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Table 4 Effect of different doses of gamma irradiation on survival (%), dry biomass (g L− 1), antifeedant activity (%), and cumulative mortality (%) of the 3rd instar Spodoptera littoralis larvae feeding on castor leaves treated with methylene chloride extract of L. theobromae AUMC14508

From: Bioprospecting endophytic fungi for antifeedants and larvicides and their enhancement by gamma irradiation

Gamma irradiation dose

(Gy)

Survival

(%)

Dry biomass

(g L− 1)

Antifeedant activity

(%)

Cumulative mortality (%)

0.00 (C)

100 ± 0.00a

11.61 ± 0.52a

52.63 ± 3.21d

63.51 ± 2.41d

250

81.82 ± 2.71b

10.21 ± 0.41a

58.67 ± 3.41c

69.43 ± 3.22c

500

72.43 ± 3.52c

6.02 ± 0.89b

64.18 ± 2.76b

76.11 ± 2.51b

1000

45.51 ± 1.90d

4.65 ± 0.22b

71.43 ± 1.57a

79.24 ± 4.08a

2000

6.91 ± 1.88e

1.33 ± 0.86c

21.56 ± 2.33e

38.53 ± 2.55e

4000

0.00 ± 0.00f

0.00 ± 0.00d

0.00 ± 0.00f

0.00 ± 0.00f

  1. PD broth was used for cultivation. Static fungal cultures were incubated for 7 days at 30℃. Calculated mean is for five replicate measurements from two independent experiments ± SD, a−f means with different superscripts in the same column are considered statistically different (LSD test, P ≤ 0.05)