Indicators of plant-insect relationship by analysis of floral scent volatiles from three Plumeria species
DOI:
https://doi.org/10.53660/CONJ-2025-2S01Palavras-chave:
HS-SPME/GC-MS, Plumeria, Apocynaceae, Pseudosphinx tetrioResumo
As espécies do gênero Plumeria são conhecidas pela fragrância forte e agradável; no entanto, sua composição volátil e variação de aroma são amplamente desconhecidas. Os perfis diurno e noturno dos aromas florais de três espécies de Plumeria foram avaliados com base na composição química (por HS-SPME / GC-MS). Vinte e quatro compostos foram identificados. Linalol foi o composto majoritário em P. alba (86,5% dia e 71,0% noite), menor em P. rubra (8,3% dia e 13,0% noite) e ausente em P. obtusa. O composto majoritário encontrado em P. rubra foi o benzoato de metila (55,9% dia e 62,3% noite) e em P. obtusa foi salicilato de metila (30,2% dia e 20,6% noite). Todas as espécies revelaram variações diurnas e noturnas na composição de seus metabólitos voláteis, embora a diferença tenha sido mais proeminente em Plumeria alba. Diferenças nos voláteis das espécies Plumeria podem ser a causa da infestação preferencial de plantas de P. alba pela mariposa tetrio sphinx.
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