<?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>2215-3470</journal-id>
<journal-title><![CDATA[Uniciencia]]></journal-title>
<abbrev-journal-title><![CDATA[Uniciencia]]></abbrev-journal-title>
<issn>2215-3470</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional, Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-34702021000100352</article-id>
<article-id pub-id-type="doi">10.15359/ru.35-1.22</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estimación de parámetros genéticos de Gmelina arborea Roxb. (melina) en el Caribe de Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[Estimation of genetic parameters of Gmelina arborea Roxb. (melina) in the Costa Rican Caribbean]]></article-title>
<article-title xml:lang="pt"><![CDATA[Estimativa de parâmetros genéticos da Gmelina arborea Roxb. (gamelina) no Caribe da Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Castro]]></surname>
<given-names><![CDATA[William]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[Yorleny Badilla]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Murillo-Gamboa]]></surname>
<given-names><![CDATA[Olman]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Instituto de Investigación y Servicios Forestales ]]></institution>
<addr-line><![CDATA[ Heredia]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería Forestal ]]></institution>
<addr-line><![CDATA[ Cartago]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería Forestal ]]></institution>
<addr-line><![CDATA[ Cartago]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>35</volume>
<numero>1</numero>
<fpage>352</fpage>
<lpage>366</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-34702021000100352&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-34702021000100352&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-34702021000100352&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La Gmelina arborea es una de las especies de mayor importancia en proyectos de reforestación comercial en Costa Rica y actualmente, forma parte importante del programa de mejoramiento genético en Costa Rica liderado por GENFORES. El objetivo del presente estudio consistió en determinar los parámetros genéticos de 54 clones de melina utilizados en un ensayo clonal en la región Caribe de Costa Rica. El ensayo se estableció con un diseño de bloques completos al azar con cuatro repeticiones por tratamiento, con un distanciamiento de 4 m x 3 m. Se calcularon parámetros genéticos a los 10, 22 y 34 meses, para las variables diámetro a la altura del pecho (DAP), altura comercial, volumen comercial y calidad del fuste, utilizando el software SELEGEN, el cual se basa en el método REML/BLUP, además, se realizaron correlaciones genéticas entre las variables evaluadas. Los resultados muestran mayor heredabilidad individual en sentido amplio para las variables de volumen comercial y DAP, además, reflejan que la calidad del fuste a los 22 y 34 meses presenta los mayores coeficientes de heredabilidad individual y heredabilidad media del clon. Las correlaciones genéticas reflejan valores altos y positivos entre las variables DAP-volumen comercial y altura comercial-calidad del fuste, a los 34 meses de edad, con un 0.97 y 0.74, respectivamente. Los clones 17 y 34, mostraron ser los mejores en el ranking genético en términos de volumen comercial; el material de control y el clon 19, fueron los que se ubicaron en las últimas posiciones del ranking. Se obtuvo una ganancia genética a los 34 meses de edad de 6.11 % y 9.36 % en DAP y volumen comercial, respectivamente. Se concluye que existe variabilidad genética en los materiales genéticos utilizados, que permiten obtener ganancias genéticas importantes, sobre todo si se utilizan los primeros 10 clones del ranking genético de las accesiones evaluadas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Gmelina arborea is one of the most important species in commercial reforestation projects in Costa Rica and is currently a significant part of the genetic improvement program led nationally by GENFORES. The objective of the present study is to determine the genetic parameters of 54 melina clones used in a clonal trial in the Caribbean region of Costa Rica. The trial was established in a randomized complete block design with four replications per treatment, with a distance of 4m x 3m. Genetic parameters were calculated at 10, 22, and 34 months, for the variables diameter at breast height (DBH), commercial height, commercial volume, and stem quality, using the SELEGEN REML/BLU software. Genetic correlations were also made between the evaluated variables. Results indicated greater individual heritability in the broad sense for the commercial volume and DBH variables. In addition, the quality of the stem at 22 and 34 months presents the highest coefficients of individual heritability and the average heritability of the clone. The genetic correlations reflect high and positive values between the DBH-commercial volume-commercial height-stem quality variables, at 34 months of age, with 0.97 and 0.74, respectively. Clones 17 and 34 showed to be the best in the genetic ranking in terms of commercial volume, while the material control and clone 19 were last in the ranking. A 6.11% and 9.36% genetic gain was obtained at 34 months of age in DBH and commercial volume, respectively. It is concluded that there is genetic variability in the materials used, which allows us to obtain significant genetic gain, especially if using the first 10 clones of the genetic ranking.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo A Gmelina arborea é uma das espécies de maior importância em projetos de reflorestamento comercial na Costa Rica e, atualmente, forma parte importante do programa de melhoramento genético na Costa Rica liderado pela GENFORES. O objetivo do presente estudo consistiu em determinar os parâmetros genéticos de 54 clones de gamelina utilizados em um ensaio clonal na região do Caribe na Costa Rica. O ensaio foi estabelecido com um desenho de blocos completos aleatórios com quatro repetições por tratamento, com uma distância de 4 m x 3 m. Foram calculados parâmetros genéticos aos 10, 22 e 34 meses, para as variáveis diâmetro à altura do peito (DAP), altura comercial, volume comercial e qualidade do fuste, utilizando o software SELEGEN, que se baseia no método REML/BLUP, além disso, foram realizadas correlações genéticas entre as variáveis avaliadas. Os resultados apresentam maior herdabilidade individual no sentido amplo para as variáveis de volume comercial e DAP; também, mostram que a qualidade do fuste aos 22 e 34 meses apresenta os maiores coeficientes de herdabilidade individual e herdabilidade média do clone. As correlações genéticas mostram valores altos e positivos entre as variáveis DAP-volume comercial e altura comercial-qualidade do fuste, aos 34 meses de idade, com 0,97 e 0,74, respectivamente. Os clones 17 e 34, mostraram ser os melhores no ranking genético em termos de volume comercial; enquanto o material de controle e o clone 19 foram os que se localizaram nas últimas posições do ranking. Obteve-se um ganho genético aos 34 meses de idade de 6,11 % e 9,36 % em DAP e volume comercial, respectivamente. Conclui-se que existe variabilidade genética nos materiais genéticos utilizados, permitindo a obtenção de ganhos genéticos importantes, especialmente se forem utilizados os primeiros 10 clones do ranking genético dos acessos avaliados.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[mejoramiento genético]]></kwd>
<kwd lng="es"><![CDATA[correlaciones genéticas]]></kwd>
<kwd lng="es"><![CDATA[ganancia genética]]></kwd>
<kwd lng="es"><![CDATA[parámetros genéticos]]></kwd>
<kwd lng="en"><![CDATA[genetic improvement]]></kwd>
<kwd lng="en"><![CDATA[genetic correlations]]></kwd>
<kwd lng="en"><![CDATA[genetic gain]]></kwd>
<kwd lng="en"><![CDATA[genetic parameters]]></kwd>
<kwd lng="pt"><![CDATA[melhoramento genético]]></kwd>
<kwd lng="pt"><![CDATA[correlações genéticas]]></kwd>
<kwd lng="pt"><![CDATA[ganho genético]]></kwd>
<kwd lng="pt"><![CDATA[parâmetros genéticos]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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