Molecular and morphological differentiation among varieties of A. caven by means of discriminant analysis

POMETTI, C.; VILARDI, J.; CIALDELLA, A. M.; SAIDMAN, B.

Bariloche

Congreso; VI Southern Connection; 2010

sin datos

Six varieties of  A. caven have been described based on morphologic traits of the fruit: caven, macrocarpa, dehiscens, sphaerocarpa, stenocarpa and  macrocarpa. In this study, we conducted a parallel analysis of genetic and phenotypic diversity among and within the six varieties of A. caven with the objective of determining if the varieties described on morphological grounds represent genetically differentiated entities. The distinction of the six varieties was examined using morphological and RAPD markers. We studied 15 Argentinean populations. The data obtained by both methodologies was analysed by means of discriminant analysis (DA). A total of 47 RAPD bands were generated with the 5 chosen primers across 224 individuals. DA indicated that both, populations and varieties can be differentiated on the basis of RAPD band patterns (P< 10-4). The results of the DA from morphological data were according with those obtained with RAPD, and the discrimination of varieties from morphological traits was also highly significant (P< 10-4). The results of this work show a consistency between the prior classification of individuals in varieties and the posterior classification based on molecular markers and our results support the taxonomic differentiation of the six varieties studied.