QTL for high α-tocopherol concentration on chromosome 9. (A). Graphical overview of the genetic map on chromosome 9. A vertical thick bar indicates soybean chromosome 9. Molecular markers and genetic distances (Kosambi cM) are depicted at the right and left sides of chromosome 9, respectively. (B). LOD value profile from MQM mapping of α-tocopherol concentration on chromosome 9. Y-axis corresponds to the genetic map with distances expressed in (A). Horizontal line corresponds to the LOD value. Solid red and dashed blue lines indicate the LOD scores calculated using F2 seed and F2 plant population, respectively.