COMPOSTOS SECUNDÁRIOS DE CAFÉ ASSOCIADOS A COCCUS VIRIDIS
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Data
2009
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Resumo
A identificação de compostos químicos presentes no cafeeiro pode representar uma importante ferramenta no controle de insetos-praga como a cochonilha verde Coccus viridis (Hemiptera: Coccidae). Dessa forma, objetivou-se neste trabalho identificar e quantificar compostos secundários produzidos por C. arabica L. como resposta induzida ao ataque de C. viridis (Hemiptera: Coccidae) e o efeito destes compostos nesta praga. Esta pesquisa foi realizada em casa de vegetação pertencente a Universidade Federal de Viçosa, nos anos de 2005 e 2006. O delineamento experimental foi inteiramente casualizado com dois tratamentos e quatro repetições. Cada tratamento foi composto por duas plantas de C. arabica (planta 1= infestada e planta 2= não infestada). Quando as plantas atingiram 11 meses de idade elas foram retiradas dos vasos e separadas em raízes, caule e folhas. As folhas foram lavadas com água destilada para eliminação das cochonilhas e dos resíduos existentes. Para identificar e quantificar as substâncias utilizou-se cromatógrafo líquido de alto desempenho (HPLC). Foram detectadas diferenças significativas nos teores dos compostos secundários em função do ataque de C. viridis.
The identification of chemical compounds present in coffee may represent an important tool in controlling insect pests such as green scale Coccus viridis (Hemiptera: Coccidae). Thus, this study aimed to identify and quantify secondary compounds produced by C. arabica L. induced in response to the attack of C. viridis (Hemiptera: Coccidae) and the effect of these compounds in this pest. This research was conducted in a greenhouse belonging to the University Federal of Viçosa, in the years 2005 and 2006. The experimental design was completely randomized to two treatments and four replications. Each treatment was composed of two plants of C. arabica (1 = plants infested and non infested plants = 2). When the plants reached 11 months of age they were removed from pots and separated into roots, stems and leaves. The leaves were washed with distilled water for removal of existing scales and waste. To identify and quantify the substances used were high performance liquid chromatograph (HPLC). Were significant differences in levels of secondary compounds in relation to the attack of C. viridis.
The identification of chemical compounds present in coffee may represent an important tool in controlling insect pests such as green scale Coccus viridis (Hemiptera: Coccidae). Thus, this study aimed to identify and quantify secondary compounds produced by C. arabica L. induced in response to the attack of C. viridis (Hemiptera: Coccidae) and the effect of these compounds in this pest. This research was conducted in a greenhouse belonging to the University Federal of Viçosa, in the years 2005 and 2006. The experimental design was completely randomized to two treatments and four replications. Each treatment was composed of two plants of C. arabica (1 = plants infested and non infested plants = 2). When the plants reached 11 months of age they were removed from pots and separated into roots, stems and leaves. The leaves were washed with distilled water for removal of existing scales and waste. To identify and quantify the substances used were high performance liquid chromatograph (HPLC). Were significant differences in levels of secondary compounds in relation to the attack of C. viridis.
Descrição
Trabalho apresentado no Simpósio de Pesquisa dos Cafés do Brasil (6. : 2009 : Vitória, ES). Anais Brasília, D.F: Embrapa - Café, 2011
Palavras-chave
Coccus viridis, Coffea arabica L, aleloquímicos, Coccus viridis, Coffea arabica L, alelochemical
Citação
Fernandes, Flávio Lemes; Benevenute, Jorgiane da Silva; Picanço, Marcelo Coutinho; Moreira, Suzana de Sá; Galdino, Tarcísio Visintin da Silva; Pereira, Renata Ramos. Compostos secundários de café associados a Coccus viridis. In: Simpósio de Pesquisa dos cafés do Brasil (6. : 2009 : Vitória, ES). Anais Brasília, D.F: Embrapa - Café, 2011 (1 CD-ROM), 4p.