Table 2. Genetic relationship between (A_{ij between}) and within (A_{ij within}) clusters and average predictive ability, when using the cluster in two training populations to predict another cluster, for yield, test weight, and protein based on single markers.

				Predictive ability
Clusters	Number of individuals	Aij between	Aij within	Yield	Test weight	Protein	Ave. across traits
Cluster 1	176	−0.12 ± 0.001	0.13 ± 0.002	0.32	0.38	0.28	0.33
Cluster 2	89	−0.16 ± 0.001	0.51 ± 0.005	0.29	0.34	0.19	0.27
Cluster 3	118	−0.14 ± 0.001	0.28 ± 0.003	0.28	0.31	0.23	0.27
Average for each trait				0.30	0.34	0.23