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Number of nodules formed on grafted seedlings 7 to 10 d after inoculation with S. medicae ABS7. Shown is average nodule number per seedling ± se (no. of seedlings).
| Mutant | Allele | Mutant Shoot/Wild-Type Root | Wild-Type Shoot/Mutant Root |
| GY15-2E3 | rdn1-1 | 11 ± 1.7 (7) | 34 ± 7.4 (8) |
| D39-13F-V1 | rdn1-2 | 13 ± 1.0 (15) | 49 ± 14.0 (3) |
| D39-1H-T2 | rdn1-3 | 9 ± 1.0 (11) | 63 ± 2.5 (7) |
| D39-9X-V2 | rdn1-4 | 12 ± 2.1 (8) | 56 ± 4.9 (5) |
