<?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>2007-4018</journal-id>
<journal-title><![CDATA[Revista Chapingo serie ciencias forestales y del ambiente]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Chapingo ser. cienc. for. ambient]]></abbrev-journal-title>
<issn>2007-4018</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Chapingo, Coordinación de Revistas Institucionales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-40182017000200221</article-id>
<article-id pub-id-type="doi">10.5154/r.rchscfa.2016.05.029</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Hardening of Pinus oaxacana Mirov seedlings under irrigation management in nursery]]></article-title>
<article-title xml:lang="es"><![CDATA[Endurecimiento de plántulas de Pinus oaxacana Mirov con manejo del riego en vivero]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ávila-Angulo]]></surname>
<given-names><![CDATA[María L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aldrete]]></surname>
<given-names><![CDATA[Arnulfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-Hernández]]></surname>
<given-names><![CDATA[J. Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Guerrero]]></surname>
<given-names><![CDATA[Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Hernández]]></surname>
<given-names><![CDATA[Víctor A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velázquez-Martínez]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<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>08</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2017</year>
</pub-date>
<volume>23</volume>
<numero>2</numero>
<fpage>221</fpage>
<lpage>229</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40182017000200221&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40182017000200221&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40182017000200221&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Plants should undergo a hardening process in the nursery to improve the survival of forest plantations in degraded areas.  Purpose of the study:  The effect of three levels of irrigation was evaluated in the hardening stage on some morphological and physiological variables of Pinus oaxacana.  Materials and Methods:  The treatments evaluated were three levels of irrigation and a control treatment. Irrigation was performed when the containers reduced their saturation weight by 30 % (frequent), 40-45% (medium) and 45-50% (low); in the control treatment, irrigation was applied every two or three days. The study used a randomized complete block design; each treatment consisted of 100 plants.  Results and Discussion:  Morphological indicators with significant differences (P &#8804; 0.05) among treatments were root collar diameter, shoot dry weight, and total dry weight. The physiological indicators using the root growth potential test showed no significant differences. Plants with frequent irrigation had greater diameter, shoot dry weight, and total dry weight.  Conclusions:  A reduction of irrigation between 30 to 45 % in P. oaxacana allows the production of hardened plants, with greater possibility of success at the time of transplantation in the field.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: Las plantas deben someterse a un proceso de endurecimiento en el vivero para mejorar la supervivencia de las plantaciones forestales en áreas degradadas.  Objetivo:  El efecto de tres niveles de riego se evaluó en la etapa de endurecimiento sobre algunas variables morfológicas y fisiológicas de Pinus oaxacana.  Materiales y métodos:  Los tratamientos evaluados fueron tres niveles de riego más un testigo. El riego se realizó cuando los tubetes reducían su peso de saturación 30 % (frecuente), 40 a 45 % (medio) y 45 a 50 % (escaso); en el testigo, el riego se aplicó cada dos o tres días. El experimento se estableció en un diseño de bloques completos al azar; cada tratamiento constó de 100 plantas.  Resultados y discusión:  Los indicadores morfológicos con diferencias significativas (P &#8804; 0.05) entre tratamientos fueron diámetro del cuello de la raíz, peso seco de vástago y peso seco total. Los indicadores fisiológicos mediante la prueba de potencial de crecimiento de raíz no presentaron diferencias significativas. Las plantas con riego frecuente obtuvieron el mayor diámetro, peso seco del vástago y peso seco total.  Conclusiones:  Una reducción del riego entre 30 a 45 % en P. oaxacana permite la producción de plantas endurecidas, con mayor posibilidad de éxito al momento de su trasplante en campo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[water stress]]></kwd>
<kwd lng="en"><![CDATA[root growth potential]]></kwd>
<kwd lng="en"><![CDATA[seedling quality]]></kwd>
<kwd lng="en"><![CDATA[irrigation frequency]]></kwd>
<kwd lng="es"><![CDATA[Estrés hídrico]]></kwd>
<kwd lng="es"><![CDATA[potencial de crecimiento de raíz]]></kwd>
<kwd lng="es"><![CDATA[calidad de planta]]></kwd>
<kwd lng="es"><![CDATA[frecuencia de riego]]></kwd>
</kwd-group>
</article-meta>
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