stability: Stability analysis based on Eberhart and Russell (1966) model

In plantbreeding: Analysis and visualization of data from plant breeding and genetics experiments

Description

The function implements the Eberhart and Russell (1966) model for stability analysis.

Usage

stability(dataframe, yvar, genotypes, environments, replication)

Arguments

dataframe	dataframe with Y variables, genotype, environment, and replication
yvar	Name of Y variable
genotypes	Name of genotype variable
environments	Name of environments variable
replication	Name of replication variable

Author(s)

Umesh R Rosyara

References

Eberhart S.A., Russell W.A. (1966) Stability parameters for comparing varieties. Crop Sci. 6: 36-40.

Singh R.K., Chaudhary B.D.(1985) Biometrical Methods in Quantitative Genetics Analysis, Kalyani Publishers

Examples

yvar <- c( 36.4, 40.0, 32.4, 33.5, 41.3, 27.9, 38.5, 38.6, 41.6, 22.6,
           41.3, 38.9, 30.9, 40.1, 43.6, 36.3, 43.0, 29.6, 34.4, 35.1,
           51.7, 37.1, 25.5, 47.4, 39.5, 36.1, 40.6, 28.6, 32.8, 33.0,
           22.6, 42.6, 52.8, 20.3, 38.3, 39.4, 36.5, 31.7, 22.8, 33.2,
           39.4, 28.2, 45.8, 28.6, 35.4, 36.5, 37.4, 21.0, 25.4, 28.3,
           30.2, 29.5, 32.9, 29.5, 47.6, 40.3, 30.8, 30.1, 34.5, 35.8,
           21.8, 27.1, 28.6, 25.5, 28.5, 24.5, 27.1, 25.4, 22.4, 32.4,
           26.4, 27.7, 36.8, 21.5, 29.6, 31.5, 25.8, 17.3, 24.3, 24.3,
           22.6, 17.7, 35.5, 32.8, 25.8, 28.8, 28.0, 24.8, 26.7, 29.8,
           31.2, 20.2, 28.0, 21.3, 36.9, 41.2, 27.9, 20.6, 20.9, 20.8,
           25.4, 29.7, 26.3, 33.7, 29.8, 27.3, 25.9, 25.3, 30.2, 17.8,
           23.7, 23.9, 32.2, 34.7, 30.6, 28.3, 27.2, 23.9, 23.8, 15.0,
           24.3, 28.2, 20.3, 32.3, 18.5, 28.1, 22.0, 30.7, 32.4, 26.1,
           34.3, 30.2, 25.6, 28.1, 29.2, 40.1, 28.2, 27.7, 37.0, 32.4, 
           36.5, 30.1, 35.1, 28.2, 34.5, 42.1, 38.7, 15.1, 25.4, 38.7 )

          
replication <- c( rep(c(rep(1, 10), rep(2,10), rep(3,10)),5))
genotypes <- c(rep(paste("G", 1:10, sep= ""), 15))
environments <- c(rep(c("CB","CA", "CC", "MN","SD"), each = 30))
mydf1 <- data.frame (yvar, replication, genotypes, environments)

out <- stability (dataframe = mydf1 , yvar = "yvar", genotypes = "genotypes", 
environments = "environments", replication =  "replication")
# print out 
out 

plantbreeding documentation built on May 2, 2019, 4:54 p.m.