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| Verardi,Cecília Khusala; Resende,Marcos Deon Vilela de; Costa,Reginaldo Brito da; Gonçalves,Paulo de Souza. |
| Os objetivos deste trabalho foram determinar a interação genótipo x ambiente e a estabilidade e adaptabilidade da produção de borracha em progênies de seringueira (Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.), bem como estimar o ganho genético com a seleção dos materiais mais produtivos. Foram utilizadas três populações de progênies de meios-irmãos de seringueira, cultivadas em três municípios do Estado de São Paulo. Os experimentos foram instalados em delineamento de blocos ao acaso com 22 progênies, 6 repetições e 10 plantas por parcela, com espaçamento de 1,5x1,5 m. Aos três anos de idade, as progênies foram avaliadas quanto à produção de borracha seca utilizando-se o teste precoce de produção Hamaker Morris-Mann. As análises de estabilidade e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea brasiliensis; Blup; Interação genótipo x ambiente; Modelos mistos; Reml; Seleção genética. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001000010 |
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| Verardi,Cecília Khusala; Scaloppi Junior,Erivaldo José; Silva,Guilherme Augusto Peres; Gouvêa,Lígia Regina Lima; Gonçalves,Paulo de Souza. |
| The objective of this work was to assess the genetic parameters and to estimate genetic gains in young rubber tree progenies. The experiments were carried out during three years, in a randomized block design, with six replicates and ten plants per plot, in three representative Hevea crop regions of the state of São Paulo, Brazil. Twenty-two progenies were evaluated, from three to five years old, for rubber yield and annual girth growth. Genetic gain was estimated with the multi-effect index (MEI). Selection by progenies means provided greater estimated genetic gain than selection based on individuals, since heritability values of progeny means were greater than the ones of individual heritability, for both evaluated variables, in all the assessment years.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea brasiliensis; Annual girth growth; Early selection; Effective population size; Multi-effect index; Rubber yield. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000400009 |
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| Verardi,Cecília Khusala; Scaloppi Junior,Erivaldo José; Gonçalves,Paulo de Souza. |
| The objective of this work was to estimate the genetic parameters, genotypic and phenotypic correlations, and direct and indirect genetic gains among and within rubber tree (Hevea brasiliensis) progenies. The experiment was set up at the Municipality of Jaú, SP, Brazil. A randomized complete block design was used, with 22 treatments (progenies), 6 replicates, and 10 plants per plot at a spacing of 3x3 m. Three‑year‑old progenies were assessed for girth, rubber yield, and bark thickness by direct and indirect gains and genotypic correlations. The number of latex vessel rings showed the best correlations, correlating positively and significantly with girth and bark thickness. Selection gains among progenies were greater than within progeny for all the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea brasiliensis; Direct and indirect method; Early selection; Selection cycle. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000900015 |
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