Abstract
The seed protein profiles of 11 Amaranthus taxa (Amaranthaceae) from Spain were studied. These profiles were evaluated as a chemical character to clarify the taxonomic complexity in the genus. Tricine-sodium dodecylsulphate-polyacrylamide gel electrophoresis (SDS-PAGE) profiles of the Amaranthus seed proteins studied showed a range of peptides varying from 64 to 12 kDa, with a larger number of protein bands observed between 25.1 and 12 kDa. For the taxonomic study, 14 bands, some of them subdivided into several isoforms, were considered. The similarity analysis based on the SDS-PAGE profile is a useful character for the discrimination of species in Amaranthus, except for A. cruentus and A. hypochondriacus, for which a hybrid population was found. © 2007 The Linnean Society of London, Botanical Journal of the Linnean Society, 2007, 155, 57‐63. ADDITIONAL KEYWORDS: Amaranthaceae ‐ electrophoresis ‐ taxonomy.
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