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| Format: | Artículo científico |
| Sprache: | en |
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Academia Brasileira de Ciências
2016
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=32748476016 |
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Inhaltsangabe:
- Feeding preference of Plutella xylostella for leaves treated with plant extracts IRYS F.S. COUTO MATEUS L. FUCHS FABRÍCIO F. PEREIRA MUNIR MAUAD SILVANA P.Q. SCALON DAIANE M. DRESCH ROSILDA M. MUSSURY Multidisciplinaria (Ciencias Naturales y Exactas) Annona coriacea Feeding deterrence insecticidal plant Duguetia furfuracea Trichilia silvatica Plutella xylostella L. is one of the main agents to cause damages to plants of Brassica genus, provoking negative impacts in cultures. The use of botanical extracts in plants protection has been related in literature, however, their use in the species analyzed in this study is not yet reported. We assessed the effect of aqueous and methanolic extracts of the species: Schinus terebinthifolius Raddi (Pink Pepper), Annona coriacea Mart. (Araticum), Duguetia furfuracea (A. St.-Hil.) Benth. & Hook. (Pindaúva do campo) and Trichilia silvatica C. DC. (Catiguá-branco), occuring in the state of Mato Grosso do Sul and whose feeding preference of P. xylostella larvae of 3rd instar. We intend to answer the following questions: (1) Are the plant species analyzed fagodeterrentes? (2) what type of extract produces the least food preferrence? To answer these questions, we treated cabbage disks with aqueous extracts stored in a refrigerator in periods of 0, 7, 14 and 21 days and the methanolic extracts were treated at concentrations of 0.5 mg/mL, 1.0 mg/ mL, 2.0mg/mL. The aqueous and methanolic extracts of T. silvatica presented the lowest values of feeding preference, 0.113 and 0.06, respectively, compared to other extracts. 2016 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32748476016 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.88