Path analysis and expected response in indirect selection for grain yield in soybean


Autoria(s): Bárbaro, Ivana Marino; Centurion, Maria Aparecida Pessôa Da Cruz; Di Mauro, Antonio Orlando; Unêda-Trevisoli, Sandra Helena; Arriel, Nair Helena Castro; Costa, Marcelo Marchi
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

01/12/2006

Resumo

This study aimed to determine the best auxiliary trait for indirect selection of soybean grain yield, through path analysis and in avoidance of the adverse effects of multicollinearity and expected response. Seventy-nine F5 soybean genotypes from the cross FT-Cometa x Bossier were used. The populations were distributed on the field was the families inserted with replicated controls. Primary and secondary traits of grain yield were evaluated in four phenotypically superior plants per family. The traits number of pods, height and number of nodes were considered as the most important, showing the best combination of direct effect and genotypic correlation. The number of pods achieved the highest expected gain through the estimation method based on the selection differential. On the other hand, plant height, by the method based on selection intensity, was not a good indicator of the most productive plants.

Formato

151-159

Identificador

http://dx.doi.org/10.12702/1984-7033.v06n02a06

Crop Breeding and Applied Biotechnology, v. 6, n. 2, p. 151-159, 2006.

1518-7853

http://hdl.handle.net/11449/69275

10.12702/1984-7033.v06n02a06

2-s2.0-41149092589

2-s2.0-41149092589.pdf

Idioma(s)

eng

Relação

Crop Breeding and Applied Biotechnology

Direitos

openAccess

Palavras-Chave #Agronomic traits #Collinearity #Genotypic correlation #Indirect selection #Path analysis #Glycine max
Tipo

info:eu-repo/semantics/article