Table 1.

Marker-based estimates of genetic (σ²_g), environment (σ²_e), genotype x environment (σ²_gxe) and error (σ²_ϵ) variance components, variance ratios, and narrow-sense heritabilities across the target South Asia Bread Wheat Genomic Prediction Yield Trial sites and the Obregon selection environment that had the highest prediction accuracy for the target site.

Variance components, variance ratios, and heritabilities	Cycle	Bangladesh Jamalpur	India Jabalpur	India Ludhiana	India Pusa	Pakistan Faisalabad
σ2g	2014–2015		0.08	0.10	0.10
σ2e			1.74	0.33	0.90
σ2gxe			0.06	0.07	0.09
σ2ϵ			0.11	0.11	0.16
σ2g:σ2e:σ2gxe:σ2ϵ			1:21.8:0.8:1.3	1:3.3:0.7:1.2	1:9.4:0.9:1.7
h2			0.08	0.38	0.18
σ2g	2015–2016	0.05	0.09	0.13	0.08	0.03
σ2e		1.16	0.32	0.15	0.46	0.18
σ2gxe		0.06	0.10	0.05	0.09	0.04
σ2ϵ		0.09	0.18	0.10	0.14	0.06
σ2g:σ2e:σ2gxe:σ2ϵ		1:23.8:1.3:2	1:3.6:1.1:2	1:1.1:0.4:0.8	1:5.8:1.1:1.8	1:7.3:1.5:2.5
h2		0.08	0.36	0.64	0.26	0.21
σ2g	2016–2017		0.04	0.05	0.05	0.08
σ2e			0.18	0.14	0.26	1.45
σ2gxe			0.05	0.09	0.07	0.08
σ2ϵ			0.17	0.11	0.12	0.13
σ2g:σ2e:σ2gxe:σ2ϵ			1:4.1:1.2:3.8	1:2.8:1.8:2.1	1:5.6:1.5:2.6	1:19.2:1:1.8
h2			0.33	0.42	0.26	0.09
σ2g	2017–2018		0.11	0.05	0.05
σ2e			3.90	0.13	0.41
σ2gxe			0.10	0.07	0.05
σ2ϵ			0.12	0.11	0.10
σ2g:σ2e:σ2gxe:σ2ϵ			1:37.1:0.9:1.2	1:2.6:1.4:2.2	1:8.8:1.1:2.1
h2			0.05	0.44	0.19