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Posters
INTEGRATING MOLECULAR AND TRADITIONAL TAXONOMY IN
RUMEX BUCEPHALOPHORUS L.
140
María TALAVERA, María Jesús ARIZA, Pedro L. ORTIZ, Montserrat ARISTA
Universidad de Sevilla, Dpto. Biología Vegetal y Ecología, Apto. 1095, 41080, Sevilla, España
mtalavera@us.es
Rumex bucephalophorus is a very polymorphic species, for which Press (1988) distinguished
four subspecies (bucephalophorus, canariensis, hispanicus and gallicus) that vary in diaspore
peduncle and valve morphology. The objective of this work is to integrate molecular and
traditional taxonomy. On one hand, we have taken measures of both longitude and width of
pedicels and fruit valves of one population of each subspecies, selecting exclusively
populations that strictly correspond to subspecies description. On the other hand, we have
carried out genetic analysis by means of molecular techniques (AFLP) in a larger number of
populations. Preliminary results using the two techniques indicate that, in general, traditional
taxonomy coincides with molecular data. In both cases R. bucephalophorus subsp.
bucephalophorus and subsp. canariensis appear well defined while the limits among the other
two subspecies are still unclear (hispanicus and gallicus). However, in some subspecies,
wider sampling showed a higher variability in morphological traits than it has been previously
described. For example, in R. bucephalophorus subsp. canariensis, some populations have the
typical diaspore of the subspecies and other populations have not; however molecular data
show these populations in the same cluster.
Keywords: Rumex, morphological traits, AFLP.
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