Table 1.

The Locations and Effects of QTL Affecting Freezing Injuries Measured by Electrical Conductivity in Two Successive Years (1995 and 1996) for Bivalent Tetraploida Alfalfa

Linkage group[ii] Marker interval Year LR[iii] Threshold Additive effect R 2c MarkerQTL Phase p̂ [v]
4A ugac118pl–vgle9p119954.639.600.5
1996 14.91 9.66 33.56 12.5 A2 0.4
5A vg2a2p1–vg2e5p119952.089.850.6
1996 15.91 10.03 17.93 8.6 A2 0.6
5B vg2a11p1–vg1h10p1 1995 13.11 7.84 15.69 8.7 A2 0.6
19963.858.470.6
6A ugac281p1–vg2c2p119955.538.780.6
1996 14.12 8.81 17.53 9.2 A2 0.6
8A ugac235p1–ugac291p1 1995 14.20 8.40 19.48 8.5 A2 0.6
1996 22.72 8.46 21.56 13.7 A2 0.6

[i] Significant QTL, as evidenced by larger log-likelihood ratios (LRs) than the thresholds calculated from 200 permutation tests, are indicated in boldface.

[ii] Linkage groups refer to Brouwer and Osborn (1999).

[iii] The LR between the full model (there is a QTL) and the reduced model (there is no QTL).

[iv] The proportion of the total phenotypic variance explained by the QTL detected.

[v] The preferential pairing factor (p) is estimated by a grid approach within its space. The estimates ofp are also given for nonsignificant QTL.