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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945

Resumo

AQUINO, César Fernandes; SALES, Nilza de Lima Pereira; SOARES, Eriksen Patric Silva  e  MARTINS, Ernane Ronie. Chemical characterization and action of essential oils in the management of anthracnose on passion fruits. Rev. Bras. Frutic. [online]. 2012, vol.34, n.4, pp.1059-1067. ISSN 0100-2945.  https://doi.org/10.1590/S0100-29452012000400012.

The objective was to evaluate two methods of inoculation of Colletotrichum gloeosporioides on passion fruit, test the pathogenicity of different isolates, fungitoxic effect and the chemical composition of the essential oils from medicinal plants Lippia sidoides (Cham.), Cymbopogon citratus (D. C.) Stapf. and Ocimum gratissimum (L.), in the anthracnose control [Colletotrichum gloeosporioides (Penz.)] associated with maturity stage of yellow passion fruit. Three experiments were evaluated, where it was tested the pathogenicity of six fungi isolates in a randomized design with six replicates, other with the same design in 2x2 factorial design (conidial suspension and mycelial discs) and fruit (green and ripe), with six replicates. In treatment with fruits, we used a completely randomized in a factorial 5x3+1, five concentrations (0, 2, 4, 6 and 8 μL mL-1) and three medicinal plant species, and tebuconazole, with five replicates. The chemical composition of essential oils was determined by gas chromatography with mass spectrometry. All isolates were pathogenic. Ripe fruits had larger lesions when inoculated with conidial suspension. The oil of C. citratus provided the small diameter of the lesions on the fruit until the 6 μL mL-1 concentration. At the concentration of 8 μL mL-1 all oils inhibited the fungal growth. Thymol (30.24%), citral (77.74%) and eugenol (92.89%) were major components in L. sidoides, C. citratus and O. gratissimum, respectively.

Palavras-chave : Colletotrichum gloeosporioides; Passiflora edulis; postharvest.

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