Abstract
Volatiles from flowers of several lucerne ( Medicago sativa complex) genotypes, belonging to different taxonomic groups and characterised by various flower colours, were isolated by Tenax-trapping and analysed by GC and GC-mass spectrometry. Thirty-three compounds were identified, including aldehydes, alcohols, esters, ketones, terpenes and furanoids. Trans-2-hexenal was the most abundant volatile in all genotypes. Ranking of individual volatile compounds was similar in all genotypes but absolute values (μg g −1 for each compound varied widely from genotype to genotype, being largely associated with flower colour intensity. In terms of total volatile quantity, the following ranking of flower colours was observed: dark green & violet > bright or light yellow. © 1997 Elsevier Science Ltd. All rights reserved
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