Table 1.

Nine classes of DC changes

Category	Diploid correlation	Polyploid correlation	Description of DC pattern
P+/+	+	+	Both positive but different in r-value
P+/0	+	0	Loss of positive correlation
P+/−	+	−	Inversion from positive to negative correlation
P0/+	0	+	Gain of positive correlation
P0/0	0	0	Neither significant but different in r-value
P0/−	0	−	Gain of negative correlation
P−/+	−	+	Inversion from negative to positive correlation
P−/0	−	0	Loss of negative correlation
P−/−	−	−	Both negative but different in r-value