Fig. 1: A major QTL locus on chromosome 3.

A major QTL was mapped to a ~10.185-Mb genomic DNA region between markers BrID10459 and BrID10401 in RC_BC₂DH (a) and YS_BC₂DH (b) populations in autumn of 2007 and the spring of 2009, and in the spring of 2009 and the summer of 2009, respectively