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Genetic linkage map and graphical display of QTL for PM on chromosomes 1B (a), 2B (b) and 6A (c). Markers flanking the QTL are in red (Blue bars showed the positions of the QTL); Graphical display of QTL detected in separate trials are shown in different colors. The black dashed line represents the log-of-odds (LOD) score threshold of 2.50.
