Studying Lords and Ladies, Arum maculatum (L.)

Autor:	Derek H. T. Jones
Rok vydání:	1977
Předmět:	Bract Secondary education biology Arum maculatum fungi Genus Psychoda biology.organism_classification Education chemistry.chemical_compound chemistry Botany Spadix (botany) General Agricultural and Biological Sciences Gibberellic acid
Zdroj:	Journal of Biological Education. 11:253-260
ISSN:	2157-6009 0021-9266
DOI:	10.1080/00219266.1977.9654156
Popis:	Historical uses of Arum maculatum (L.) are summarized. Field and laboratory investigations show plants with purple and pale spadices are equally attractive to flies of the genus Psychoda; and these are attracted to the scent in the absence of visual stimuli. Over 75% of the flies which enter spikes escape. Temperature changes during spadix maturation, and spathe uncurling in the presence of flower tissue, indol-3-yl acetic acid, and gibberellic acid are investigated in the laboratory. Dilute solutions of both phytohormones cause significant spathe uncurling. Further investigations, suitable for project work in schools and colleges, are suggested.
Databáze:	OpenAIRE
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