Mixed model

Effects of using phenotypic means and genotypic values in GGE biplot analyses on genotype by environment studies on tropical maize (Zea mays)

I. S. C. Granato, Fritsche-Neto, R., Resende, M. D. V., Silva, F. F., Granato, I. S. C., Fritsche-Neto, R., Resende, M. D. V., and Silva, F. F., Effects of using phenotypic means and genotypic values in GGE biplot analyses on genotype by environment studies on tropical maize (Zea mays), vol. 15, p. -, 2016.

The objective of this study was to examine the effects of the type and intensity of nutritional stress, and of the statistical treatment of the data, on the genotype x environment (G x E) interaction for tropical maize (Zea mays). For this purpose, 39 hybrid combinations were evaluated under low- and high-nitrogen and -phosphorus availability. The plants were harvested at the V6 stage, and the shoot dry mass was estimated.

Genomic selection for slaughter age in pigs using the Cox frailty model

V. S. Santos, S. Filho, M., Resende, M. D. V., Azevedo, C. F., Lopes, P. S., Guimarães, S. E. F., Glória, L. S., and Silva, F. F., Genomic selection for slaughter age in pigs using the Cox frailty model, vol. 14, pp. 12616-12627, 2015.

The aim of this study was to compare genomic selection methodologies using a linear mixed model and the Cox survival model. We used data from an F2 population of pigs, in which the response variable was the time in days from birth to the culling of the animal and the covariates were 238 markers [237 single nucleotide polymorphism (SNP) plus the halothane gene]. The data were corrected for fixed effects, and the accuracy of the method was determined based on the correlation of the ranks of predicted genomic breeding values (GBVs) in both models with the corrected phenotypic values.

Subscribe to Mixed model