Ordas et al. BMC Genomics 2010, 11:174 http://www.biomedcentral.com/1471-2164/11/174 Page 4 of 10 Figure 1 Molecular linkage map and location of the QTLs detected in the RILs population derived from EP42 × EP39. S = silking, PH = plant height, H = grain humidity, Y = yield, STL = stalk tunnel length, RSTL = relative stalk tunnel length, CDR = cob damage rating.