Table 2.

The parameters of multivariate analysis of brown rice under different nitrogen levels.

Multivariate Analysis	Group	Positive Ion Model			Negative Ion Model
		R2X	R2Y	Q2	R2X	R2Y	Q2
PLS-DA	N2 vs. N0	0.305	0.994	0.757	0.389	0.999	0.816
	N6 vs. N0	0.471	0.999	0.854	0.467	0.997	0.831
	N6 vs. N2	0.412	1.0	0.896	0.415	0.998	0.812