Trends in floral scent chemistry in pollination syndromes: floral scent composition in hummingbird-pollinated taxa

Autor:	JETTE T. KNUDSEN, LARS TOLLSTEN, INGA GROTH, GUNNAR BERGSTRÖM, ROBERT A. RAGUSO
Rok vydání:	2004
Předmět:	Ornithophily Taxon Pollination Odor Pollinator Botany Nectar Flor Plant Science Biology Adaptation Ecology Evolution Behavior and Systematics
Zdroj:	Botanical Journal of the Linnean Society. 146:191-199
ISSN:	1095-8339 0024-4074
Popis:	We studied an assemblage of 17 species of bird-pollinated Ecuadorian plants (from 14 angiosperm families), including taxa pollinated by short-billed (trochiline) and sickle-billed (hermit) hummingbirds. Hummingbirds are widely supposed to ignore fragrance while visiting flowers. We collected floral headspace odours in order to test the general prediction that specialist hummingbird-pollinated flowers are scentless. In nine out of 17 of these species we failed to detect any odours using gas chromatography-mass spectrometry (GC-MS), whereas the remaining eight species produced trace levels of volatile compounds. Most of these odour compounds were of terpenoid or lipoxygenase derivation and are commonly emitted by vegetative as well as floral plant tissues. Further studies will be required to determine whether these weak odours attract alternative pollinators, repel enemies or represent vestiges of a scented ancestry.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::524326965d7d51570a450b31a2681eaa https://doi.org/10.1111/j.1095-8339.2004.00329.x Zobrazit plný text záznamu Plný text ve formátu PDF