Table 1 Lethal concentration (LC) and lethal concentration–time (LCT) value for comparing phosphine (PH₃) resistance of PH₃-susceptible (S) strain and PH₃-resistant (R) strain Tribolium castaneum (20 h fumigation at 28℃ ± 1℃)

S

Mean

(Min–Max)

0.008

(0.008–0.009)

0.010

(0.010–0.011)

0.013

(0.012–0.014)

0.017

(0.016–0.019)

0.118

(0.102–0.133)

0.214

(0.194–0.237)

0.389

(0.344–0.451)

0.746

(0.620–0.945)

Slope

42.6 ± 3.57

5.68 ± 0.460

df

22

22

χ2

15.4

14.2

R

Mean

(Min–Max)

2.06

(1.61–2.22

2.42

(2.26–2.53)

2.84

(2.67–3.40)

3.38

(3.01–5.02)

7.86

(3.27–11.2)

20.6

(16.2–25.8)

54.2

(38.6–124)

155

(81.5–832)

Slope

5.68 ± 0.460

– 6.89 ± 1.55

df

22

22

χ2

14.2

113