Table A3 Not accounting for population structure in Mexican and Iranian landraces
TraitModelaTRN20-TST8010% Diversity Core20% Diversity Core10% Prediction Core20% Prediction Core
Mexican collection
 DTHM1:E + A0.000 (0.010)−0.0120.013−0.0090.001
M2:E + A + G0.696 (0.004)0.6760.6920.6770.689
M3:E + A + G + G × E0.738 (0.004)0.7180.7320.7180.735
M4:E + A + G + G × E + A × E0.739 (0.004)0.7170.7320.7200.735
 DTMM1:E + A−0.002 (0.009)−0.0160.009−0.0040.005
M2:E + A + G0.737 (0.003)0.7210.7350.7170.733
M3:E + A + G + G × E0.762 (0.003)0.7450.7590.7400.757
M4:E + A + G + G × E + A × E0.762 (0.003)0.7460.7580.7420.756
Iranian collection
 DTHM1:E + A−0.003 (0.021)0.0150.008−0.0150.019
M2:E + A + G0.525 (0.088)0.4750.5210.5030.516
M3:E + A + G + G × E0.600 (0.056)0.5520.6000.5530.577
M4:E + A + G + G × E + A × E0.598 (0.052)0.5440.5910.5580.581
 DTMM1:E + A−0.001 (0.023)0.0035−0.00860.0000.009
M2:E + A + G0.469 (0.106)0.43960.45570.4690.475
M3:E + A + G + G × E0.587 (0.032)0.54060.58890.5490.581
M4:E + A + G + G × E + A × E0.587 (0.030)0.53370.58410.5560.584
  • Mean correlation across 30 random partitions between observed and predicted values of four models for two traits, days to heading (DTH) and days to maturity (DTM), across two environments (standard deviation in parentheses), for 20% training (TRN20) and 80% testing (TST80) sets of the total number of accessions in the Mexican and Iranian collections for four models (M1–M4). Correlations between observed and predictive values for 10% and 20% diversity and prediction core sets.

  • a Models: E, Environment; A, accession; G, genomic relationship; A × E, accession × environment interaction; G × E, genomic × environment interaction.