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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
07/10/2004 |
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Data da última atualização: |
07/10/2004 |
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Autoria: |
COSTA, R. B. da; RESENDE, M. D. V. de; GONÇALVES, P. de S.; SILVA, M. de A. |
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Título: |
Individual multivariate REML/BLUP in the presence of genotype x environment interaction in rubbrer tree (Hevea) breeding. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 1, p. 131-140, Mar. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
The present study was carried our to estimate genetic parameters and additive genetic values by the individual REML/BLUP procedure for rubber tree (Hevea brasiliensis (Will ex Adr. de Juss.) Muell.-Arg.) selection in the presence of genotype x environment interacion. Twenty-two half-sib progenies were planted in Experimental Stations at Jaú, Pindorama and Votuporanga in São Paulo State, Brazil, in a randomiized complete block design with five replicates and 10 plants per plot, and assessed for dry rubber yield at three years of age. The results for yield showed the presence of genetic variability among progenies with higher values for Pindorama, especially for additive genetic and phenotypic variance estimates, characterizing the location as a favorable environment for the expression of the population genetic variability. The high correlation among progenies observed between the Votuporanga and Jaú environments confirmed that a single breeding program can satisfactorily attend both regions. The genetic gains estimated by the multivariate and univariate BLUP methods showed supriority (5% to 21%) for the individual multivariate BLUP procedure, reflecting the great efficacy and flexibility ot the method for predicting genetic values and gains in the presence of genotype x environment interaction. The use of information from the three locations combined leads to the maximization of the genetic gain with the selection. |
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Palavras-Chave: |
Selection. |
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Thesagro: |
Hevea Brasiliensis. |
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Thesaurus Nal: |
correlation; heritability; progeny. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02121naa a2200217 a 4500
001 1212552
005 2004-10-07
008 2002 bl uuuu u00u1 u #d
100 1 $aCOSTA, R. B. da
245 $aIndividual multivariate REML/BLUP in the presence of genotype x environment interaction in rubbrer tree (Hevea) breeding.
260 $c2002
520 $aThe present study was carried our to estimate genetic parameters and additive genetic values by the individual REML/BLUP procedure for rubber tree (Hevea brasiliensis (Will ex Adr. de Juss.) Muell.-Arg.) selection in the presence of genotype x environment interacion. Twenty-two half-sib progenies were planted in Experimental Stations at Jaú, Pindorama and Votuporanga in São Paulo State, Brazil, in a randomiized complete block design with five replicates and 10 plants per plot, and assessed for dry rubber yield at three years of age. The results for yield showed the presence of genetic variability among progenies with higher values for Pindorama, especially for additive genetic and phenotypic variance estimates, characterizing the location as a favorable environment for the expression of the population genetic variability. The high correlation among progenies observed between the Votuporanga and Jaú environments confirmed that a single breeding program can satisfactorily attend both regions. The genetic gains estimated by the multivariate and univariate BLUP methods showed supriority (5% to 21%) for the individual multivariate BLUP procedure, reflecting the great efficacy and flexibility ot the method for predicting genetic values and gains in the presence of genotype x environment interaction. The use of information from the three locations combined leads to the maximization of the genetic gain with the selection.
650 $acorrelation
650 $aheritability
650 $aprogeny
650 $aHevea Brasiliensis
653 $aSelection
700 1 $aRESENDE, M. D. V. de
700 1 $aGONÇALVES, P. de S.
700 1 $aSILVA, M. de A.
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 2, n. 1, p. 131-140, Mar. 2002.
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Embrapa Arroz e Feijão (CNPAF) |
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