Results of QTL mapping and fivefold cross-validation.

Number of detected QTL (QTLDS), proportion of genotypic variance (%) explained by the detected QTL across all families in the data set (pG-DS), number of QTL (QTLES) and proportion of genotypic variance averaged over estimation sets (pG-ES) and averaged over test sets (pG-TS), and relative bias (%) in the estimation of pG.