Eberhart and Russell's regression modelSource:
The dataset containing the columns related to Environments, Genotypes, replication/block and response variable(s)
The name of the column that contains the levels of the environments.
The name of the column that contains the levels of the genotypes.
The name of the column that contains the levels of the replications/blocks
The response variable(s). To analyze multiple variables in a single procedure use, for example,
resp = c(var1, var2, var3).
Logical argument. If
verbose = FALSEthe code will run silently.
An object of class
ge_reg with the folloing items for each
data: The data with means for genotype and environment combinations and the environment index
anova: The analysis of variance for the regression model.
regression: A data frame with the following columns:
GEN, the genotypes;
b1the intercept and slope of the regression, respectively;
t(b1=1)the calculated t-value;
pval_tthe p-value for the t test;
s2dithe deviations from the regression (stability parameter);
F(s2di=0)the F-test for the deviations;
pval_fthe p-value for the F test;
RMSEthe root-mean-square error;
R2the determination coefficient of the regression.
b0_variance: The variance of b0.
b1_variance: The variance of b1.
Eberhart, S.A., and W.A. Russell. 1966. Stability parameters for comparing Varieties. Crop Sci. 6:36-40. doi:10.2135/cropsci1966.0011183X000600010011x
Tiago Olivoto, firstname.lastname@example.org