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Fig. 2. Composite interval mapping LOD scans of linkage groups where quantitative trait loci were detected for spot blotch, net type net blotch (NTNB), Septoria speckled leaf blotch (SSLB), leaf scald, and powdery mildew in the OUH602/Harrington recombinant inbred line population. The horizontal lines indicate significance thresholds for each experiment, estimated from 1000 permutations of the data to maintain the experiment-wise Type I error rate below 5%. A. Spot blotch resistance on chromosome 1(7H). B. NTNB resistance on chromosomes 3(3H), 4(4H), and 5(1H). C. SSLB resistance on chromosome 2(2H) and 6(6H). D. Leaf scald resistance on chromosome 5(1H). E. Powdery mildew resistance on chromosomes 4(4H) and 5(1H). Solid line, experiment 1; broken line, experiment 2. The threshold values for each experiment are given in Table 2.