Table 2 Susceptibility of Bemisia tabaci to matrine after 24-h exposure to Lecanicillium muscarium.

From: Toxicological and biochemical basis of synergism between the entomopathogenic fungus Lecanicillium muscarium and the insecticide matrine against Bemisia tabaci (Gennadius)

Treatments

Mortality

LC50

95% C.I.

Slope

Chi-square

CTC

Type of action

Matrine (mg/L)

0.005

19.07 ± 0.87 e

0.97 ± 0.06 a

0.63–1.28

0.06

19.56

—

—

0.05

27.41 ± 1.23 d

0.5

42.36 ± 1.89 c

5

63.49 ± 3.32 b

15

82.18 ± 4.16 a

Control

5.2 ± 0.37 f

L. muscarium (Conidia/mL)

1 × 104

28.97 ± 1.04 d

0.13 ± 0.001 b

0.10–0.20

0.07

11.23

—

—

1 × 105

42.8 ± 2.31 c

1 × 106

61.03 ± 3.35 b

1 × 107

72.36 ± 4.56 a

1 × 108

79.81 ± 5.13 a

Control

5.3 ± 0.36 e

CT4

0.005 + 1 × 105

57.19 ± 3.81 d

0.02 ± 0.001 c

0.01–0.03

0.04

14.36

223

Synergistic

0.05 + 1 × 106

69.87 ± 3.56 c

0.5 + 1 × 107

82.34 ± 4.23 b

5 + 1 × 108

96.78 ± 6.31 a

Control

5.3 ± 0.36 e

  1. CT4 is combined treatment of Lecanicillium muscarium and, matrine mixed at 5:5 ratio; CTC stands for co-toxicity coefficients; Mortalities (% ± S.E.) mentioned for each treatment followed by different letters are significantly different (Tukey’s test, P < 0.01).
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