<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342020000100097</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v11i1.1763</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Habilidad competitiva de razas de roya de la hoja provenientes de trigos cristalinos]]></article-title>
<article-title xml:lang="en"><![CDATA[Competitive ability of breeds of leaf rust from of crystalline wheats]]></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[Singh]]></surname>
<given-names><![CDATA[Ravi]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villaseñor Mir]]></surname>
<given-names><![CDATA[Héctor Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez García]]></surname>
<given-names><![CDATA[María Florencia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solís Moya]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espitia Rangel]]></surname>
<given-names><![CDATA[Eduardo]]></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 Campo Experimental Valle de México ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Internacional de Mejoramiento de Maíz y Trigo  ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Campo Experimental Bajío ]]></institution>
<addr-line><![CDATA[Celaya Guanajuato]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>1</numero>
<fpage>97</fpage>
<lpage>109</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342020000100097&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342020000100097&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342020000100097&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En el proceso de mejoramiento genético de trigo, la evaluación de genotipos por resistencia a royas es fundamental, se tienen que mezclar distintas razas; sin embargo, es primordial conocer su habilidad competitiva y en que genotipo se deben incrementar; por lo que el objetivo del estudio fue medir la habilidad competitiva de cuatro razas de roya de la hoja causada por Puccinia triticina E. que atacan trigos cristalinos (Triticum durum). El estudio se realizó en invernadero durante el año 2015. Las razas BBG/BN, BCG/BN, BBG/BP y CBG/BP, fueron mezcladas y multiplicadas por tres generaciones sucesivas en genotipos susceptibles (Atil C2001 y Morocco), genotipos resistentes (Samayoa C2004 y Thatcher-Lr16 (RL6005)) además de Júpare C2001 resistente a BBG/BN y BCG/BN, pero susceptible a BBG/BP y CBG/BP. Después de la reproducción de urediniosporas, se obtuvieron 100 aislamientos que se incrementaron en Morocco y se procedió a la identificación. La raza identificada con más frecuencia fue CBG/BP con 46%, seguida de BBG/BP con 34% y BBG/BN con 18%, mientras que BCG/BN fue la menos frecuente con 2%. Solo en urediniosporas del compuesto masal (CM) obtenidos de RL6005 y Morocco permitió identificar las cuatro razas, en Atil C2001, Júpare C2001 y Samayoa C2004 solo se identificaron tres. La raza identificada con más frecuencia en Atil C2001, RL6005 y Samayoa C2004 fue BBG/BP, mientras que en Morocco y Júpare C2001, fue CBG/BP. Se concluye que CBG/BP es más competitiva que BBG/BP, BBG/BN y BCG/BN y se recomienda usarse en la mezcla.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The members of the genus begomovirus are transmitted by Bemisia tabaci and cause severe losses in cucurbitaceae. The objectives of the study were: i) to investigate the etiology of the disease caused by the pumpkin leaf curly virus; ii) know the population dynamics of the vector, compare the effectiveness of yellow sticky traps against yellow trays and determine the effect of the location of the traps, in monitoring B. tabaci during the crop development cycle; and iii) study the spatio-temporal distribution and severity of pumpkin virosis. The study was carried out in the experimental station of the Superior Agricultural College of the State of Guerrero, located in the Cocula Valley, Guerrero, Mexico. DNA was extracted from pumpkin leaves (Cucurbita pepo) var. Gray Zucchini with symptoms of virosis. The PCR was carried out in five samples with the generic oligonucleotides for begomoviruses, two PCR products were sequenced and a phylogenetic tree was generated. Pumpkin virus transmission test was performed, under controlled conditions. The population dynamics of B. tabaci was determined using sticky yellow traps and yellow trays. From the symptomatology, the severity percentage and the area under the disease progress curve (ABCPE) were obtained. PCR analysis, sequencing and phylogeny, confirmed the presence of the SLCV virus (KX620945.1-DAAV-1) in pumpkin. It was found that B. tabaci transmits to SLCV that significantly reduces plant growth. The sticky trap and sampling date influence the population fluctuation of B. tabaci. The incidence of B. tabaci and severity of SLCV were manifested in all the phenological stages of the crop and related to the temperature level.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aislamientos monopostulares]]></kwd>
<kwd lng="es"><![CDATA[competencia entre razas]]></kwd>
<kwd lng="es"><![CDATA[razas de roya de la hoja]]></kwd>
<kwd lng="en"><![CDATA[competition between races]]></kwd>
<kwd lng="en"><![CDATA[leaf rust races,monopostular isolates]]></kwd>
</kwd-group>
</article-meta>
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