Table 2.
Estimated additive × additive epistatic (A*A) effects of QTL detected by two-locus interaction analysis using QTL. Network for stem rust severity and infection response in the field in Kenya (2009, 2010, 2011), Canada (2011, 2012) and for seedling stem rust infection type against race TTKSK in growth chamber trials in Morden (2009 and 2012), Canada in the doubled haploid population derived from Carberry/AC Cadillac
| Trait | QTLa1 | Flanking intervala1 | QTLb2 | Flanking intervalb2 | A1*Ac2 effect |
|---|---|---|---|---|---|
| Stem rust severity | QSr.spa-4B.1 | wPt-744434–Xwmc-617 | QSr.spa-7B | wPt-744769–wPt-8561 | −0.59* |
| QSr.spa-6D | wPt-664770–wPt-1695 | QSr.spa-5B.1 | tPt-3144–Xwmc734 | 0.78** | |
| Stem rust infection response | QSr.spa-6D | wPt-664770–wPt-1695 | QSr.spa-5B.1 | wPt-664788–wPt-9205 | 0.12** |
| QSr.spa-3B.1 | wPt-7341–wPt-7984 | QSr.spa-6D | Xcfd49–Xcfd75 | 0.18*** | |
| QSr.spa-4B.2 | wPt-2993–wPt-1046 | QSr.spa-5B.2 | wPt-9724–wPt-4736 | −0.19*** | |
| Stem rust seedling infection type | QSr.spa-6D | wPt-664770–wPt-1695 | QSr.spa-7B | wPt-3939–wPt-5646 | 0.32** |
aFirst QTL1 and interval of a pair of interacting QTL
bSecond QTL2 and interval of a pair of interacting QTL
cA1*A2 is the additive x additive interaction or epistatic effect across environments
Probability levels: * significant at 5 %; ** significant at 1 %, and *** significant at 0.1 %