<?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>S0187-73802021000300399</article-id>
<article-id pub-id-type="doi">10.35196/rfm.2021.3.399</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Postulación de genes de resistencia a roya de la hoja en progenitores del programa de trigo harinero del INIFAP-CEVAMEX]]></article-title>
<article-title xml:lang="en"><![CDATA[Postulation of leaf rust resistance genes in bread wheat progenitors of the INIFAP-CEVAMEX program]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huerta-Espino]]></surname>
<given-names><![CDATA[Julio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdez-Rodríguez]]></surname>
<given-names><![CDATA[Yerica R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leyva-Mir]]></surname>
<given-names><![CDATA[Santos G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-León]]></surname>
<given-names><![CDATA[Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villaseñor-Mir]]></surname>
<given-names><![CDATA[Héctor E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-García]]></surname>
<given-names><![CDATA[Ma. Florencia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Ceniceros]]></surname>
<given-names><![CDATA[Huizar L.]]></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  ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Chapingo Departamento de Parasitología Agrícola ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,INIFAP  ]]></institution>
<addr-line><![CDATA[Guasave Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,INIFAP  ]]></institution>
<addr-line><![CDATA[Cd. Obregón Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>44</volume>
<numero>3</numero>
<fpage>399</fpage>
<lpage>407</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-73802021000300399&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-73802021000300399&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-73802021000300399&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las royas han sido uno de los mayores problemas del trigo (Triticum spp.) en el mundo, de las cuales, la de la hoja, causada por el hongo Puccinia triticina, es la más común y la más ampliamente distribuida. El uso de variedades resistentes es el método más efectivo y ecológicamente sustentable para su control. El objetivo de este trabajo fue postular los genes de resistencia a roya de la hoja en plántula de genotipos élite y su respuesta a la enfermedad en planta adulta. Se evaluaron 38 genotipos del grupo de progenitores del Programa de Trigo del INIFAP-CEVAMEX, incluyendo variedades y líneas experimentales. Se inocularon 16 razas diferentes de roya de la hoja bajo condiciones de invernadero para ser evaluados en estado de plántula, y la raza MBJ/SP para medir su respuesta en planta adulta en campo e invernadero. Con base en los tipos de infección expresados por los genotipos en estado de plántula, se postuló la presencia de 14 genes: Lr1, 2a, 2c, 3, 9, 10, 13, 14b, 16, 17, 23, 24 y 27+31, solos o en combinación de hasta ocho, teniendo un total de 31 combinaciones diferentes; así mismo, hubo variación en la respuesta en planta adulta. Se identificaron genotipos que combinan genes de resistencia en plántula y planta adulta, presentando mayor resistencia en planta adulta los genotipos de reciente formación, lo que refleja los avances en el mejoramiento mediante la acumulación de genes para el control genético de la roya de la hoja.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary Rusts have been one of the major probles of wheat (Triticum spp.) worldwide, of which the leaf rust, caused by the fungus Puccinia triticina, is the most common and the most widely distributed. The use of resistant varieties is the most effective and ecologically sustainable method for its control. The objective of this study was to postulate the genes for resistance to leaf rust in seedlings of elite genotypes and their response to the disease in adult plants. Thirty-eight genotypes of the group of parents of the INIFAP-CEVAMEX Wheat Program were evaluated, including varieties and experimental lines. Sixteen different races of leaf rust were inoculated under greenhouse conditions to be evaluated at the seedling stage, and the MBJ/SP race was inoculated to evaluate their response in adult plant in field and greenhouse conditions. Based on the infection types expressed by the genotypes at seedling stage, the presence of 14 genes was postulated: Lr1, 2a, 2c, 3, 9, 10, 13, 14b, 16, 17, 23, 24 and 27+31, alone or in combinations of up to eight, having a total of 31 different combinations; likewise, there was variation in the response in adult plants. Genotypes that combine resistance genes at the seedling and adult plant stages were identified, with newly formed genotypes presenting greater resistance in adult plant, reflecting advances in improvement through the accumulation of genes for the genetic control of leaf rust.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Puccinia triticina]]></kwd>
<kwd lng="es"><![CDATA[Triticum aestivum]]></kwd>
<kwd lng="es"><![CDATA[genes Lr]]></kwd>
<kwd lng="en"><![CDATA[Puccinia triticina]]></kwd>
<kwd lng="en"><![CDATA[Triticum aestivum]]></kwd>
<kwd lng="en"><![CDATA[Lr genes]]></kwd>
</kwd-group>
</article-meta>
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