QTL Mapping of a High Protein Digestibility Trait in Sorghum bicolor
Figure 4
The additive, dominance, and R2 effects of Locus 1—near Xtxp11 which is the LD locus that unfavorably impacts digestibility, while the region—Locus 2—near Xtxp329 is the HD locus that favorably impacts digestibility. (a) Additive effect of QTLs: units are phenotypic values of the turbidity assay. The QTL on the left decreases digestibility, thus it is shown to have a positive additive affect—it increases turbidity; the QTL on the right works conversely. (b) Dominance effect of QTLs: units are phenotypic values of the turbidity assay. The QTL on the left (Locus 1) has a stronger dominance effect than the QTL on the right (Locus 2). This leads to the left QTL contributing more to overall phenotypic variation. (c) for the QTLs: the QTL on the left (Locus 1) correlates stronger to phenotypic values—turbidity averages—than the QTL on the right (Locus 2). Graphs show the effects of the B allele from the HD parent.
