Research Article
Contact Toxicity and Repellency of the Essential Oil from Bupleurum bicaule Helm against Two Stored Product Insects
Table 2
Contact toxicity of Bupleurum bicaule essential oil and its constituents against Lasioderma serricorne (LS) and Liposcelis bostrychophila (LB) adults.
| Insects | Treatments | Concentrations (%) | LD50 (µg/adult)/(µg/cm2) | 95% FL (µg/adult)/(µg/cm2) | Slope ± SE | Chi square () |
| LS | Essential oil | 1.91–10.00 | 11.91 | 7.04–15.66 | 2.01 ± 0.39 | 17.50 | β-Bisabolene | 2.97–15.00 | 24.99 | 21.68–29.14 | 3.86 ± 0.56 | 3.61 | 1,4-Dimethoxy-2-tert-butylbenzene | 1.97–10.00 | 23.56 | 20.03–27.24 | 3.18 ± 0.55 | 2.90 | Bornyl acetate | 0.90–4.40 | 9.42 | 8.14–10.87 | 0.98 ± 0.17 | 7.53 | (2E,4E)-2,4-Nonadienal | 0.27–1.30 | 2.31 | 2.03–2.61 | 4.00 ± 0.62 | 9.44 | Pyrethrins | - - | 0.24 | 0.22–0.30 | 3.34 ± 0.32 | 13.11 |
| LB | Essential oil | 0–5.00 | - - | - - | - - | - - | β-Bisabolene | 0–50.00 | - - | - - | - - | - - | 1,4-Dimethoxy-2-tert-butylbenzene | 0.12–1.00 | 62.34 | 55.97–69.66 | 6.42 ± 0.87 | 3.93 | Bornyl acetate | 0.20–0.40 | 36.67 | 34.67–38.55 | 16.73 ± 2.28 | 7.04 | (2E,4E)-2,4-Nonadienal | 0.20–0.40 | 32.23 | 30.59–33.97 | 17.08 ± 2.31 | 9.66 | Pyrethrins | - - | 18.72 | 17.60–19.92 | 2.98 ± 0.40 | 10.56 |
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Data from Yang et al. [ 26]. |