stability.kilch {agrostab}

Variance of specific adaptive ability

Description

This function calculates several stability parameters suggested by Kilchevsky & Khotyleva.

Usage

stability.kilch(dataf, res_var, gen_var, env_var, rep_var, plotIt = TRUE)

Arguments

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

Value

Returns a list of two objects:

ANOVA

the analysis of variance table

scores

the data frame object of stability analysis results:

• mean mean value

• OAC common adaptive ability

• sigma_ge variance of GE interaction

• sigma_CAC variance of specific adaptive ability

• S_g relative stability

References

Kilchevsky A.V., Khotyleva L.V. 1989. Genotype and environment in plant breeding. - Minsk: Science and technology. (In Russian).

Examples

data(exp_data)
stability.kilch(exp_data,"yield","gen","env","rep")