Variação de terpenos e seu papel na defesa contra herbivoros em Hyptis suaveolens (L.) Poit (Labiatae)

AUTOR(ES)
DATA DE PUBLICAÇÃO

1987

RESUMO

The terpenes of Hyptis suavelens (L.) Poit. w e r e analised qualitatively and quantitatively to evaluate their role in the defense against herbivores, and to determine the degree of intra and interpopulation variation in chemical composition. Populations were studied at the Horto Florestal de Sumaré, Campus of Unicamp-Campinas, and Fazenda Santa Genebra-Distrito de Barão Geraldo, Campinas, all in the state of São Paulo, Brazil. At each site, a population exposed to full sun light and another in the shade were studied. Strong intrapopulational variation in terpene composition was observed, but interpopulational differences were small, though when compared with other geographic differences were small, though when compared with other geographic regions, these populations had a composition that was quite distinct. Its was observed that populations accompanied during their development were more apparent to herbivores in the period preceeding flowering. Heavy herbivore damage was not detected during this period, although field observations suggested higher herbivore densities. The results suggest that the variation in chemical composition probably has an effect on the development of generalist herbivores. On the other hand, Pyrauta insignatalis Gunée (Lep ?Pyralidae ? Pyraustinae) is probably well adapted to the plant and appears to be resistant to the terpenes ...Note: The complete abstract is available with the full electronic digital thesis or dissertations

ASSUNTO(S)

terpenios herbivoros - ecologia vegetal ecologia vegetal

ACESSO AO ARTIGO

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