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Table 2 Resistance stability and pathogenicity of the ZJ0712-resistant Podosphaera xanthii isolates

From: Evaluation of the risk of development of resistance to QoI fungicide ZJ0712 in Podosphaera xanthii under greenhouse conditions

Isolate

EC50 (μg/mL)/RFa

Lesion area (mm2)

1st generation

10th generation

FSCb

BH17

0.01/–

0.01/–

–

97.67 ± 8.76 ac

NR1

2.08/208

1.64/164

0.79

85.50 ± 9.99 a

NR2

1.87/187

1.79/179

0.96

93.00 ± 11.29 a

NR3

2.93/293

2.18/218

0.74

102.00 ± 6.96 a

NR4

2.94/294

2.27/227

0.77

96.00 ± 12.43 a

NR5

2.49/249

2.09/209

0.84

93.33 ± 18.26 a

NR6

2.71/271

2.35/235

0.87

95.48 ± 7.83 a

NR7

2.24/224

1.96/196

0.88

90.67 ± 10.27 a

  1. aRF, resistance factor, ratio of EC50 of fungicide-resistant isolates relative to 0.01 μg/mL (the sensitivity baseline of P. xanthii to ZJ0712, Wang et al. 2007)
  2. bFSC, factor of sensitivity change; the ratio of the RF value at the tenth generation to that at the first generation
  3. cValues followed by the same letter within a column do not differ significantly (P < 0.05)
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Phytopathology Research

ISSN: 2524-4167