Residual and interacting Cycle Time QTLs. Pairwise scan of cycle time based on 34 progeny plus parent lines. Lower right triangle shows additive effects; the circle indicates the additive effect of C1M48 with the chromosome 14 QTLs. The upper left triangle shows the interaction between C1M48 and C4M81. LOD scores are represented by the vertical color bar with the red colors being more significant than the blue colors.