Fig. 3. Interval mapping of a major QTL on linkage group b06 found to condition resistance to Thrips palmi in the population BAT 881 x G 21212, in the seasons 1999A, 1999B, and 2000B, using microsatellite and RAPD markers. Resistance traits are explained by letters close to the corresponding curve. Microsatellite markers are indicated in bold and the significance threshold is indicated by a line at LOD = 2.8.