<?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>0185-3309</journal-id>
<journal-title><![CDATA[Revista mexicana de fitopatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fitopatol]]></abbrev-journal-title>
<issn>0185-3309</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Fitopatología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-33092016000300223</article-id>
<article-id pub-id-type="doi">10.18781/r.mex.fit.1603-2</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Germinación de esclerocios y formación de ascoporas de Claviceps gigantea Fuentes, De la Isla, Ullstrup y Rodríguez]]></article-title>
<article-title xml:lang="en"><![CDATA[Sclerotial germination and ascospore formation of Claviceps gigantea Fuentes, De la Isla, Ullstrup y Rodríguez]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno-Manzano]]></surname>
<given-names><![CDATA[Celeste E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[De León-García de Alba]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nava-Díaz]]></surname>
<given-names><![CDATA[Cristian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Pale]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Montecillo ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de México  ]]></institution>
<addr-line><![CDATA[Toluca ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<volume>34</volume>
<numero>3</numero>
<fpage>223</fpage>
<lpage>241</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-33092016000300223&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-33092016000300223&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-33092016000300223&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resúmen. La enfermedad &#8220;diente de caballo&#8221; del maíz (Claviceps gigantea) afecta hasta 90 % del grano. Se estudiaron condiciones para germinación de esclerocios, formación de estructuras sexuales y se describe parte del ciclo del hongo en laboratorio y campo. Se estableció un diseño con sustrato y tiempo de incubación a 4 °C. Se evaluaron porcentaje de esclerocios germinados, tiempo de germinación y formación de cabezuelas estromáticas. En laboratorio, los esclerocios germinaron solamente en carbón residual después de 3 meses a 4 °C y 2 meses a 22-24 °C de incubación resultando en 55 % de germinación. Esclerocios germinados producen en promedio cinco cabezuelas por esclerocio 15 d después de la aparición de los primordios. En campo, los primordios aparecieron cuando los esclerocios se incubaron 3 meses a 4 °C y 64 d a temperatura promedio de 14.07 °C. En campo y laboratorio, la liberación de ascosporas se observó 23 d después de aparecer de los primordios. La aparición de cabezuelas estromáticas, su desarrollo y maduración en el mismo esclerocio no fué sincronizado. Se documentó la liberación de ascosporas largas y delgadas emergiendo de cabezuelas estromáticas. El patógeno se identificó morfológica y molecularmente como Claviceps gigantea.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract. The disease known as &#8220;horse&#8217;s tooth&#8221; in maize (Claviceps gigantea) can affect grain yield up to 90 %. In this research, the time of sclerotial germination and the development of the sexual structures were studied in field and laboratory. A design was implemented with substrate and time of incubation at 4 °C as factors. Percent of germinated sclerotia, time of germination, and formation of stromatic heads were evaluated. In laboratory, sclerotia germinated only when on residual charcoal, incubated for 3 months at 4 °C followed by 2 months at 22.24 °C, resulting in 55 % germination. Sclerotia germinated produced an average of five heads per sclerotium 15 d after primordial were produced. In field conditions, the primordial appeared after the sclerotia were incubated for 3 months at 4 °C and 64 d at an average temperature of 14.07 °C. In both types of sclerotia, primordia released thin, elongated ascospores after 23 d, showing that the appearance of primordia and maturity did not occur at the same time. Ascospores release from the stromatic heads was documented. The pathogen was identified morphologically and molecularly as Claviceps gigantea.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Diente de caballo en maíz]]></kwd>
<kwd lng="es"><![CDATA[clavicipitales]]></kwd>
<kwd lng="es"><![CDATA[identificación-morfológica]]></kwd>
<kwd lng="es"><![CDATA[biología de patógenos]]></kwd>
<kwd lng="en"><![CDATA[Horses&#8217;s tooth disease]]></kwd>
<kwd lng="en"><![CDATA[maize]]></kwd>
<kwd lng="en"><![CDATA[claviceps]]></kwd>
<kwd lng="en"><![CDATA[morphological indentification]]></kwd>
<kwd lng="en"><![CDATA[pathogens biology]]></kwd>
</kwd-group>
</article-meta>
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