Chemotaxonomic classification of some Allium wild species on the basis of their volatile sulphur compounds

摘要

A total of 43 Allium species or types were investigated via SPME-HS-GC-analysis (Solid Phase Micro Extraction-Head Space-Gas Chromatography). The resulting aroma profiles, including 24 volatile sulphur compounds, were statistically evaluated by cluster analysis using the WARD-method. The three known main groups (methiin-, garlic- and onion-type) can be discriminated in the presentation of the euklidic distances. Moreover, these three main groups can clearly be divided into seven chemotypes. This fine-structure leads to a better selection of wild species for breeding experiments, aiming a purposeful improvement in aroma, taste and also pharmacological properties of interspecific Allium hydrids.