Table 5. Epistatic interactions of stem rust QTL in Rusty × PI 192051-1 population.
| Race | QTL a | RIL group | Number of RILs | Mean of disease b | Std Dev | Tukey’s test c |
|---|---|---|---|---|---|---|
| QFCFC | QSr.ace-4A, QSr.ace-7A | QSr.ace-4A & QSr.ace-7A | 51 | 5.11 | 0.91 | A |
| QSr.ace-7A | 29 | 5.55 | 1.21 | A | ||
| QSr.ace-4A | 12 | 7.75 | 0.97 | B | ||
| None | 30 | 7.63 | 0.93 | B | ||
| TMLKC | QSr.ace-4A, QSr.ace-7A | QSr.ace-4A & QSr.ace-7A | 50 | 5.18 | 0.65 | A |
| QSr.ace-7A | 30 | 5.38 | 0.88 | A | ||
| QSr.ace-4A | 14 | 7.79 | 0.8 | B | ||
| None | 32 | 7.88 | 0.71 | B | ||
| TKTTF | QSr.ace-4A, QSr.ace-7A | QSr.ace-4A & QSr.ace-7A | 57 | 5.90 | 0.95 | A |
| QSr.ace-7A | 42 | 6.40 | 1.03 | B | ||
| QSr.ace-4A | 21 | 8.71 | 0.12 | C | ||
| None | 33 | 8.82 | 0.40 | C | ||
| TPMKC | QSr.ace-1A, QSr.ace-7A | QSr.ace-1A & QSr.ace-7A | 41 | 4.96 | 0.13 | A |
| QSr.ace-7A | 38 | 5.49 | 1.21 | B | ||
| QSr.ace-1A | 14 | 7.36 | 1.15 | C | ||
| None | 25 | 7.76 | 0.83 | C | ||
| JRCQC | QSr.ace-2B-a, QSr.ace-7A | QSr.ace-2B-a & QSr.ace-7A | 57 | 5.21 | 0.58 | A |
| QSr.ace-7A | 46 | 5.43 | 0.86 | A | ||
| QSr.ace-2B-a | 28 | 8.69 | 0.89 | B | ||
| None | 25 | 8.79 | 0.43 | B | ||
| TTKSK | QSr.ace-2B-b, QSr.ace-7A | QSr.ace-2B-b & QSr.ace-7A | 50 | 4.35 | 0.27 | A |
| QSr.ace-7A | 47 | 4.56 | 0.4 | A | ||
| QSr.ace-2B-b | 26 | 8.26 | 1.12 | B | ||
| None | 31 | 8.27 | 1.02 | B |
a
All QTL were identified using composite interval mapping except for the QTL on 2B that were mapped using multiple interval mapping (MIM) and MIM-based on a general linearized framework (MIM-GLZ) for race TTKSK and JRCQC respectively.
b
Disease scores were based on a linearized Stakman scale (0-9) for all races.
c
Numbers in the same column followed by the same letter are not significantly different at P = 0.05.