<?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>2346-3775</journal-id>
<journal-title><![CDATA[Tropical Grasslands-Forrajes Tropicales]]></journal-title>
<abbrev-journal-title><![CDATA[Trop. Grassl.-Forrajes Trop.]]></abbrev-journal-title>
<issn>2346-3775</issn>
<publisher>
<publisher-name><![CDATA[Centro Internacional de Agricultura Tropical (CIAT)]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2346-37752017000300153</article-id>
<article-id pub-id-type="doi">10.17138/tgft(5)153-162</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Evaluation and strategies of tolerance to water stress in Paspalum germplasm]]></article-title>
<article-title xml:lang="es"><![CDATA[Evaluación y estrategias de tolerancia a estrés hídrico en germoplasma de Paspalum]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[PEZZOPANE]]></surname>
<given-names><![CDATA[CRISTIANA DE G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[LIMA]]></surname>
<given-names><![CDATA[ARTHUR G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[DA CRUZ]]></surname>
<given-names><![CDATA[PEDRO G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[BELONI]]></surname>
<given-names><![CDATA[TATIANE]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[FÁVERO]]></surname>
<given-names><![CDATA[ALESSANDRA P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[SANTOS]]></surname>
<given-names><![CDATA[PATRÍCIA M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Universitário Central Paulista  ]]></institution>
<addr-line><![CDATA[São Carlos SP]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade Estadual Paulista (UNESP)  ]]></institution>
<addr-line><![CDATA[Rio Claro SP]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Embrapa Rondônia  ]]></institution>
<addr-line><![CDATA[Porto Velho RO]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidade Federal de São Carlos  ]]></institution>
<addr-line><![CDATA[Araras SP]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Embrapa Pecuária Sudeste  ]]></institution>
<addr-line><![CDATA[São Carlos SP]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>5</volume>
<numero>3</numero>
<fpage>153</fpage>
<lpage>162</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S2346-37752017000300153&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S2346-37752017000300153&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S2346-37752017000300153&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The evaluation of genetic resources in germplasm banks of Paspalum can contribute to their use in breeding programs and for advanced research in biotechnology. This study evaluated the tolerance of 11 Paspalum accessions to abiotic stress caused by soil water deficit in a greenhouse experiment at Embrapa Pecuária Sudeste, São Carlos, state of São Paulo, Brazil. The variables analyzed were: dry biomass of green matter, dead matter and roots; leaf area; leaf water potential; number of days to lose leaf turgor (wilting); soil moisture at wilting; and number of tillers per pot. The results showed high genetic variability for all traits, not only among species but also within species, and also reflected the existence of different strategies of response and potential adaptation to water deficit events. For breeding programs, when the aim is to produce materials better adapted to the occurrence of prolonged drought, 5 accessions from this group seem to have good potential: P. malacophyllum BGP 289, P. quarinii BGP 229, P. regnellii BGP 112, P. conspersum BGP 402 and P. urvillei x P. dilatatum BGP 238. Conversely, when the goal is to select materials for short-term water stress conditions, 6 accessions stand out: P. atratum BGP 308, P. regnellii BGP 215, 248 and 397, P. dilatatum BGP 234 and P. malacophyllum BGP 293.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La evaluación de recursos genéticos en bancos de germoplasma de Paspalum constituye una gran ayuda en programas de mejoramiento genético y de investigación avanzada en biotecnología. En un experimento en macetas en Embrapa Pecuária Sudeste, São Carlos, estado de São Paulo, Brasil, se evaluó la tolerancia de 11 accesiones de varias especies de Paspalum al estrés abiótico causado por el déficit hídrico en el suelo. Las variables analizadas fueron: biomasa seca de la materia verde, materia muerta y raíces; área foliar; potencial hídrico foliar; número de días hasta la pérdida de la turgencia foliar (marchitamiento); humedad del suelo al momento del marchitamiento de las plantas; y número de brotes por planta. Los resultados mostraron tanto una alta variabilidad genética para todos los parámetros, no solo entre las especies, sino también dentro de las especies, como la existencia de diferentes estrategias de respuesta y potencial adaptación a eventos de déficit hídrico. Para los programas de fitomejoramiento, cuando el objetivo es producir materiales mejor adaptados a la sequía prolongada, las accesiones con mayor potencial fueron: P. malacophyllum BGP 289, P. quarinii BGP 229, P. regnellii BGP 112, P. conspersum BGP 402 y P. urvillei xP. dilatatum BGP 238. Por el contrario, cuando el objetivo es seleccionar materiales para condiciones de estrés hídrico de corta duración, se destacan las accesiones: P. atratum BGP 308, P. regnellii BGP 215, 248 y 397, P. dilatatum BGP 234 y P. malacophyllum BGP 293.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Abiotic stress]]></kwd>
<kwd lng="en"><![CDATA[genotypes]]></kwd>
<kwd lng="en"><![CDATA[germplasm bank]]></kwd>
<kwd lng="en"><![CDATA[water deficit]]></kwd>
<kwd lng="es"><![CDATA[Banco de germoplasma]]></kwd>
<kwd lng="es"><![CDATA[déficit hídrico]]></kwd>
<kwd lng="es"><![CDATA[estrés abiótico]]></kwd>
<kwd lng="es"><![CDATA[genotipos]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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