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Table 2 Duration of different treated stages of O. nubilalis under different constant temperatures

From: Efficacy of climatic change on the development of two strains of stalk borer, Ostrinia nubilalis (Lepidoptera: Crambidae), treated with challenger/silica nanoparticles

Temperature Strain locality Eggs stage Larval stage Prepupal stage Pupal stage
15 °C Sharqia 20.00 ± 0.50 a 83.33 ± 0.45 a 10.00 ± 0.70 a 33.30 ± 0.90 a
Qena 14.40 ± 0.75 b 80.00 ± 1.29 b 10.00 ± 0.52 a 24.60 ± 0.74 b
T value 6.230** 2.445* 0.221NS 7.477**
25 °C Sharqia 11.90 ± 0.28 a 66.67 ± 0.76 a 7.02 ± 0.14 a 20.00 ± 0.53 a
Qena 8.20 ± 0.29 b 48.60 ± 0.66 b 5.00 ± 0.46 b 14.33 ± 0.21 b
T value 9.081** 18.006** 4.185** 9.865**
35 °C Sharqia 8.00 ± 0.36 a 52.60 ± 0.46 a 5.20 ± 0.26 a 14.08 ± 0.22 a
Qena 5.60 ± 0.07 b 32.19 ± 0.42 b 3.30 ± 0.12 b 10.99 ± 0.20 b
T value 6.532** 33.029** 6.635** 10.388**
45 °C Sharqia 3.30 ± 0.10 a 16.70 ± 0.24 a 2.20 ± 0.05 a 5.56 ± 0.12 a
Qena 2.90 ± 0.13 b 14.20 ± 0.38 b 1.90 ± 0.03 b 5.26 ± 0.10 a
T value 2.440* 5.563** 5.468** 1.925NS
  1. In a vertical column, means with the same letter(s) are not significantly different (P > 5%). **Denotes highly significant,*denotes significant, NS denotes insignificant, (df = 8)