Avir/vircompetition | Pair |
Avir
|
vir
| Year 1 | Year 2 | Selective value of Avir |
---|
| | | | Cultivar 1* | Cultivar 2** | Cultivar 1* | Cultivar 2** | |
---|
Avir9/vir9
|
A
|
i1
|
i5
| 38 ± 2.7 | 26 ± 0.2 | 24 ± 1 | 32 ± 10.2 | 0.15 |
|
E
|
i2
|
i5
| - | - | 26 ± 9.8 | 32 ± 0.2 | 0.16 |
|
B
|
i2
|
i6
| 80 ± 3.5 | 46 ± 6.4 | 74 ± 0.2 | 76 ± 0.3 | -0.17 |
|
F
|
i1
|
i6
| - | - | 71 ± 0.9 | 83 ± 0.3 | -0.27 |
|
C
|
i3
|
i7
| 85 ± 4.4 | 70 ± 11.6 | 74 ± 5.3 | 83 ± 3.3 | -0.29 |
|
D
|
i4
|
i8
| 83 ± 8.6 | 72 ± 5 | 70 ± 3.2 | 85 ± 5.1 | -0.28 |
Avir4/vir4
|
G
|
i9
|
i11
| - | - | 22 ± 0.1 | 18 ± 0.9 | 0.24 |
|
H
|
i10
|
i12
| 23 ± 0.8 | 44 ± 6.3 | 28 ± 5.1 | 20 ± 0.3 | 0.17 |
Avir6/vir6
|
I
|
i13
|
i15
| 17 ± 1.4 | 14 ± 1.9 | 25 ± 6.1 | 25 ± 0.9 | 0.24 |
|
J
|
i14
|
i16
| 29 ± 14.5 | 28 ± 9.9 | 20 ± 2.2 | 12 ± 1.9 | 0.22 |
- Mean (± S.E.) frequencies (%) of virulent (vir) isolates relative to avirulent (Avir) isolates, measured at the end of the growing season. Different pairs (A-J) were set up for each of 3 virulence genes (9, 4, 6). Each pair was started from an initial 50:50 ratio and competed on two host cultivars and in two field seasons (year). Selective values of Avir isolates were estimated according to Leonard [28] and represent averages over cultivars and years. *Cultivar 1 correspond to cv. Thésée for Avir9/vir9 and cv. Audace for Avir4/vir4 and Avir6/vir6, respectively. ** Cultivar 2 correspond to cv. Récital for Avir9/vir9 and cv. Baltimore for Avir4/vir4 and Avir6/vir6, respectively.