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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas; Embrapa Gado de Corte. |
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Data corrente: |
24/10/2013 |
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Data da última atualização: |
06/11/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RESENDE, R. M. S.; CASLER, M. D.; RESENDE, M. D. V. de. |
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Afiliação: |
ROSANGELA MARIA SIMEAO RESENDE, CNPGC; MICHAEL D. CASLER, UFV; MARCOS DEON VILELA DE RESENDE, CNPF. |
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Título: |
Selection methods in forage breeding: a quantitative appraisal. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Crop Science, Madison, v. 53, p. 1925-1936, Sep./Oct. 2013. |
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DOI: |
10.2135/cropsci2013.03.0143 |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Forage breeding can be extraordinarily complex because of the number of species, perenniality, mode of reproduction, mating system, and a variable genetic correlation between spaced plants and sward plots. Aiming to compare eight forage breeding methods for direct selection gain and correlated response, different scenarios of trait heritability and genetic correlation have been evaluated based on deterministic equations of expected (theoretical) breeding accuracy applied to half-sib progenies evaluated in spaced-plant trails, sward-plot trials, or both. Relative efficiency for each method is given in relation to individual selection. Methods differ most when heritability is lower than 0.3, which coincides with the majority of the situations met by forage breeders. Genetic gain of best linear unbiased prediction (BLUP)-based methods is superior to all other methods for trait heritability lower than 0.3, independent of field-trail plot methods, except for parental selection. Methods based on BLUP have also shown higher efficiency when the genetic correlation between spaced-plant and sward-plot trials evaluations of a trait is lower than 0.7 and indirect-trait heritability is lower than 0.3. The choice of forage breeding method should include consideration of the mode of reproduction and the target-trait heritability. The benefits of BLUP-based selection methods should receive more serious consideration by forage breeders. |
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Palavras-Chave: |
BLUP; Combined selection; Forage breeding; Forrageira; Genetic breeding; Melhoramento genético. |
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Thesagro: |
Método; Pastagem. |
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Thesaurus Nal: |
breeding methods. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02201naa a2200265 a 4500
001 1970260
005 2013-11-06
008 2013 bl uuuu u00u1 u #d
024 7 $a10.2135/cropsci2013.03.0143$2DOI
100 1 $aRESENDE, R. M. S.
245 $aSelection methods in forage breeding$ba quantitative appraisal.$h[electronic resource]
260 $c2013
520 $aForage breeding can be extraordinarily complex because of the number of species, perenniality, mode of reproduction, mating system, and a variable genetic correlation between spaced plants and sward plots. Aiming to compare eight forage breeding methods for direct selection gain and correlated response, different scenarios of trait heritability and genetic correlation have been evaluated based on deterministic equations of expected (theoretical) breeding accuracy applied to half-sib progenies evaluated in spaced-plant trails, sward-plot trials, or both. Relative efficiency for each method is given in relation to individual selection. Methods differ most when heritability is lower than 0.3, which coincides with the majority of the situations met by forage breeders. Genetic gain of best linear unbiased prediction (BLUP)-based methods is superior to all other methods for trait heritability lower than 0.3, independent of field-trail plot methods, except for parental selection. Methods based on BLUP have also shown higher efficiency when the genetic correlation between spaced-plant and sward-plot trials evaluations of a trait is lower than 0.7 and indirect-trait heritability is lower than 0.3. The choice of forage breeding method should include consideration of the mode of reproduction and the target-trait heritability. The benefits of BLUP-based selection methods should receive more serious consideration by forage breeders.
650 $abreeding methods
650 $aMétodo
650 $aPastagem
653 $aBLUP
653 $aCombined selection
653 $aForage breeding
653 $aForrageira
653 $aGenetic breeding
653 $aMelhoramento genético
700 1 $aCASLER, M. D.
700 1 $aRESENDE, M. D. V. de
773 $tCrop Science, Madison$gv. 53, p. 1925-1936, Sep./Oct. 2013.
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