a dataframe containing trait, genotype and environment.
trait
colname of a column containing a numeric vector of interested trait to be analysized.
genotype
colname of a column containing a character or factor vector labeling different genotypic varieties
environment
colname of a column containing a character or factor vector labeling different environments
unit.correct
logical, default is FALSE, returning the stability index with unit equals to squared unit of trait; when TRUE, returning stability index with the unit as same as unit of trait.'
Author
Tien-Cheng Wang
Details
Genotypic stability (Hanson, 1970) is calculatd based on regression function.
Variety with low stability variance is considered as stable.
Equation of genotypic stability can be found in vignette file.