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Table 3 The LT50 determination and summary of probit analysis to determine LC50 and LC90 concentrations of Beauveria bassiana strains against the third instar of Tuta absoluta larvae in 10 days post incubation

From: Molecular phylogeny and pathogenicity of indigenous Beauveria bassiana against the tomato leafminer, Tuta absoluta Meyrick 1917 (Lepidoptera: Gelechiidae), in Ethiopia

  LT50 (mean ± SE)
AAUB03 AAUB29 AAUB28 AAUB76 AAUB59 AAUB39 AAUB19 AAUB90
Spores·ml-1
 104 3.33± 0.58a 5.33 ± 0.58c 3.33± 0.58a 5.67 ± 0.58cd 5.00 ± 1.00c 3.67 ± 0.58ab 3.33 ± 0.58a 5.00 ± 1.00c
 106 2.33± 0.58a 2.57 ± 0.51a 2.50± 0.00a 2.83 ± 0.29ab 2.93 ± 0.12ab 2.17 ± 0.29a 2.33 ± 0.29a 4.00 ± 0.00c
 108 1.93± 0.12a 2.00 ± 0.00a 2.20± 0.35a 2.33 ± 0.29a 2.50 ± 0.50ab 2.00 ± 0.35a 2.00 ± 0.62a 3.17 ± 0.29c
Summary of probit analysis
 LC50 5.3 × 103 6.5 × 104 1.5 × 103 9.3 × 104 1.1 × 105 1.8 × 104 1.8 × 103 2.6 × 103
 95% FL 1.3 × 103 –7 × 104 2.2 × 104–1.5 × 105 8.6 × 102–4.9 × 103 9.9 × 103–1.3 × 104 2 × 104–3.3 × 105 3.9 × 103–6 × 104 1 × 103–6.1 × 104 1.2 × 103–3.1 × 104
 LC90 2.8 × 105 1.7 × 106 2.9 × 105 1.6 × 106 1.8 × 107 1.6 × 107 7.6 × 105 1.2 × 107
 95% FL 2.1 × 105 –6.3 × 106 6.3 × 105–1.1 × 107 1.9 × 104–2.9 × 106 1.8 × 105–2.7 × 107 4.2 × 106–2.8 × 108 2.2 × 106–3.1 × 108 7.1 × 104–2.1 × 107 1.5 × 106–7.3 × 108
 Int ± SE 1.32 ± 0.91 4.33 ± 0.89 0.85 ± 0.83 1.16 ± 0.72 2.91 ± 0.66 1.54 ± 0.64 0.8 ± 0.75 1.19 ± 0.63
 S ± SE 0.49 ± 0.18 0.9 ± 0.17 0.39 ± 0.16 0.39 ± 0.13 0.58 ± 0.11 0.39 ± 0.11 0.36 ± 0.14 0.35 ± 0.11
p value < 0.001 < 0.001 < 0.012 < 0.003 < 0.001 < 0.001 < 0.001 < 0.001
  1. Legends: FL, fiducial limit; SE, standard error; LT, lethal time taken to kill fifty of experimental organisms; LC, lethal concentration; Int, intercept; S, slope. The same letters in the columns (a, b, c, d, e, and f) showed the mean values without significant difference at p ≤ 0.05