<?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>0871-018X</journal-id>
<journal-title><![CDATA[Revista de Ciências Agrárias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. de Ciências Agrárias]]></abbrev-journal-title>
<issn>0871-018X</issn>
<publisher>
<publisher-name><![CDATA[Sociedade de Ciências Agrárias de Portugal]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0871-018X2024000100271</article-id>
<article-id pub-id-type="doi">10.19084/rca.34864</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[En busca de la variabilidad de la mala hierba para su control con hongos castradores]]></article-title>
<article-title xml:lang="en"><![CDATA[In search of variability in weeds for their control with castrating fungi]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mas]]></surname>
<given-names><![CDATA[M.T.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Verdú]]></surname>
<given-names><![CDATA[A.M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universitat Politècnica de Catalunya Departament d'Enginyeria Agroalimentària i Biotecnologia ]]></institution>
<addr-line><![CDATA[Barcelona ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2024</year>
</pub-date>
<volume>47</volume>
<numero>1</numero>
<fpage>271</fpage>
<lpage>280</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0871-018X2024000100271&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0871-018X2024000100271&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0871-018X2024000100271&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Son numerosos los ejemplos de parásitos fúngicos endófitos de plantas que pueden impedir que éstas florezcan o produzcan semillas. Entre ellos se encuentran los hongos ustilaginales que pueden generar carbón en las plantas hospedantes. En esta contribución se aborda la interacción entre Digitaria sanguinalis (Ds), una mala hierba importante, y Ustilago syntherismae. Desde 2004 se han seguido ambas poblaciones en una parcela con historial agrícola de Torre Marimon (Caldes de Montbui, Barcelona). En esta aportación se presentan datos del período 2009-2017 de la densidad de individuos de Ds presentes al final del ciclo anual (otoño), obtenida mediante un muestreo regular utilizando cuadrados de 0.25 m2. Se diferenciaron tres fenotipos de acuerdo con las siguientes características morfológicas: a) plantas aparentemente normales con espiguillas en sus inflorescencias; b) plantas completamente castradas con soros (carbón) en su parte apical; y c) plantas (parcialmente castradas, PPC) que presentaban tanto espiguillas como soros en distintos ápices de los hijuelos. Para el período 2011-2014 se presentan datos del potencial reproductivo y la variabilidad interanual (número de inflorescencias con espiguillas/número de soros por individuo) de los tres grupos señalados y se comparan entre ellos. Aunque tanto la densidad media anual de individuos PPC (4.7 i m-2), como su aportación media anual en el número de espiguillas/soros son bajas (31/168 estructuras m-2 respectivamente), se discute brevemente, en el marco del posible uso del hongo como agente de control biológico, la relevancia que pueden tener estos individuos para analizar, desde una perspectiva genética, el tipo de resistencia que presentan.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract There are numerous examples of endophytic fungal parasites of plants that can prevent them from flowering or producing seeds. Among these are Ustilaginales fungi that can cause smut on host plants. This contribution addresses the interaction between Digitaria sanguinalis (Ds), an important weed, and Ustilago syntherismae. Since 2004, both populations have been monitored on a plot with an agricultural past at Torre Marimon (Caldes de Montbui, Barcelona). We present data relating to the 2009-2017 period on the density of Ds individuals present at the end of the annual cycle (autumn), obtained through regular sampling using quadrats of 0.25 m2. Three phenotypes were differentiated according to the following morphological characteristics: a) apparently normal plants with spikelets in their inflorescences; b) completely smutted plants with sori in their apical part; and c) plants (partially smutted, PS) that presented both spikelets and sori in different mainstem/tillers. For the period 2011-2014, data on the reproductive potential and interannual variability (number of inflorescences with spikelets/number of sori per individual) of the three aforementioned groups are presented and compared. Although both the average annual density of PS individuals (4.7 i m-2) and their average annual contribution to the number of spikelets/sori are low (31/168 structures m-2 respectively), we briefly discuss, within the scenario of the possible use of the fungus as a biological control agent, the relevance that these individuals may have for analysing, from a genetic perspective, the type of resistance they present.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Garranchuelo]]></kwd>
<kwd lng="es"><![CDATA[Carbón]]></kwd>
<kwd lng="es"><![CDATA[Fenotipo]]></kwd>
<kwd lng="es"><![CDATA[Resistencia]]></kwd>
<kwd lng="es"><![CDATA[Control biológico]]></kwd>
<kwd lng="en"><![CDATA[Large crabgrass]]></kwd>
<kwd lng="en"><![CDATA[Smut]]></kwd>
<kwd lng="en"><![CDATA[Phenotype]]></kwd>
<kwd lng="en"><![CDATA[Resistance]]></kwd>
<kwd lng="en"><![CDATA[Biological control]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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