Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/32068
Title: Probing behavior of Dysmicoccus brevipes mealybug in pineapple plants
Other Titles: Conduta alimentar da cochonilha Dysmicoccus brevipes em abacaxizeiro
Keywords: Ananas comosus
Pineapple mealybug
Phenols
Cochonilha-do-abacaxi
Fenóis
Issue Date: 2016
Publisher: Universidade Federal de Goiás, Escola de Agronomia e Engenharia de Alimentos
Citation: SANTA-CECÍLIA, L. V. C.; PRADO, E.; SOUZA, B. Probing behavior of Dysmicoccus brevipes mealybug in pineapple plants. Pesquisa Agropecuária Tropical, Goiania, v. 46, n. 4, p. 458-463, Oct./Dec. 2016.
Abstract: Differences in susceptibility to viruses in plants may be partially explained by the insect vector probing behavior and by the presence of phenolic compounds, which are often associated with defense strategies. This study aimed at detecting barriers that may difficult the probing activity of the Dysmicoccus brevipes (Pseudococcidae) pineapple mealybug, a vector of the pineapple mealybug wilt-associated virus, as well as evaluating the phenolic content of plants, in order to verify any possible relationship with the probing behavior, by using the electrical penetration graphs (EPG) technique. Seedlings of 'Smooth Cayenne' and 'Pérola' pineapple cultivars were used in the experiments. Only 28 % and 21 % of the mealybugs reached the phloem of the 'Smooth Cayenne' and 'Pérola' cultivars, respectively, over 16 h of recording, with an average of 9 h to reach the phloem vessels. The xylem phase was extended in both cultivars and represented approximately 31 % ('Smooth Cayenne') and 44 % ('Pérola') of the recording time. The phenolic contents of both cultivars were similar.
URI: http://repositorio.ufla.br/jspui/handle/1/32068
Appears in Collections:DEN - Artigos publicados em periódicos

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