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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
06/09/2006 |
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Data da última atualização: |
12/12/2006 |
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Autoria: |
LEITE, M. S. de O.; PETERNELLI, L. A.; BARBOSA, M. H. P. |
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Título: |
Effects of plot size on the estimation of genetic parameters in sugarcane families. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 6, n. 1, p. 40-46, Mar. 2006. |
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Idioma: |
Inglês |
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Conteúdo: |
An optimization of the use of resources in sugarcane breeding programs that would not interfere with the genetic evaluations is desirable and of great importance. The costs could be reduced and the chances of success would be higher through the possibility of investing rationally in a larger number of available genetic resources. Our study evaluated the smallest number of rows per plots of sugarcane families for yield traits; the variations in the parameter estimates for different plot sizes were discussed; and the ideal plot size was estimated by the maximum curvature method. Plot reduction leads to gradual CV increases and interferes with the ratio CVg/CVe, which in some cases dropped to values below one unit, indicating experimental inaccuracy. Heritability estimates decrease with plot size. The maximum curvature method showed that 2-row plots are enough to evaluate all characteristics.. |
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Palavras-Chave: |
Cana-de-açúcar; Herdabilidade; Saccharum spp; Selection. |
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Thesagro: |
Seleção; Variação Genética. |
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Thesaurus Nal: |
genetic variation; heritability. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01614naa a2200241 a 4500
001 1214375
005 2006-12-12
008 2006 bl uuuu u00u1 u #d
100 1 $aLEITE, M. S. de O.
245 $aEffects of plot size on the estimation of genetic parameters in sugarcane families.
260 $c2006
520 $aAn optimization of the use of resources in sugarcane breeding programs that would not interfere with the genetic evaluations is desirable and of great importance. The costs could be reduced and the chances of success would be higher through the possibility of investing rationally in a larger number of available genetic resources. Our study evaluated the smallest number of rows per plots of sugarcane families for yield traits; the variations in the parameter estimates for different plot sizes were discussed; and the ideal plot size was estimated by the maximum curvature method. Plot reduction leads to gradual CV increases and interferes with the ratio CVg/CVe, which in some cases dropped to values below one unit, indicating experimental inaccuracy. Heritability estimates decrease with plot size. The maximum curvature method showed that 2-row plots are enough to evaluate all characteristics..
650 $agenetic variation
650 $aheritability
650 $aSeleção
650 $aVariação Genética
653 $aCana-de-açúcar
653 $aHerdabilidade
653 $aSaccharum spp
653 $aSelection
700 1 $aPETERNELLI, L. A.
700 1 $aBARBOSA, M. H. P.
773 $tCrop Breeding and Applied Biotechnology, Viçosa, MG$gv. 6, n. 1, p. 40-46, Mar. 2006.
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Embrapa Arroz e Feijão (CNPAF) |
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