Table 2. Virulences of the most frequent pathotypes identified from powdery mildew populations from North Dakota and the Czech Republic

Pathotype

Frequency (%)

Virulence

North Dakota

20443

24443

24403

 

20

16

7

 

Va3,VLa-Vp,Vh,Va8

Va3,Va12,VLa-Vp,Vh,Va8

Va3,Va12,VLa-Vh,Va8

Czech Republic

5776

5576

4767

 

3

3

3

 

Va1,Va6,Va7,Va9,Va12,Va13,Vk,VLa,Vg,-V(Bw)

Va1,Va6,Va7,Va12,Va13,Vk,VLa,Vg,-V(Bw)

Va6,Va7,Va9,Va12,Vk,VLa,Vat,Vg,-V(Bw)