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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
14/01/2005 |
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Data da última atualização: |
14/01/2005 |
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Autoria: |
BIZETI, H. S.; CARVALHO, C. G. P. de; SOUZA, J. R. P. de; DESTRO, D. |
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Título: |
Path analysis under multicollinearity in soybean. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Brazilian Archives of Biology and Technology, Curitiba, vol. 47, no. 5, p. 669-676, Sept. 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed to establish the phenotypic correlations among several soybean traits with grain yield in direct and indirect effects using path analysis, and to compare alternative methods for minimizing the adverse effects of multicollinearity in estimating path coefficients. The experiment was conducted in greenhouse in a randomized complete block design with four replications. Nine soybean genotypes belonging to three seed size categories were used. The correlation studies and the path analysis showed that the seed size was not important for increased yield. The number of nodes and plant height at maturity showed significant correlation with grain yield. Using the least square methodology, the results obtained by path analysis under multicollinearity were not satisfactory. The ridge path analysis and the trait culling were efficient in reducing the adverse effects of multicollinearity. Both methods showed that only the number of nodes at maturity trait had a high direct effect on grain yield per plant. |
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Categoria do assunto: |
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Marc: |
LEADER 01490naa a2200157 a 4500
001 1467770
005 2005-01-14
008 2004 bl --- 0-- u #d
100 1 $aBIZETI, H. S.
245 $aPath analysis under multicollinearity in soybean.
260 $c2004
520 $aThis study aimed to establish the phenotypic correlations among several soybean traits with grain yield in direct and indirect effects using path analysis, and to compare alternative methods for minimizing the adverse effects of multicollinearity in estimating path coefficients. The experiment was conducted in greenhouse in a randomized complete block design with four replications. Nine soybean genotypes belonging to three seed size categories were used. The correlation studies and the path analysis showed that the seed size was not important for increased yield. The number of nodes and plant height at maturity showed significant correlation with grain yield. Using the least square methodology, the results obtained by path analysis under multicollinearity were not satisfactory. The ridge path analysis and the trait culling were efficient in reducing the adverse effects of multicollinearity. Both methods showed that only the number of nodes at maturity trait had a high direct effect on grain yield per plant.
700 1 $aCARVALHO, C. G. P. de
700 1 $aSOUZA, J. R. P. de
700 1 $aDESTRO, D.
773 $tBrazilian Archives of Biology and Technology, Curitiba, vol. 47, no. 5, p. 669-676, Sept. 2004.
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Embrapa Soja (CNPSO) |
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| 1. |  | CRISPINO, C. C.; FRANCHINI, J. C.; ARIHARA, J.; LOUREIRO, M. F.; CAMPO, R. J.; HUNGRIA, M. Inoculation and N-fertilizer application in the soybean crop. In: CONGRESSO BRASILEIRO DE SOJA, 2.; MERCOSOJA 2002, 2002, Foz do Iguaçu. Perspectivas do agronegócio da soja: resumos. Londrina: Embrapa Soja, 2002. p. 206. (Embrapa Soja. Documentos, 181). Organizado por Odilon Ferreira Saraiva, Clara Beatriz Hoffmann-Campo.| Biblioteca(s): Embrapa Soja. |
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| 2. | | HUNGRIA, M.; FRANCHINI, J. C.; CAMPO, R. J.; CRISOINO, C. C.; MORAES, J. Z.; SIBALDELLI, R. N. R.; MENDES, I. C.; ARIHARA, J. Nitrogen nutrition of soybean in Brazil: contributions of biological N2 fixation an N fertilizer to grain yield. Candian Journal of Plant Science, v. 86, n. 4, p. 927-939, 2006.| Biblioteca(s): Embrapa Cerrados. |
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