Table 1

Table 3. Mean leaf area infected, relative to cv. Golden Promise, of mlo cultivars inoculated with isolates previously giving varying infection levels on Apex and Riviera.

 

 

No. of isols.

Chariot

Landlord

Riviera

Chalice

Apex

Hart

Derkado

Decanter

Static

Dandy

Century

Atem

Test 1

 

 

 

 

 

 

 

 

 

 

 

 

 

Apex +

7

2.8

0.1

1.0

14.0

2.3

1.8

2.9

0.8

0.6

0.1

0.3

0.2

Apex 0

7

0.2

0

0.2

8.6

3.1

0.2

1.1

0

0

0

0

0

Mlo isols

7

6.7

1.3

1.5

14.4

6.0

1.2

0.5

1

0.9

0.4

0.4

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Test 2

 

 

 

 

 

 

 

 

 

 

 

 

 

Apex +

13

3.2

0.6

2.3

6.4

2.0

1.0

5.1

0.2

0.2

-

-

-

Apex 0

14

1.4

0.2

1.0

5.0

1.3

0.6

0.4

0

0.1

-

-

-

mlo isols

10

0.2

0.4

2.2

8.2

1.1

0.6

0.2

0.4

0.4

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Test 3

 

 

 

 

 

 

 

 

 

 

 

 

 

Apex +

10

3.6

0.5

2.1

3.9

1.8

1.8

0.5

0.3

0.8

-

-

-

Apex 0

10

0.7

0

0

3.1

4.6

0.2

0

0

0

-

-

-

mlo isols

6

3.8

0.5

0.5

3.8

4.2

1.4

0.5

0.5

1.4

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Test 4

 

 

 

 

 

 

 

 

 

 

 

 

 

Apex +

10

12.4

-

15.8

19.9

21.2

10.5

5.2

5.2

4.0

-

-

-

Apex 0

11

3.5

-

4.8

12.3

8.7

5.1

1

0.7

0.5

-

-

-

mlo isols

5

10.1

-

16.2

23.3

21.0

7.4

1.6

4.2

3.3

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Test 5

 

 

 

 

 

 

 

 

 

 

 

 

 

Apex +

15

2.7

0.3

3.2

7.1

5.6

-

-

-

-

-

-

-

Apex 0

4

0

0

0

0.6

0

-

-

-

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Test 6

 

 

 

 

 

 

 

 

 

 

 

 

 

Apex +

19

2.8

1.6

6.1

8.1

8.9

-

-

-

-

-

-

-

Apex 0

6

0.1

0.4

0.4

8.8

2.6

-

-

-

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Test 7

 

 

 

 

 

 

 

 

 

 

 

 

 

Apex +

32

3.3

1.0

6.9

13.9

12.6

-

-

-

-

-

-

-

Apex 0

6

0.9