Table 4.
Identification of Plasmopara halstedii pathotypes isolated in year n-1 and n+4 and percentage of seedlings of H1, H2, H3 and H4, the 4 hybrid forms, showing sporulation with each pathotype.
| Pathotypes | D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | XRQ | YVQ | Rha340 | H1 | H2 | H3 | H4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100a | S | S | R | R | R | R | R | R | R | R | R | R | 1% | 1% | 1% | 0% |
| 304b | S | S | R | R | R | R | R | R | S | R | S | R | 3% | 1% | 7% | 3% |
| 314b | S | S | R | S | R | R | R | R | S | R | S | R | 12% | 9% | 77% | 40% |
| 700b | S | S | S | R | R | R | R | R | R | R | R | R | 82% | 2% | 2% | 0% |
| 710a | S | S | S | S | R | R | R | R | R | R | R | R | 100% | 4% | 1% | 0% |
| 710b | S | S | S | S | R | R | R | R | R | R | R | R | 96% | 5% | 2% | 1% |
| 704b | S | S | S | R | R | R | R | R | S | R | S | R | 73% | 68% | 87% | 72% |
| 714b | S | S | S | S | R | R | R | R | S | R | S | R | 82% | 74% | 85% | 80% |
H1-H4 = hybrids OLEOSEM (France); D1-D9 = international differential lines (Tourvieille de Labrouhe, 1999); XRQ, YVQ = lines INRA (France); RHA340 = line USDA (USA);
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