Table 3.
Number of Rhizobium isolates of each chromosomal genotype that carry a sym plasmid of a given nod genotype
| Chromosomal genotype |
nod genotype
|
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| FA1 | FA2 | FA3 | HA1 | HA2 | HA3 | B1 | B2 | B3 | B4 | C | |
| 1a | 15 | 1 | 1 | 9 | 5 | . | . | . | . | . | . |
| 1b | . | . | . | . | 1 | . | . | . | . | . | . |
| 1c | 1 | . | . | . | . | . | . | . | . | . | . |
| 1d | . | . | . | . | . | 1 | . | . | . | . | . |
| 2a | . | . | . | . | . | . | 7 | . | . | . | . |
| 2b | . | . | . | . | . | . | 15 | 1 | . | . | 4 |
| 2c | . | . | . | . | . | . | 5 | . | . | 1 | . |
| 2d | . | . | . | . | . | . | 1 | . | 1 | . | . |
., indicates zero isolates. nod genotypes were distributed nonrandomly across chromosomal genotypes (χ2 = 87.4, df = 12, P < 0.000). Chi-square analysis was performed after omitting cells with expected values <1.