pacheco.soybean: Multi-environment trial of soybean in Brazil.

In kwstat/agridat: Agricultural Datasets

Multi-environment trial of soybean in Brazil.

Description

Yields of 18 soybean genotypes at 11 environments in Brazil.

Format

gen

genotype, 18 levels

env

environment, 11 levels

yield

yield, kg/ha

Details

In each environment was used an RCB design with 3 reps. The means of the reps are shown here.

Used with permission of Robert Pacheco.

Source

R M Pacheco, J B Duarte, R Vencovsky, J B Pinheiro, A B Oliveira, (2005). Use of supplementary genotypes in AMMI analysis. Theor Appl Genet, 110, 812-818. https://doi.org/10.1007/s00122-004-1822-6

Examples

## Not run: 

library(agridat)
data(pacheco.soybean)
dat <- pacheco.soybean

# AMMI biplot similar to Fig 2 of Pacheco et al.
libs(agricolae)
m1 <- with(dat, AMMI(env, gen, REP=1, yield))
bip <- m1$biplot[,1:3]
# Fig 1 of Pacheco et al.
with(bip, plot(yield, PC1, cex=0.0,
               text(yield,PC1,labels=row.names(bip), col="blue"),
               xlim=c(1000,3000),main="pacheco.soybean - AMMI biplot",frame=TRUE))
with(bip[19:29,], points(yield, PC1, cex=0.0,
                         text(yield,PC1,labels=row.names(bip[19:29,]),
                              col="darkgreen")))


## End(Not run)

kwstat/agridat documentation built on Dec. 17, 2024, 3:56 p.m.