Table 1.

Training population (TP) 1 was measured for seasonal and mean dry matter yield (DMY) and visual growth scores (GS) across two locations and 3 years.

Trait description	Trait	σ2 g ± SE	σ2 gs ± SE	σ2 gm ± SE	h2g
Dry matter yield	DMY All Cuts	10.09 ± 1.412	6.74 ± 0.691	1.18 ± 0.295	0.65
	DMY Spring	4.89 ± 1.048	5.12 ± 1.016	1.44 ± 0.519	0.35
	DMY Late Spring	11.66 ± 2.050	4.60 ± 1.391	1.23 ± 0.938†	0.50
	DMY Summer	15.06 ± 2.254	8.41 ± 1.153	2.15 ± 0.793	0.61
	DMY Autumn	11.41 ± 1.836	2.05 ± 0.989	0.00 ± 0.000	0.52
Growth score	GS All	0.08 ± 0.014	0.29 ± 0.015	0.07 ± 0.004	0.35
	GS Spring	0.03 ± 0.009	0.16 ± 0.013	0.05 ± 0.010	0.21
	GS Late Spring	0.09 ± 0.018	0.16 ± 0.018	0.02 ± 0.012†	0.34
	GS Summer	0.14 ± 0.022	0.27 ± 0.017	0.04 ± 0.007	0.46
	GS Autumn	0.14 ± 0.026	0.49 ± 0.030	0.01 ± 0.004	0.34
	GS Winter	0.09 ± 0.018	0.20 ± 0.017	0.09 ± 0.013	0.38

^†non-significant at P > 0.05.

Shown are family genetic variance (σ² _g), family-by-site interactions (σ² _gs), family-by-measure interactions (σ² _gm), and associated standard errors (SE), and genomic heritability (h² _g) among perennial ryegrass half-sib families across the two locations.