Multi-environment trial of maize hybrids in China

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

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

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

libs(reshape2, 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.