Table 3 Probit analysis of spinasterol and 22,23-dihydrospinasterol against Myzus persicae.

From: Antioxidant, antifungal, and aphicidal activity of the triterpenoids spinasterol and 22,23-dihydrospinasterol from leaves of Citrullus colocynthis L.

Bioassay

Time (h)

LC50 (µg mL−1)

95% F.L

Slope ± SE

χ2

Lower

Upper

Greenhouse

24

173.8

59.77

6796

1.01 ± 0.31

1.04

48

42.46

25.11

107.2

1.38 ± 0.29

1.99

72

32.71

19.40

73.57

1.47 ± 0.38

2.18

Residual

24

180.9

65.58

9889

1.17 ± 0.38

0.56

48

54.86

31.38

166.2

1.42 ± 0.32

1.28

72

42.46

25.11

107.1

1.38 ± 0.29

1.99

  1. F.L. Fiducial limits, χ2 chi-squared, LC50 lethal concentration.
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