linder.wheat {agridat}

Multi-environment trial of wheat in Switzerland

Description

Multi-environment trial of wheat in Switzerland

Usage

data("linder.wheat")

Format

A data frame with 252 observations on the following 4 variables.

env

environment

block

block

gen

genotype

yield

yield, in 10 kg/ha

Details

An experiment of 9 varieties of wheat in 7 localities in Switzerland in 1960, RCB design.

Source

Arthur Linder (1960). Design and Analysis of Experiments, notes on lectures held during the fall semester 1963 at the Statistics Department, University of North Carolina, page 160. https://www.stat.ncsu.edu/information/library/mimeo.archive/ISMS_1964_398-A.pdf

References

None.

Examples

library(agridat)
data(linder.wheat)
dat <- linder.wheat

libs(gge)
dat <- transform(dat, eb=paste0(env,block))
m1 <- gge(dat, yield~gen*eb, env.group=env)
biplot(m1, main="linder.wheat")