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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Designs and model effects definitions in the initial stage of a plant breeding program.
Autores:  SOUZA, E.F.M. de
PETERNELLI, L.A.
BARBOSA, M.H.P.
Data:  2006-06-29
Ano:  2006
Palavras-chave:  Augmented design
Incomplete block
Selection
Heritability
Sugarcane
Stochastic simulation
Delineamento aumentado
Bloco incompleto
Seleção
Herdabilidade
Cana-de-açúcar
Simulação estocástica
Resumo:  The objective of this work was to compare the relative efficiency of initial selection and genetic parameter estimation, using augmented blocks design (ABD), augmented blocks twice replicated design (DABD) and group of randomised block design experiments with common treatments (ERBCT), by simulations, considering fixed effect model and mixed model with regular treatment effects as random. For the simulations, eight different conditions (scenarios) were considered. From the 600 simulations in each scenario, the mean percentage selection coincidence, the Pearsons´s correlation estimates between adjusted means for the fixed effects model, and the heritability estimates for the mixed model were evaluated. DABD and ERBCT were very similar in their comparisons and slightly superior to ABD. Considering the initial stages of selection in a plant breeding program, ABD is a good alternative for selecting superior genotypes, although none of the designs had been effective to estimate heritability in all the different scenarios evaluated.

2006
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  35495

http://www.alice.cnptia.embrapa.br/handle/doc/118467

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/107417/1/Designs-and-model.pdf
Editor:  Pesquisa Agropecuária Brasileira, Brasília, v.41, n.3, p.369-375, mar. 2006.
Relação:  Área de Informação da Sede - Artigo em periódico indexado (ALICE)
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