Table 4.

Probability values from the analysis of variance for each dataset for the fixed effects of planting date and wheat line. Environments, replicates within each environment, and interactions between random and fixed effects are considered to be random.

Effect	Yield (Mg ha−1)	Protein (%)	Test weight (kg hL−1)	Thousand Kernel weight (g)	Height (cm)	Heads m−2	Heads plant−1
Sites South of 51°N latitudeθ
Planting Date (PD)	0.025	0.072	0.67	0.75	0.051	<0.001	0.73
Wheat Line (WL)	0.044	<0.001	<0.001	<0.001	0.047	0.023	0.86
PDlinear	0.030	0.009	0.54	0.26	0.014	<0.001	0.28
PDquadratic	0.0047	0.18	0.14	0.33	0.47	0.36	0.78
PD x WL	0.48	1.0	0.98	0.98	0.17	0.97	0.57
Sites North of 51°N latitude‡
Planting date (PD)	0.16	0.21	0.60	0.091	0.008	0.28	0.14
Wheat line (WL)	<0.001	<0.001	<0.001	<0.001	0.006	<0.001	<0.001
PDlinear	0.84	0.015	0.22	0.005	0.15	0.039	0.028
PDquadratic	0.22	0.33	0.52	0.86	0.001	0.31	0.54
PD x WL	0.95	0.91	0.94	1.0	0.81	0.96	0.88

θ 6 site years. Lethbridge, AB 2015, 2016, 2017, 2018. Regina, SK 2015, Swift Current, SK 2015

‡ 7 site years. Dawson Creek, BC 2015, 2016. Edmonton, AB 2015, 2016, 2017. Scott, SK 2016, 2017. Bolded values indicate a p - value of less than 0.05.