TABLE 6

Positions and estimated effects of putative QTL for fertility traits

TraitQTL position (cM)aSupport interval for positionaModelbQTL effectc
sim BCsec BC
Testicular atrophyX-15.010.3-17.7II−0.279−0.022d
X-27.424.4-33.4II−0.285−0.018d
2-49.544.5-58.6II+0.187−0.007d
Absence of cystsX-15.011.8-17.7II−0.453−0.315
X-31.428.6-33.6I−0.401−0.103d
X-43.441.4-48.6II−0.235−0.306
3-79.872.8-84.4II+0.063d+0.229
Quantity of spermX-22.719.3-27.3II−1.165−0.470
X-33.430.5-37.6I−0.943+0.255d
3-95.794.7-100.3II−0.228d+0.448
  • a When the QTL is significant in only one backcross, the position and support interval (two-LOD drop-off) are given for that QTL. When both backcrosses have significant QTL, the results are presented for the QTL with the highest LOD score.

  • b The estimated positions and effects for model II can be influenced by linked QTL, if present.

  • c Effects, reported as given by QTL Cartographer, represent deviation from the fertile parental phenotype, so QTL with negative effects confer sterility.

  • d LOD score was not significant.