Produção Nacional
Control of Fusarium verticillioides using Palmarosa Essential Oil (Cymbopogon martinii)
2019; Excellent Publishers; Volume: 8; Issue: 05 Linguagem: Inglês
10.20546/ijcmas.2019.805.057
ISSN2319-7706
AutoresKevison Rômulo da Silva França, Alda Leaby dos Santos Xavier, Flávia Mota de Figuerêdo Alves, Tiago Silva Lima, Ionaly Gomes de Araújo, Lídia Pinheiro da Nóbrega, Antônio Hugo Costa Nascimento, Antônio Francisco de Mendonça Júnior, Ana Paula Medeiros dos Santos Rodrigues, Antônio Fernandes de Almeida, Tiago Augusto Lima Cardoso,
Tópico(s)Mycotoxins in Agriculture and Food
ResumoThis study aimed to evaluate the fungi toxic effect of palmarosa essential oil (Cymbopogon martinii) on mycelial growth of Fusarium verticillioides in vitro and treatment of corn seeds. For the in vitro experiment the essential oil was added to the culture medium and poured into Petri dishes, using seven different oil concentrations (0.0, 0.0125, 0.025, 0.05, 0.1 and 0.2%), 0.0% was the negative control, and we used Thiram as a positive control. Discs of culture medium with fungal mycelium were inoculated into the center of the plates and incubated for seven days at 27 ± 2°C. Growth was evaluated and the percentage of mycelial growth inhibition and mycelial growth rate index were calculated. For corn seed experiment, seven different oil concentrations (0.0, 0.1, 0.2, 1.0, 3.0, 5.0, and 6.0%) were used, and 0.0% was the negative control, and Thiram the positive control. The artificial inoculation was carried out in fungi colonies and the seed sanity test performed. The percentage of seeds infected by the fungus was evaluated after seven days. Under in vitro conditions, palmarosa oil reduced the mycelial growth of F. verticillioides at all concentrations tested. The highest dose, 0.2%, totally inhibited fungus growth. In seed treatment, the oil significantly reduced the percentage of infected seeds above 3.0% of concentration.
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