TABLE 5.
Comparison of features of the two Solanum studies of hybrid incompatibility
| Population 1 | Population 2 | |
|---|---|---|
| Wild species features | ||
| Predominant mating system | Outcrossing | Outcrossing |
| Mating system of wild species parental accession | Self-incompatible | Self-compatible |
| Silent-site divergence from SL (%) | 4.4 | 4.2 |
| Mapping population structure/features | ||
| Genome coverage, no. NILs analyzed (%) | 85 | >98 |
| No. NILs analyzed | 71 | 71 |
| No. NILs, single introgression only | 47 | 71 |
| Average introgression length (% of genome) | 48.5 (4) | 25.0 (1.98) |
| Range of introgression lengths (% of genome) | 4.5–135(0.35–10.7) | 2.3–57.2(0.18–4.54) |
| Hybrid incompatibility results: no. QTL detected (average phenotypic effect, Δ%) | ||
| PN | 3a (−39.2) | 3 (−43.7) |
| PF | 8 (−36.8) | 7 (−35.9) |
| SSS | 8a (−78.7) | 7a (−65.8) |
| SSC | 1 (121.7) | 1 (60.9) |
Population 1 refers to the S. habrochaites × S. lycopersicum study (Moyle and Graham 2005); population 2 refers to the S. pennellii × S. lycopersicum study (this study).
a
Excludes one detected QTL that increased hybrid fertility.