pacheco.soybean {agridat} | R Documentation

## 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.

### 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. http://doi.org/10.1007/s00122-004-1822-6

Used with permission of Robert Pacheco.

### Examples

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

    # AMMI biplot similar to Fig 2 of Pacheco et al.
    if(require(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")))
    }

[Package agridat version 1.16 Index]