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  <titleInfo>
    <title>Variabilidade agronômica e seleção de progênies F1 de Paspalum</title>
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  <name type="personal">
    <namePart>Huber, Kátia Graziela da Costa</namePart>
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    <namePart>Dall’Agnol, Miguel</namePart>
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    <namePart>Motta, Eder Alexandre Minski da</namePart>
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  <name type="personal">
    <namePart>Pereira, Emerson André</namePart>
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  <name type="personal">
    <namePart>Ávila, Mariana Rockenbach de</namePart>
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  <name type="personal">
    <namePart>Perera, Marcos Zuñeda</namePart>
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    <namePart>Santos, Tamyres Nunes dos</namePart>
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RESUMO  -   O objetivo deste estudo foi avaliar o desempenho forrageiro e estimar as correlações fenotípicas de caracteres agronômicos de híbridos interespecíficos de Paspalum, em duas regiões fisiográficas distintas. Avaliaram-se 20 híbridos, dois ecótipos de P.   guenoarum, um de P. plicatulum e a cv. Aruana de Panicum maximum, utilizada como testemunha. O delineamento foi em blocos ao acaso, com três repetições. Os caracteres mensurados foram: produção de matéria seca total, produção de matéria seca de folhas, produção de matéria seca de colmos, produção de matéria seca de inflorescência, relação folha: colmo, altura, diâmetro de cobertura das plantas e numero de perfilhos. Os híbridos 10E4026, 10E5052, 08Q01, 10E43, 10E40104, 10E6086, 10E4025, 10E5017, 10E4041, 10E4071 e 10E31 apresentaram desempenho forrageiro superior nos dois ambientes, e são indicados para novas etapas dentro de programas de melhoramento de forrageiras. A alta correlação positiva entre a massa seca de folha com a massa seca total, diâmetro de cobertura das plantas e altura, torna a estimativa das correlações fenotípicas uma importante ferramenta na seleção de híbridos com caracteres agronômicos superiores.  



Palavras-chave:       ambiente, apomixia, hibridação, melhoramento genético</abstract>
  <abstract>


ABSTRACT  -   The objective of this study was to evaluate the forage performance and estimate the correlations of agronomic traits of interspecific hybrids of Paspalum in two distinct physiographic regions. They evaluated 20 hybrids, two ecotypes of P.  guenoarum,  one  P.   plicatulum and cv. Aruana of Panicum  maximum, used as a control. The design was a randomized block design with three replications. The traits measured were: total dry matter yield, leaf dry matter yield, stem dry matter yield, inflorescence dry matter yield, leaf: stem ratio, height, plant coverage diameter and number of tillers. The hybrids 10E4026, 10E5052, 08Q01, 10E43, 10E40104, 10E6086, 10E4025, 10E5017, 10E4041, 10E4071 and 10E31 showed higher forage performance in both environments and are suitable for new steps in forage breeding programs. The high positive correlation between the leaf dry mass with the total dry mass, plant coverage diameter and height, makes the estimation of correlations an important tool in selecting hybrids with superior agronomic traits. 



Key words:       environment, apomixis, hybridization, genetic improvement</abstract>
  <note>

Publicação online; 23 ref.; 4 tables; Summaries (En, Pt)</note>
  <subject>
    <topic>GRAMÍNEA PERENE</topic>
  </subject>
  <subject>
    <topic>CARACTERÍSTICAS AGRONÔMICAS</topic>
  </subject>
  <subject>
    <topic>HÍBRIDO</topic>
  </subject>
  <subject>
    <topic>MELHORAMENTO VEGETAL</topic>
  </subject>
  <subject>
    <topic>FORRAGEM</topic>
  </subject>
  <relatedItem type="host">
    <titleInfo>
      <title>Revista Brasileira de Ciências Agrárias (Brazil)</title>
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    <originInfo>
      <publisher>Recife-PE Universidade Federal Rural de Pernambuco 2006</publisher>
    </originInfo>
    <identifier>2026-0410</identifier>
    <identifier type="issn">1981-1160</identifier>
    <identifier type="local">BR2025005536</identifier>
    <part>
      <text>v. 11(4) p. 374-380; (2016)</text>
    </part>
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  <identifier type="uri">http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v11i4a5391/483</identifier>
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    <url>http://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v11i4a5391/483</url>
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    <recordCreationDate encoding="marc">260129</recordCreationDate>
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