<?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>2310-3469</journal-id>
<journal-title><![CDATA[Revista Cubana de Ciencias Forestales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev cubana ciencias forestales]]></abbrev-journal-title>
<issn>2310-3469</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Pinar del Río Hermanos Saíz Montes de Oca]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2310-34692022000100059</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización morfo-fisiológica y respuesta germinativa de semillas de Delonix regia (Bojer) raf. sometidas a diferentes tratamientos pregerminativos]]></article-title>
<article-title xml:lang="pt"><![CDATA[Caracterização morfofisiológica e resposta germinativa das sementes de Delonix regia (Bojer) raf. sujeitas a diferentes tratamentos pré-germinativos]]></article-title>
<article-title xml:lang="en"><![CDATA[Morpho-physiological characterization and germinative response of Delonix regia (Bojer) raf seeds. subjected to different pregerminative treatments]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Veronica Luna]]></surname>
<given-names><![CDATA[Claudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Laura Fontana]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Botánica del Nordeste (IBONE) Cátedra de Silvicultura. Facultad de Ciencias Agrarias Universidad Nacional del Nordeste]]></institution>
<addr-line><![CDATA[Corrientes ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional del Nordeste Estación Experimental Agropecuaria Instituto Nacional de Tecnología Agropecuaria]]></institution>
<addr-line><![CDATA[Corrientes ]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>10</volume>
<numero>1</numero>
<fpage>59</fpage>
<lpage>73</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2310-34692022000100059&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2310-34692022000100059&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2310-34692022000100059&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Delonix regia es una especie que adquirió importancia mundial debido a sus múltiples propiedades y aplicaciones. Esta presenta baja germinación por características propias de la semilla como: permeabilidad de la testa y presencia de inhibidores fenólicos que impide el flujo necesario de agua y oxígeno para desencadenarla. El objetivo del trabajo consistió en caracterizar la morfología y la respuesta germinativa de semillas de D. regia sometidas a diferentes tratamientos pregerminativos. Metodológicamente se aplicó un diseño experimental completamente al azar con cuatro repeticiones de 25 semillas cada uno. Los tratamientos fueron: escarificado físico, mecánico y combinado. En este contexto, se logró establecer la calidad de semillas indicando sus rasgos biométricos y caracterización colorimétrica, que son herramientas ventajosas para utilizarlas como sistemas de clasificación para la especie, ya que se ha determinado el tamaño y el color de las semillas más idóneas para obtener plántulas. En la evaluación de la calidad morfofisiológica de las simientes, se logró la interpretación de pruebas de viabilidad basados en patrones y detección de daños, por métodos destructivos y no destructivos. De los tratamientos pregerminativos considerados en esta investigación, el método de escarificado físico mediante la inmersión de las semillas por 15 minutos en agua a 100 ºC, con enfriamiento en agua a temperatura ambiente, ha influido de manera directa en la mayoría de los parámetros analizados para promover la emergencia de las plántulas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO Delonix regia é uma espécie que adquiriu importância mundial devido a suas múltiplas propriedades e aplicações; mas apresenta deficiências na germinação de suas sementes; devido à variação no processo por suas características intrínsecas (problemas de permeabilidade do testa e presença de inibidores fenólicos), o que impede o fluxo necessário de água e oxigênio para desencadeá-lo. O objetivo deste estudo era caracterizar a morfologia e a resposta germinativa das sementes D. regia submetidas a diferentes tratamentos pré-germinativos. Metodologicamente, foi aplicado um projeto experimental completamente aleatório com quatro réplicas de 25 sementes cada. Os tratamentos foram: físicos, mecânicos e combinados de escarificação. Neste contexto, foi possível estabelecer a qualidade das sementes indicando seus traços biométricos e caracterização colorimétrica, que são ferramentas vantajosas para uso como sistemas de classificação das espécies, uma vez que o tamanho e a cor das sementes mais adequadas para a obtenção das mudas foram determinados. Na avaliação da qualidade morfofisiológica das sementes, foi feita a interpretação dos testes de viabilidade baseados em padrões e detecção de danos por métodos destrutivos e não-destrutivos. Dos tratamentos pré-germinativos considerados nesta pesquisa, o método de escarificação física por imersão das sementes durante 15 minutos em água a 100 ºC, com resfriamento em água à temperatura ambiente, teve uma influência direta na maioria dos parâmetros analisados para promover o surgimento de mudas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Delonix regia is a species with a worldwide importance due to its multiple properties and applications. It has low the germination due seed characteristics like testa permeability and presence of phenolic inhibitors, which inhibits the necessary flow of water and oxygen to enhance the process. The objective of this study was to characterize the morphology and germination response of D. regia seeds subjected to different pre-germination treatments. Methodologically, a completely randomized experimental design with four replicates of 25 seeds each was applied. The treatments were: physical, mechanical and combined scarification. In this context, it was possible to establish the quality of seeds by indicating their biometric traits and colorimetric characterization, which are advantageous tools to be used as classification systems for the species, since the size and color of the most suitable seeds for obtaining seedlings have been determined. In the assessment of the morphophysiological quality of the seeds, the interpretation of viability tests based on patterns and damage detection, by destructive and non-destructive methods, was achieved. Of the pregerminative treatments considered in this research, the physical scarification method by immersing the seeds for 15 minutes in water at 100 ºC, with cooling in water at room temperature, had a direct influence on most of the parameters analyzed to promote seedling emergence.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Dormancia]]></kwd>
<kwd lng="es"><![CDATA[Emergencia]]></kwd>
<kwd lng="es"><![CDATA[Germinación]]></kwd>
<kwd lng="es"><![CDATA[Semillas]]></kwd>
<kwd lng="es"><![CDATA[Viabilidad.]]></kwd>
<kwd lng="pt"><![CDATA[Dormência]]></kwd>
<kwd lng="pt"><![CDATA[Emergência]]></kwd>
<kwd lng="pt"><![CDATA[Germinação]]></kwd>
<kwd lng="pt"><![CDATA[Sementes]]></kwd>
<kwd lng="pt"><![CDATA[Viabilidade.]]></kwd>
<kwd lng="en"><![CDATA[Dormancy]]></kwd>
<kwd lng="en"><![CDATA[Emergence]]></kwd>
<kwd lng="en"><![CDATA[Germination]]></kwd>
<kwd lng="en"><![CDATA[Seeds]]></kwd>
<kwd lng="en"><![CDATA[Viability.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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