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20 November 2024 Ability of Nicotiana glauca Extract to Repel the Pepper Weevil, Anthonomus eugenii
Heidy Karina Mendez-Molina, Cipriano García-Gutiérrez, Mónica Yazmín Flores-Villegas, Maribel Valdez-Morales, Héctor Abelardo González-Ocampo, Gabriela Lizbeth Flores-Zamora
Author Affiliations +
Abstract

En Sinaloa el chile Capsicum annum (Linneo) es afectado por el picudo del chile Anthonomus eugenii (Cano), plaga que daña a los frutos, por lo que es necesario su control usando insecticidas. Se realizó un bioensayo para evaluar el índice de repelencia de extractos de Nicotiana glauca (Graham) obtenidos mediante Soxhlet y maceración contra adultos de A. eugenii. Para determinar el efecto repelente, los extractos se aplicaron sobre pedazos de chile a 5 y 10 mg/ml. Se realizó un tamizaje fitoquímico cualitativo a los extractos para detectar el tipo de metabolitos tóxicos. El extracto de N. glauca a 10 mg/ml mostró un índice de repelencia muy alto 0.07 (p =0.05) contra el picudo del chile, por lo que puede ser útil para usarlo en barreras físicas fuera del cultivo para evitar a esta plaga.

Pepper Capsicum annum (Linnaeus) crops in Sinaloa, Mexico, are affected by the pepper weevil Anthonomus eugenii (Cano), a pest that damages the fruits. Thus, insecticides are necessary for its control. A bioassay was carried out to evaluate the repellency index of extracts of Nicotiana glauca (Graham) obtained by Soxhlet and maceration against the adults of A. eugenii. The repellent effect was determined by applying 5 and 10 mg/ml of the extracts to pieces of pepper. The extract was qualitatively screened for its phytochemicals to determine what type of toxic metabolites it produces. The N. glauca extract at 10 mg/ml had a very high repellency index of 0.07 (p=0.05) against the pepper weevil. Thus, it can be used in a physical barriers outside the crop to avoid this pest.

Heidy Karina Mendez-Molina, Cipriano García-Gutiérrez, Mónica Yazmín Flores-Villegas, Maribel Valdez-Morales, Héctor Abelardo González-Ocampo, and Gabriela Lizbeth Flores-Zamora "Ability of Nicotiana glauca Extract to Repel the Pepper Weevil, Anthonomus eugenii," Southwestern Entomologist 49(4), 1-6, (20 November 2024). https://doi.org/10.3958/059.049.0412
Published: 20 November 2024
KEYWORDS
alcaloides
alkaloids
extracción
extraction
metabolitos secundarios
secondary metabolites
Soxhlet
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