Toxicity of the essential oil of basil cultivars and hybrids and its repellent effect on stored grain pests

Authors

  • Andréa Santos da Costa Universidade Federal de Sergipe
  • Maria Fátima de Arrigoni-BlanK Universidade Federal de Sergipe
  • Leandro Bacci Universidade Federal de Sergipe
  • Arie Fitzgerald Blank Universidade Federal de Sergipe
  • Péricles Barreto Alves Universidade Federal de Sergipe
  • Magna Galvão Peixoto Universidade Federal de Sergipe
  • Ane Caroline Celestino Santos Universidade Federal de Sergipe

DOI:

https://doi.org/10.14393/BJ-v36n2a2020-42266

Keywords:

Ocimum basilicum, botanical insecticides, monoterpenes, cowpea seed beetle, maize weevil.

Abstract

Essential oils have emerged as an alternative to synthetic insecticides in the control of stored grain pests. The toxicity and repellency of the essential oils of four basil cultivars and three basil hybrids and the monoterpenes linalool, citral, and (E)-methyl cinnamate were evaluated in the stored grain pests Callosobruchus maculatus and Sitophillus zeamais. The essential oils of the cultivar Genovese and the hybrid 'Genovese' x 'Maria Bonita' were more toxic to C. maculatus. Conversely, the essential oils of the cultivar Sweet Dani and the hybrid 'Cinnamom' x 'Maria Bonita' were more toxic to S. zeamais. Among the monoterpenes, (E)-methyl cinnamate was the most toxic to both pests, taking 0.14 and 0.34 µL.mL-1 to kill 50% of the C. maculatus and S. zeamais populations, respectively. All essential oils from cultivars, hybrids, and monoterpenes were repellent to S. zeamais, except for (E)-methyl cinnamate. For C. maculatus, this effect was lower, being citral the most repellent compound. Results demonstrate the insecticidal potential of the essential oil of O. basilicum and its monoterpenes in the control of stored grain pests.

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Published

2020-02-11

How to Cite

COSTA, A.S. da, ARRIGONI-BLANK, M.F. de, BACCI, L., BLANK, A.F., ALVES, P.B., PEIXOTO, M.G. and SANTOS, A.C.C., 2020. Toxicity of the essential oil of basil cultivars and hybrids and its repellent effect on stored grain pests. Bioscience Journal [online], vol. 36, no. 2, pp. 341–352. [Accessed23 May 2022]. DOI 10.14393/BJ-v36n2a2020-42266. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/42266.

Issue

Section

Agricultural Sciences