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Table 3 Growth inhibitory activity of polyketide metabolite against H. armigera and S. litura

From: Antifeedant, larvicidal and growth inhibitory bioactivities of novel polyketide metabolite isolated from Streptomyces sp. AP-123 against Helicoverpa armigera and Spodoptera litura

Concentration (ppm)

H. armigera

S. litura

N*

Larval duration (d)

Pupicidal (%)

N*

Pupal duration (d)

N*

Larval duration (d)

Pupicidal (%)

N*

Pupal duration (d)

Polyketide metabolite

125

42

10.09 ± 0.44b

20.99 ± 4.15b

33

11.45 ± 0.40b

43

10.02 ± 0.29a,b

18.51 ± 6.33b

35

10.28 ± 0.22a

250

33

10.91 ± 0.35b,c

32.58 ± 5.20b,c

24

12.35 ± 0.46b,c

34

10.44 ± 0.87b

25.06 ± 7.22b

25

11.53 ± 0.69b

500

24

12.55 ± 0.37c

42.55 ± 3.47c

14

13.50 ± 0.70c

21

11.96 ± 0.45c

47.13 ± 10.9c

11

13.86 ± 0.63c

1000

18

13.98 ± 0.51d

62.01 ± 11.7d

8

15.45 ± 1.03d

18

13.96 ± 0.92c

55.06 ± 9.12c

8

14.4 ± 0.54cd

Azadirachtin

125

26

14.09 ± 0.16e

70.45 ± 9.04d

8

17.95 ± 0.54e

23

14.56 ± 0.26d,e

47.40 ± 7.48c

12

14.10 ± 0.48c

250

17

15.8 ± 0.74f

100 ± 00e

  

15

15.95 ± 0.98e

76.08 ± 12.9d

4

15.24 ± 0.5d

500

0

         

1000

Control

48

9.08 ± 0.15a

0a

48

9.58a

48

 

8.95 ± 0.49a

48

11.12 ± 0.39a

  1. Mean ± SD within columns followed by the same letter do not differ significantly using Tukey’s test, P ≤ 0.05. N*: number.