Figure 1.

A framework linkage map and positions of seed dormancy QTL identified in this and previous research. The map was marked with RM loci segregating in the BC₁F₁ EM93-1//EM93-1/LD population. Asterisks indicate segregation distortion loci in favor of the allele from EM93-1 (*) or LD (**). Black bars indicate C.I. (equivalent to one-LOD support lengths) of qSD, qAn, or qHC detected in this BC₁F₁ population (Figure 2B). Five-point stars indicate qSDs detected in the BC₂F₁ (9) (Figure 3) and/or BC₂F₁ (139) (Figure 4), but not in this BC₁F₁ population. Ovals indicate approximate positions of qSDs previously detected in the BC₁F₁ EM93-1//EM93-1/SS18-2 population or its advanced generations (Gu et al. 2004; Ye et al. 2010). LD and SS18-2 are temperate and tropical ecotypes of weedy rice, respectively. Ch, chromosome; LD, pure line LüDao; LOD, logarithm of the odds; qAn, QTL for awn; qHC, QTL for hull color; qSD, QTL for seed dormancy; QTL, quantitative trait loci; RM, rice microsatellite.