FIGURE 2.

Performance of genomic selection (GS) across five cycles. Each panel represents one trait, shattering (A), free threshing (B), spike yield (C), and spikelets per inflorescence (D). The x-axis is the cycle that was used as the prediction population. Colored bars represent the prediction ability for each of the four other cycles, where each cycle forms the training population. For comparison, the fivefold cross-validation within cycle is represented for each training and prediction cycle, which usually provides the highest predictive ability. The y-axis is the prediction ability which is the correlation between the GS predicted value and the phenotypic best linear unbiased predictor (BLUP). Error bars represent the 95% confidence interval for the correlation value.