Table 6. Type of epistatic interactions detected in two hybrids.
| Trait | Data set | Type of epistasis | Sum | Range of the effects | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| I | II | III | XZ | XZV | |||||||||
| XZ | XZV | XZ | XZV | XZ | XZV | XZ | XZV | Min | Max | Min | Max | ||
| SY | RIL | 0 | 0 | 1 | 4 | 11 | 55 | 12 | 59 | −2.48 | 2.64 | −4.70 | 5.43 |
| BC | 0 | 0 | 0 | 1 | 8 | 1 | 8 | 2 | −1.64 | 1.77 | −1.54 | 0.94 | |
| MPH | 0 | 0 | 0 | 1 | 4 | 13 | 4 | 14 | −1.42 | 1.97 | −2.82 | 2.02 | |
| LY | RIL | 0 | 0 | 1 | 1 | 9 | 54 | 10 | 55 | −1.05 | 1.06 | −1.88 | 2.08 |
| BC | 0 | 0 | 0 | 1 | 10 | 6 | 10 | 7 | −0.68 | 0.85 | −0.69 | 0.83 | |
| MPH | 0 | 0 | 0 | 1 | 4 | 8 | 4 | 9 | −0.59 | 0.85 | −1.11 | 0.83 | |
| BNP | RIL | 0 | 0 | 0 | 2 | 15 | 65 | 15 | 67 | −0.70 | 0.63 | −1.16 | 1.27 |
| BC | 0 | 0 | 0 | 0 | 7 | 2 | 7 | 2 | −0.49 | 0.53 | 0.17 | 0.28 | |
| MPH | 0 | 0 | 0 | 1 | 3 | 23 | 3 | 24 | −0.43 | 0.45 | −0.73 | 0.56 | |
| BW | RIL | 0 | 0 | 4 | 1 | 32 | 10 | 36 | 11 | −0.10 | 0.10 | −0.09 | 0.10 |
| BC | 0 | 0 | 1 | 2 | 25 | 4 | 26 | 6 | −0.06 | 0.06 | −0.05 | 0.06 | |
| MPH | 0 | 0 | 0 | 0 | 2 | 4 | 2 | 4 | −0.02 | 0.05 | −0.06 | 0.06 | |
| LP | RIL | 0 | 0 | 4 | 4 | 44 | 18 | 48 | 22 | −0.53 | 0.51 | −0.52 | 0.96 |
| BC | 0 | 0 | 1 | 0 | 26 | 4 | 27 | 4 | −0.49 | 0.29 | −0.23 | 0.23 | |
| MPH | 0 | 0 | 0 | 0 | 4 | 1 | 4 | 1 | −0.20 | 0.22 | −0.17 | −0.17 | |
Type of epistasis: (I) two loci with main-effect QTL, (II) a locus with main-effect QTL and a locus without significant main-effect QTL, and (III) two loci without significant main-effect QTL. Sum: Total number of epistatic interactions. XZ, XZ hybrid; XZV, XZV hybrid; SY, seed cotton yield; RIL, recombinant inbred line population; BC, backcross population; MPH, mid-parental heterosis; LY, lint yield; BNP, bolls per plant; BW, boll weight; LP, lint percent.