stability.udach {agrostab} | R Documentation |
This function calculates the Udachin's parameters of stability
stability.udach(dataf, res_var, gen_var, env_var, rep_var, plotIt = TRUE)
dataf |
the name of the data frame containing the data to analyze. |
res_var |
the response variable. |
gen_var |
the genotypes variable. |
env_var |
the environments variable. |
rep_var |
the replications variable. |
plotIt |
a logical value specifying if plot should be drawn; default is TRUE |
Returns a data frame:
the genotype's Steadiness of stability index
the genotype's intensity value
the genotype's yield max value
the genotype's yield min value
the genotype's standard deviation at optimal environment
the genotype's standard deviation at limited environment
the genotype's stability index at optimal environment
the genotype's stability index at limited environment
Udachin R.A. 1990. Methods of assessing the ecological plasticity of wheat varieties. Selection and seed production. 5: 2-6. (In Russian)
data(exp_data)
stability.udach(exp_data,"yield","gen","env","rep")