diversity and reduction of natural areas), and climate change and soil erosion, have damaged their populations. Knowing the germination process of the species help to increase the survival of the seedlings in reforestation projects. To determine six germination parameters of Q. variabilis, information from three seed sizes was used (small: 2.88 ± 0.09 g, medium: 4.18 ± 0.10 g and large: 5.52 ± 0.27 g), collected from 20 trees in Jiaozuo, Henan province, China, in 2013. The analysis determined that the large and medium seeds presented a high percentage of final germination (FG=96 and 93 %, respectively) but without significant deference (&#961;=0.9983), shorter average germination time (AGT=20 days) and higher index of germination rate (GRI=5.4 and 5.1 % day-1, respectively) than small seeds (FG = 39 %, AGT = 24 days, GRI = 1.8 % day-1). Likewise, large and medium seeds had higher values of mean germination rate (MGR=0.05 day-1) and germination speed coefficient (GSC=5.0 and 4.9 %) than small seeds (MGR=0.04 day-1 and GSC=4.2 %). Results suggested that the germination parameters vary with the size of the seed, a fact that must be taken into account during the seedling production at the nursery.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Encino]]></kwd>
<kwd lng="es"><![CDATA[germinación]]></kwd>
<kwd lng="es"><![CDATA[germoplasma]]></kwd>
<kwd lng="es"><![CDATA[parámetro germinativo]]></kwd>
<kwd lng="es"><![CDATA[peso fresco de semilla]]></kwd>
<kwd lng="es"><![CDATA[producción de plántula]]></kwd>
<kwd lng="en"><![CDATA[Oak]]></kwd>
<kwd lng="en"><![CDATA[germination]]></kwd>
<kwd lng="en"><![CDATA[germplasm]]></kwd>
<kwd lng="en"><![CDATA[germination parameter]]></kwd>
<kwd lng="en"><![CDATA[seed fresh weight]]></kwd>
<kwd lng="en"><![CDATA[seedling production]]></kwd>
</kwd-group>
</article-meta>
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