<?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>0187-7380</journal-id>
<journal-title><![CDATA[Revista fitotecnia mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. fitotec. mex]]></abbrev-journal-title>
<issn>0187-7380</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Fitogenética A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-73802020000100113</article-id>
<article-id pub-id-type="doi">10.35196/rfm.2020.1.113</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diversidad genética en dos huertos semilleros de Pinus patula Schiede ex SchltdL. et Cham.]]></article-title>
<article-title xml:lang="en"><![CDATA[Genetic diversity at two seed orchards of Pinus patula SCHIEDE ex Schltdl. et Cham.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Méndez-Neri]]></surname>
<given-names><![CDATA[Mónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Herrera]]></surname>
<given-names><![CDATA[Carlos]]></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[Martínez-Trinidad]]></surname>
<given-names><![CDATA[Tomás]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Upton]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[Pedro Antonio]]></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>
<aff id="Af2">
<institution><![CDATA[,Colegio de Postgraduados Campus Puebla ]]></institution>
<addr-line><![CDATA[Cholula Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2020</year>
</pub-date>
<volume>43</volume>
<numero>1</numero>
<fpage>113</fpage>
<lpage>119</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-73802020000100113&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-73802020000100113&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-73802020000100113&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La diversidad genética es importante en los huertos semilleros para producir plantas con alta capacidad de adaptación a cambios ambientales; por lo tanto, el objetivo del presente estudio fue evaluar la diversidad y estructura genética de dos huertos semilleros asexuales de Pinus patula y determinar el grado de diferenciación de cada huerto. El primer huerto se localiza en el ejido La Selva, municipio de Huayacocotla, Veracruz, México y el segundo en el ejido Villa Cuauhtémoc, municipio de Chignahuapan, Puebla, México. Cada huerto se estableció con árboles clonados fenotípicamente superiores seleccionados en su propia área. Muestras de follaje se recolectaron de un rameto de cada clon en ambos huertos semilleros. Los marcadores moleculares de microsatélite NZPR1078, NZPR114, NZPR5, PtTX2123, PtTX2146, PtTX3107 y PtTX3127 se usaron para realizar el análisis de diversidad genética. El número promedio de alelos por locus fue 9.9 para ambos huertos semilleros. La heterocigosidad observada y la esperada fueron 0.602 y 0.693, respectivamente. El índice de fijación fue 0.125. Un déficit de heterocigotos se encontró cuando los dos huertos semilleros se analizaron en conjunto (FIT = 0.125) y dentro de cada uno de estos (FIS = 0.105). El índice de diferenciación fue bajo (FST = 0.023). La mayor parte de la diversidad genética se encontró dentro de los huertos con sólo 4.5 % entre éstos. La diversidad genética fue alta en los huertos asexuales de P. patula con deficiencias moderadas de heterocigotos y un nivel bajo de diferenciación entre ambos huertos semilleros.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary Genetic diversity is important in seed orchards to produce plants with high capability of adaptation to environmental changes; thus, the objective of this study was to evaluate the genetic diversity and structure of two asexual seed orchards of Pinus patula and to determine the degree of differentiation of each orchard. The first orchard is located at common land La Selva, municipality of Huayacocotla, Veracruz, Mexico and the second one at common land Villa Cuauhtémoc, municipality of Chignahuapan, Puebla. Mexico. Each orchard was established with phenotypically superior cloned trees selected in their own area. Foliage samples were collected from one ramet from each clone in both orchards. Microsatellite molecular markers NZPR114, NZPR5, PtTX2123, PtTX2146, PtTX3107 and PtTX3127 were used to perform the genetic diversity analysis. The average number of alleles per locus was 9.9 for both seed orchards. The observed and expected heterozygosities were 0.602 and 0.693, respectively. The fixation index was 0.125. A deficit of heterozygotes was found when both seed orchards were analyzed jointly (FIT = 0.125) and within each of the orchards (FIS = 0.105). The differentiation index was low (FST = 0.023). Most of the genetic diversity was found within the orchards with only 4.5 % between them. The genetic diversity was high in the asexual orchards of P. patula with moderate deficiency of heterozygotes and low level of differentiation between both seed orchards.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Estructura genética]]></kwd>
<kwd lng="es"><![CDATA[heterocigosidad]]></kwd>
<kwd lng="es"><![CDATA[índice de fijación]]></kwd>
<kwd lng="es"><![CDATA[microsatélites]]></kwd>
<kwd lng="en"><![CDATA[Fixation index]]></kwd>
<kwd lng="en"><![CDATA[genetic structure]]></kwd>
<kwd lng="en"><![CDATA[heterozygosity]]></kwd>
<kwd lng="en"><![CDATA[microsatellites]]></kwd>
</kwd-group>
</article-meta>
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