Data/hora: 09/06/2024 17:34:06

Provedor de dados: | 52
País: | Brazil
Título: | Path analysis under multicollinearity in soybean
Autores: | Bizeti,Henrique Stoco; Carvalho,Claudio Guilherme Portela de; Souza,José Roberto Pinto de; Destro,Deonisio.
Data: | 2004-09-01
Ano: | 2004
Palavras-chave: | Genetic breeding; Glycine max; Grain yield; Seed size; Root and canopy traits.
Resumo: | 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000500001
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132004000500001
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.47 n.5 2004
Fonte: | info:eu-repo/semantics/openAccess