1-(Xms/Xmp), where Xms is the mean be concerned produce of all genotypes and you can Xmp ‘s the indicate non stress give of all the genotypes.
Fret threshold directory
Where Yp and Ys denote the grain yield of a genotype under non stress and stress conditions, respectively and Xp is the mean yield of all genotypes under non stress conditions.
Where, Xs = Yield of a given genotype in a stress environment, Xp = Yield of the same genotype in the non-stress environment.
Where Yp = Potential yield of a given genotype in a non-stress environment, Ys = Yield of the same genotype in a stress environment.
Mathematical indicate output
Geometric imply yields (GMP) for every single genotype can be computed (Fernandez 1992; Schneider et al. 1997) according to following method: