Characterization of the varieties of Acacia Caven (Mimosoideae) by means of molecular and morphological markers

CAROLINA L. POMETTI; JUAN C. VILARDI; ANA M. CIALDELLA; BEATRIZ O. SAIDMAN

V Conferencia Internacional de Leguminosas (VILC)

Ediciones CICCUS

Lugar: Buenos Aires; Año: 2015; p. 187 - 199

The genus Acacia (Leguminosae, Mimosoideae) includes more than 1450 species of pantropical distribution. One of thespecies widely distributed in South America is A. caven, present in six countries. Six varieties have been described forthis species based on fruit morphology: caven, macrocarpa, dehiscens, sphaerocarpa, stenocarpa and microcarpa. Theaim of this study was to estimate if morphological differences observed in Argentinean natural populations of Acacia cavenjustified the classification in varieties. For this objective, RAPD, AFLP and morphometric techniques were used in 15natural populations of this species. Studies of analysis of variance of molecular and morphological markers showed thatmost part of the genetic variability was within populations. Moreover, discriminant analysis for the three markers showedsome overlapping individuals, but succeeded in differentiating the six varieties of this species. Consistency betweenprevious taxonomic classification of individuals in varieties and post classification base don molecular markers (RAPDand AFLP), is according with Aronson (1992) hypothesis since the results of this work showed that the six varieties of A.caven seem to be genetically differentiated.