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AOBPreview published online on September 10, 2003
Annals of Botany, doi:10.1093/aob/mcg184
© 2003 by Annals of Botany Company
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Submitted on July 25, 2002
Revised on May 20, 2003
Accepted on July 24, 2003

Allozymic Differentiation of the Antirrhinum graniticum and the Antirrhinum meonanthum Species Groups

I. MATEU-ANDRÉS1* and J. G. SEGARRA-MORAGUES2

Affiliation of the authors: 1 Instituto Cavanilles de Biodiversidad y Biología Evolutiva, C/Dr. Moliner 50-E46100-Burjassot, Valencia, Spain; 2 Departamento de Agricultura y Economía Agraria, Facultad de Veterinaria, Universidad de Zaragoza, C/Miguel Servet 177, E50013-Zaragoza, Spain

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

Forty populations from eight taxa belonging to six species of Antirrhinum were studied for electrophoretic differentiation at 14 allozyme loci. All the studied species show that marker alleles and genetic distances between conspecific populations are lower than for other species of the genus. Results permit the recognition of A. onubensis and A. boissieri at specific rank. The low level of genetic distance together with morphological characters and sympatric range, support the recognition of A. ambiguum as a new subspecies of A. graniticum, as A. graniticum ssp. ambiguum Mateu & Segarra stat. nov. The results of the study support separation of the studied taxa into two groups coinciding with subsections Streptosepalum and Antirrhinum, but disagreeing with the arrangement of species into them. According to the results of the study these groups consist of A. meonanthum and A. braun-blanquetii (Streptosepalum) and A. graniticum s.l., A. onubensis and A. boissieri (Antirrhinum). The status of A. meonanthum var. rothmaleri requires further clarification.
Key words: Snapdragons, Antirrhinum, allozymes, systematics.


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