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AOBPreview published online on December 13, 2004
Annals of Botany, doi:10.1093/aob/mci055
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Annals of Botany, © Annals of Botany Company 2004; all rights reserved
Received July 16, 2004
Revised September 10, 2004
Accepted October 28, 2004

Article

Allozymic Differentiation of the Antirrhinum majus and A. siculum Species Groups

I. MATEU-ANDRÉS 1* and LORENA DE PACO 1

1 Instituto Cavanilles de Biodiversidad y Biología Evolutiva, C/Dr. Moliner 50, E46100 Burjassot, Valencia, Spain

* To whom correspondence should be addressed.
I. MATEU-ANDRÉS, E-mail: Isabel.Mateu{at}uv.es


  Abstract

• Background and Aims Fifty-two populations were sampled in order to establish the taxonomic delimitation and relationships of eight taxa belonging to the A. majus L. and A. siculum Miller groups.

• Methods Data on 13 allozyme loci were recorded after extraction of fresh leaves and electrophoresis on horizontal 10 % starch gels.

• Key Results Genetic distances between conspecific populations are lower than for other species of the genus.

• Conclusions These results support the recognition of A. majus, A. tortuosum, A. linkianum, A. cirrigherum, A. litigiosum and A. barrelieri at specific rank. The genetic distances, together with the lack of morphological differences and the sympatric distribution ranges, support the inclusion of A. australe into A. tortuosum, A. dielsianum into A. siculum, and A. latifolium subsp. intermedium as a synonym of A. latifolium. The results support separation of the taxa studied into two groups, coinciding with series Sicula Rothm. and Majora, but disagreeing with the arrangement of species into them. According to our results, Sicula consist of A. siculum and Majora consists of A. latifolium, A. majus, A. tortuosum, A. linkianum, A. cirrigherum, A. litigiosum and A. barrelieri.

Keywords: Antirrhinum, A. majus, A. siculum, A. australe, snapdragons, allozymes, systematics, taxonomy.
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