Table
4. Significant1 virulence associations found in isolates of Puccinia coronata in collections at Menashe
and Tel Aviv in 1996 and at Menashe in 1998.
|
Associated
virulences2 |
P value, 19963 |
P value, 1998 |
|
Pc-36 and Pc-56 |
3.5 x 10-4 |
1.8 x 10-4 |
|
Pc-36 and X534 |
3.5 x 10-4 |
1.4 x 10-5 |
|
Pc-36 and X716 |
3.5 x 10-4 |
4.0 x 10-5 |
|
Pc-39 and Pc-554 |
3.5 x 10-3 |
1.9x 10-12 |
|
Pc-45 and Pc-54 |
3.5 x 10-4 |
2.4 x 10-2 |
|
Pc-48 and Pc-52 |
9.9 x 10-3 |
1.9 x 10-7 |
|
Pc-51 and Pc-52 |
3.0 x 10-3 |
3.2 x 10-2 |
|
Pc-56 and X534 |
8.9 x 10-6 |
7.4 x 10-6 |
|
Pc-56 and X716 |
1.4 x 10-3 |
1.2 x 10-4 |
|
Pc-61 and Y347 |
1.8 x 10-3 |
1.2 x 10-5 |
1 Pairs of virulences with associations
significant at P < 0.05 (Fisher’s
exact test) in collections from both years. All of the significant associations
were positive.
2 Virulences are designated according
to the corresponding resistance of the indicated oat crown rust differential
line.
3 Significance values for virulence
associations in 1996 were calculated from combined data from collections in
Menashe and Tel Aviv.
4 Resistance genes Pc-39 and Pc-55 are considered alleles with identical specificity but slightly
different temperature sensitivity for breakdown of resistance (Bonnett, 1996;
Chong & Kolmer, 1993)