<?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>S2007-40182021000300481</article-id>
<article-id pub-id-type="doi">10.5154/r.rchscfa.2020.10.064</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Morphological, physical and chemical analysis of acorns from three oak species from Durango, Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Caracterización morfológica, física y química de bellotas de tres especies de encino del estado de Durango, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Roacho]]></surname>
<given-names><![CDATA[Raymundo F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero-Cervantes]]></surname>
<given-names><![CDATA[Maribel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prieto-Ruíz]]></surname>
<given-names><![CDATA[José Á.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bocanegra-Salazar]]></surname>
<given-names><![CDATA[Melissa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chávez-Simental]]></surname>
<given-names><![CDATA[Jorge A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Goche-Télles]]></surname>
<given-names><![CDATA[José R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Juárez del Estado de Durango  ]]></institution>
<addr-line><![CDATA[Durango Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Juárez del Estado de Durango  ]]></institution>
<addr-line><![CDATA[Durango Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Juárez del Estado de Durango  ]]></institution>
<addr-line><![CDATA[Durango Durango]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Juárez del Estado de Durango  ]]></institution>
<addr-line><![CDATA[Durango Durango]]></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>27</volume>
<numero>3</numero>
<fpage>481</fpage>
<lpage>495</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-40182021000300481&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-40182021000300481&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-40182021000300481&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  In Mexico, there is a lack of information on morphological, physical and chemical characteristics of acorns of Quercus, which makes it difficult to make decisions on the use that can be made to the fruits.  Objectives:  To identify the morphological, physical and chemical characteristics of Quercus rugosa Née, Q. sideroxyla Humb. &amp; Bonpl. and Q. deserticola Trel. acorns.  Materials and methods:  From each species, 10 trees were selected and 30 acorns per tree were collected. Mature acorns were characterized morphologically (polar and equatorial diameter, shell weight and total weight) and in physicochemical characterization (moisture, dry matter, ash, crude fiber and protein, ethereal extract and tannins) green and mature acorns were used. Differences among species and among maturity stages were determined with an analysis of variance (P &#8804; 0.05) and subsequent Tukey's test.  Results and discussion:  Morphology varied among species and among trees of the same species (P &lt; 0.05); Q. deserticola had the largest acorn size (15.69 mm) and weight (1.94 g), and Q. sideroxyla produced the smallest acorns. Maturity stage and species significantly (P &lt; 0.05) influenced chemical composition; mature acorns had higher content of ethereal extract (8.88 %) and protein (8.40 %). Pearson's correlation indicated that acorn weight was strongly associated with crown diameter and diameter at breast height.  Conclusion:  Significant differences were found in morphology and chemical composition of acorns of each species, although they inhabit sites with similar characteristics.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción:  En México se carece de información sobre las características morfológicas, físicas y químicas de las bellotas del género Quercus, lo cual dificulta tomar decisiones sobre el uso que pueda darse a los frutos.  Objetivos:  Caracterizar morfológica, física y químicamente bellotas de Quercus rugosa Née, Q. sideroxyla Humb. &amp; Bonpl. y Q. deserticola Trel.  Materiales y métodos.  De cada especie se seleccionaron 10 árboles y se colectaron 30 bellotas por árbol. Las bellotas maduras se caracterizaron morfológicamente (diámetro polar y ecuatorial, peso de la cáscara y peso total) y en la caracterización fisicoquímica (humedad, materia seca, cenizas, fibra y proteína crudas, extracto etéreo y taninos) se utilizaron bellotas verdes y maduras. Las diferencias entre especies y entre estados de madurez se determinaron con análisis de varianza (P &#8804; 0.05) y posterior prueba de Tukey.  Resultados y discusión:  La morfología varió entre especies y entre árboles de la misma especie (P &lt; 0.05); Q. deserticola tuvo bellotas de mayor tamaño (15.69 mm) y peso (1.94 g), y Q. sideroxyla produjo las más pequeñas. El estado de madurez y la especie influyeron significativamente (P &lt; 0.05) en la composición química; las bellotas maduras tuvieron mayor contenido de extracto etéreo (8.88 %) y proteína (8.40 %). La correlación de Pearson indicó que el peso de la bellota se asoció en mayor grado con el diámetro de copa y diámetro normal.  Conclusión:  Existen diferencias notables en la morfología y en la composición química de las bellotas de cada especie, pese a que habitan en sitios con características similares.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Quercus deserticola]]></kwd>
<kwd lng="en"><![CDATA[Quercus sideroxyla]]></kwd>
<kwd lng="en"><![CDATA[Quercus rugosa]]></kwd>
<kwd lng="en"><![CDATA[morphological variation]]></kwd>
<kwd lng="en"><![CDATA[acorn maturity]]></kwd>
<kwd lng="es"><![CDATA[Quercus deserticola]]></kwd>
<kwd lng="es"><![CDATA[Quercus sideroxyla]]></kwd>
<kwd lng="es"><![CDATA[Quercus rugosa]]></kwd>
<kwd lng="es"><![CDATA[variación morfológica]]></kwd>
<kwd lng="es"><![CDATA[madurez de bellotas]]></kwd>
</kwd-group>
</article-meta>
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