Table 2. Mean of GY (ton ha⁻¹) for each genomic cycle C₀, C₁, C₂, C₃, and C₄, broad-sense heritability (H²), and mean of the four testers at each location (Agua Fria and Tlaltizapan), and combined across the two locations.

Cycle	Agua Fria			Tlaltizapan			Combined
	Entry	H2	Checks	Entry	H2	Checks	GY	H2	Checks
C0	6.65	0.27	5.47	10.40	0.65	8.08	8.52	0.42	6.77
C1	6.49	0.06	5.73	10.29	0.59	9.32	8.40	0.63	7.52
C2	7.02	0.26	6.02	10.20	0.46	9.30	8.62	0.47	7.52
C3	6.88	0.38	5.64	10.95	0.59	9.31	8.92	0.67	7.52
C4	7.13	0.21	5.70	10.96	0.25	9.30	9.05	0.43	7.61
LSD0.05 (C0–C4)	0.402	—	—	0.412		—	0.252		—
LSD0.05 (C1–C4)	0.408	—	—	0.404		–	0.191		—
Average gain per cycle (C0–C4)	0.131	—	—	0.177		—	0.158		—
Average gain per cycle (C1–C4)	0.171	—	—	0.276		—	0.225		—

The average genetic gain in GY across cycles was estimated for each location and across both locations including all selection cycles (C₀–C₄), and including only the genomic selection cycles (C₁–C₄). Least significant differences (LSD) test at the 0.05 probability level including all selection cycles (C₀–C₄) and only the genomic selection cycles (C₁–C₄). The highest value is indicated in boldface.