ABSTRACT
Essential oils from the heartwood and leaves of specimens of Vanillosmopsis pohlii collected in two different localities were analyzed by GC-MS. The major constituent of both heartwood essential oils was the sesquiterpene alpha-bisabolol. Essential oil composition from leaves was quite different for two specimens and showed beta-pinene and E-caryophyllene as principal constituents. The essential oil of heartwood and the pure sesquiterpene alpha-bisabolol were tested against Bemisia argentifolii, the white fly fruit plague, and pronounced insecticidal effects were observed.
Subject(s)
Asteraceae/chemistry , Hemiptera , Insecticides/analysis , Oils, Volatile/chemistry , Animals , Gas Chromatography-Mass Spectrometry , Monocyclic Sesquiterpenes , Monoterpenes/analysis , Plant Leaves , Sesquiterpenes/analysisABSTRACT
A propagação assexuada do "Candeeiro" Vanillosmopsis arborea Baker, espécie produtora de óleo essencial rico em alfa-bisabolol, vem sendo testada com relativo sucesso em casa de vegetação localizada na Chapada do Araripe Crato, Ceará, sua área nativa. Por outro lado, o domínio dos tratos silviculturais ainda não foi atingido. O presente trabalho, teve como finalidade repovoar quatro áreas de clareiras na Chapada do Araripe, tendo em vista a preservação de uma espécie de reconhecido valor econômico e a observação do estabelecimento de 330 mudas produzidas por estaquia. As mudas mostraram-se resistentes, com crescimento médio entre 5,99-7,18 cm, lento, porém uniforme, estando o estabelecimento definitivo a mercê das condições climáticas da região.
Vanillosmopis arborea Baker is a native tree from Chapada do Araripe located in Crato city, state of Ceará, being a potencial source of essencial oil containing á-bisabolol. Its asexual propagation has been carried out in a green house nearby Crato. This work aimed at the feasibility of growth of V. arborea Baker samples in four experimental plots in Chapada do Araripe, through the transplantation of 330 plants to the field produced by cutting. Plant growing has been observed during four months and the results showed that plants growth is suitability to climate and soil conditions, whereby an average plant growth of 5.99 - 7.18 cm was obtained.
