Selection Index in the Study of Adaptability and Stability in Maize

Table 2

Estimates obtained for PRESS_m (sum of squared prediction error) and PRECORR_(m) (predictive accuracy) in cross validation of the GGE1 and GGE2 models (biplot with 1 and 2 principal components, resp.) for the GIDI and for yield (ton ha⁻¹).

Model	GIDI		Yield
	PRESSm	PRECORR(m)	PRESSm	PRECORR(m)
GGE1	36324.678	0.8086993	1.0547498	0.8656868
GGE2	21597.326	0.8913184	1.0179156	0.8708956