fan.stability {agridat} | R Documentation

## Multi-environment trial of maize hybrids in China

### Description

Yield of 13 hybrids, grown in 10 locations across 2 years. Conducted in Yunnan, China.

### Format

A data frame with 260 observations on the following 5 variables.

`gen`

  genotype

`maturity`

  maturity, days

`year`

  year

`loc`

  location

`yield`

  yield, Mg/ha

### Details

Data are the mean of 3 reps.

These data were used to conduct a stability analysis of yield.

### Source

Fan, X.M. and Kang, M.S. and Chen, H. and Zhang, Y. and Tan, J. and Xu, C. (2007). Yield stability of maize hybrids evaluated in multi-environment trials in Yunnan, China. Agronomy Journal, 99, 220-228. https://doi.org/10.2134/agronj2006.0144

Used with permission of Manjit Kang.

### Examples

    data(fan.stability)
    dat <- fan.stability

    dat$env <- factor(paste(dat$loc, dat$year, sep=""))
    require(lattice)
    dotplot(gen~yield|env, dat, main="fan.stability")

    if(require(reshape2) & require(agricolae)){
      dm <- acast(dat, gen~env, value.var='yield')
      # Use 0.464 as pooled error from ANOVA.  Calculate yield mean/stability.
      stability.par(dm, rep=3, MSerror=0.464) # Table 5 of Fan et al.
    }

[Package agridat version 1.16 Index]