Essential Oil Variation from Twenty Two Genotypes of Citrus in Brazil-Chemometric Approach and Repellency Against Diaphorina citri Kuwayama

Autor(es)

Andrade, Moacir dos Santos ^[1] ; Ribeiro, Leandro do Prado ^[2] ; Borgoni, Paulo Cesar ^[2] ; Fernandes da Silva, Maria Fatima das Gracas ^[1] ; Forim, Moacir Rossi ^[1] ; Fernandes, Joao Batista ^[1] ; Vieira, Paulo Cezar ^[1] ; Vendramin, Jose Djair ^[2] ; Machado, Marcos Antonio ^[3]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Quim, CP 676, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Sao Paulo, ESALQ, Dept Entomol & Acarol, Ave Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

^[3] Ctr APTA Citros Sylvio Moreira, Inst Agron, CP 04, BR-13490970 Cordeiropolis, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Molecules; v. 21, n. 6 JUN 2016.
• Citações Web of Science: 3

Resumo

The chemical composition of volatile oils from 22 genotypes of Citrus and related genera was poorly differentiated, but chemometric techniques have clarified the relationships between the 22 genotypes, and allowed us to understand their resistance to D. citri. The most convincing similarities include the synthesis of (Z)-beta-ocimene and (E)-caryophyllene for all 11 genotypes of group A. Genotypes of group B are not uniformly characterized by essential oil compounds. When stimulated with odor sources of 22 genotypes in a Y-tube olfactometer D. citri preferentially entered the arm containing the volatile oils of Murraya paniculata, confirming orange jasmine as its best host. C. reticulata x C. sinensis was the least preferred genotype, and is characterized by the presence of phytol, (Z)-beta-ocimene, and beta-elemene, which were not found in the most preferred genotype. We speculate that these three compounds may act as a repellent, making these oils less attractive to D. citri. (AU)

• Processo FAPESP: 12/25299-6 - Estudos integrados para o controle de formigas cortadeiras
• Beneficiário: João Batista Fernandes
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 08/57859-5 - Controle biorracional de insetos pragas
• Beneficiário: Maria Fátima das Graças Fernandes da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Temático