Table A1 Not accounting for population structure
TraitTRN20-TST8010% Diversity Core20% Diversity Core10% Prediction Core20% Prediction Core
Mexican landraces
 Plant height (PHT)0.451 (0.006)0.4090.4630.4010.454
 Thousand-kernel weight (TKW)0.767 (0.004)0.7470.7560.7520.752
 Test weight (TW)0.687 (0.004)0.6680.6770.6710.687
 Grain hardness (GH)0.617 (0.006)0.5860.6140.5960.613
 Grain protein (GP)0.733 (0.004)0.7150.7290.7100.729
 SDS sedimentation (SDS)0.599 (0.006)0.5730.5700.5630.584
 Grain yield per square meter (GYSM)0.570 (0.005)0.5560.5680.5400.564
Iranian landraces
 Plant height (PHT)0.260 (0.023)0.2070.2710.15400.224
 Thousand-kernel weight (TKW)0.598 (0.014)0.5600.5570.47510.548
 Test weight (TW)0.567 (0.013)0.5320.5540.37900.534
 Grain hardness (GH)0.618 (0.013)0.5750.6100.46280.522
 Grain protein (GP)0.493 (0.017)0.4970.4840.38640.471
 Grain length (GL)0.683 (0.013)0.6260.6670.62810.626
 Grain width (GW)0.688 (0.012)0.6450.6690.44320.645
 SDS sedimentation (SDS)0.456 (0.017)0.4270.4450.36890.3938
  • Mean correlation between predicted and observed values across 30 random cross-validation partitions (SD in parentheses) for a training set of 20% (TRN20) and a testing set of 80% (TST80), of the total Mexican and Iranian collections for several traits measured in a single environment using the GBLUP model. Correlation using 10% diversity and prediction cores and 20% diversity and prediction cores as training sets to predict the remaining 90% and 80% of the collections.