Table 3.

Interactions between VRN-D4 and other vernalization genes

Vrnx	P VrnX	P Vrn-D4	P interaction	R 2	VrnX dominancea	Vrn-D4 dominancea	Vrn-D4 –VrnX one dose effectb
Vrn-A1	<0.0001	<0.0001	<0.0001	0.96	95.9 %	53.7 %	18.5 days***
Vrn-B1	<0.0001	<0.0001	<0.0001	0.91	55.6 %	30.7 %	1.0 daysNS
Vrn-D1	<0.0001	<0.0001	<0.0001	0.89	78.2 %	42.9 %	14.3 days***
Vrn-B3	<0.0001	<0.0001	<0.0001	0.87	71.0 %	31.3 %	18.9 days**

Probability of main effects and interactions in the 2 × 3 factorial ANOVA, proportion of variation explained by the model (R ²) of the model, degree of dominance and relative effect of single dose allele combination

^aDegree of dominance was calculated using LS Means and the formula described in “Materials and methods”

^bRelative single dose effect was calculated using LS Means and the formula described in “Materials and methods”. Positive values indicate that plans carrying the Vrn-D4 allele flowered later than plants carrying the VrnX allele

** P < 0.001, *** P < 0.0001 and ^NS P > 0.05