Proceedings of the XLVII Italian
Society of Agricultural Genetics - SIGA Annual Congress
Verona,
Italy - 24/27 September, 2003
ISBN 88-900622-4-X
Poster
Abstract - 2.14
AFLP MARKERS TO STUDY THE GENETIC RELATIONSHIPS
AMONG THE MAIN ITALIAN TABLE CULTIVARS (OLEA EUROPAEA L.)
P. LABOMBARDA,
G. FONTANAZZA
Istituto per i
Sistemi Agricoli e Forestali del Mediterraneo - Sezione di Olivicoltura di
Perugia - CNR, via Madonna Alta 128, 06128 Perugia
Olea europaea
L., AFLP, table cultivars, genetic diversity
AFLP analysis was
performed on 19 table and double purpose cultivars: 16 Italian and 3 foreign
cultivars (“Gordal”, Picholine” and “Picholine
Marocaine”) which showed morphological affinities with some of the
Italian cultivars analysed.
The plant
material analysed comes from the Institute germplasm collection where they are
in the same environmental conditions.
A total of 185
polymorphic fragments were identified and used to calculate pairwise genetic
distances and to subsequently construct a dendrogram which clearly shows the
polymorphism characteristic of the cultivars studied. There are not homonyms
and synonyms. Particularly interesting is the case of “Giarraffa”,
“Gioconda” and “Gordal”. “Giarraffa” is a
Sicilian cultivar of ancient origin wide spread in the island and with an
economic importance. In Spain according to a diffusion order
“Gordal” is the second after the cultivar “Manzanilla”
. “Gordal”, as reported by some authors (Mulè et al. 2001),
seems to be introduced in Sicily as “Gioconda”. On the contrary our
molecular inquiry shows that “Gioconda” and “Gordal”
are genetically distinct and that the similarity degree (SC=0.98) between
“Giarraffa” and “Gioconda” is higher than the one
observed between “Gordal” and “Gioconda”.