Table 4.
Evaluation of confirmed QTL for their contribution for resistance to SCN HG types 1.2.5.7 (PA2), 0 (PA3), 1.3.5.6.7 (PA14), and 1.2.3.4.5.6.7 (LY2)
| Population | Genotype | Phenotype [FI % of SCN HG type (SCN isolate)] | Number of RILs | ||||
|---|---|---|---|---|---|---|---|
| Rhg1 | QTL on Chr. 20 | 1.2.5.7 (PA2) | 0 (PA3) | 1.3.5.6.7 (PA14) | 1.2.3.4.5.6.7 (LY2) | ||
| Pop1 | − | − | 104.0 ± 31.0 | 79.3 ± 14.0 | 85.5 ± 15.1 | 109.4 ± 26.6 | 13 |
| + | − | 77.9 ± 27.3a | 14.9 ± 6.9a | 42.5 ± 20.5a | 82.7 ± 21.9a | 10 | |
| + | + | 65.0 ± 26.4a | 9.2 ± 4.5a,b | 24.7 ± 19a,b | 43.3 ± 18.4a,b | 14 | |
| Pop2 | − | − | 86.3 ± 23.3 | 75.4 ± 13.3 | 63.2 ± 24.6 | 119.9 ± 26.8 | 12 |
| + | − | 68.4 ± 15.9 | 10.7 ± 5.2a | 21.6 ± 4.1a | 78.7 ± 20.4a | 9 | |
| + | + | 52.3 ± 15.5a | 8.3 ± 4.2a | 11.6 ± 6.2a,b | 49.7 ± 27.1a,b | 7 | |
Pop1 population of 119 F7 RILs developed from a Hutcheson × PI 437655 cross
Pop2 population of 192 F7 RILs developed from a Williams 82 × PI 437655 cross
− The allele from Hutcheson in Pop1 or the allele from Williams 82 in Pop2
+ The allele from PI 437655
a P < 0.05 by a Student’s t test in comparison with the value of −/−
b P < 0.05 by a Student’s t test in comparison with the value of +/−