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Table 3 Cross-resistance of propiconazole-resistant isolates of Ustilaginoidea virens to other DMIs

From: Monitoring and analysis of rice pathogen Ustilaginoidea virens isolates with resistance to sterol demethylation inhibitors in China

Isolates

Epoxiconazole

Difenoconazole

Tebuconazole

EC50 (μg/mL)

EC90 (μg/mL)

RF

Resistance level

EC50 (μg/mL)

EC90 (μg/mL)

RF

Resistance level

EC50 (μg/mL)

EC90 (μg/mL)

RF

Resistance level

2017–11

0.037

0.18

/

 

0.066

0.33

/

 

0.11

0.47

/

 

2017–48

0.039

0.14

/

 

0.11

0.70

/

 

0.068

0.25

/

 

2017–2

0.17

3.68

4.6

LR

0.38

11.56

4.3

LR

0.33

8.23

3.7

LR

2017–6

0.099

1.86

2.7

LR

0.048

51.76

0.5

/

0.048

11.70

0.5

/

2017–61

0.10

1.01

2.7

LR

0.29

2.50

3.3

LR

0.19

1.45

2.1

LR

2017–170

0.083

2.76

2.2

LR

0.23

6.06

2.6

LR

0.083

15.33

0.9

/

2017–176

0.12

5.20

3.2

LR

0.53

12.28

6.0

LR

0.15

12.42

1.7

LR

2017–179

0.11

6.45

3.0

LR

0.18

74.42

2.0

LR

0.20

25.54

2.2

LR