Genetic Diversity and Population Structure of Sardinian Myrtle (Myrtus communis L.) Selections as Obtained by AFLP Markers
Articolo
Data di Pubblicazione:
2014
Citazione:
Genetic Diversity and Population Structure of Sardinian Myrtle (Myrtus communis L.) Selections as Obtained by AFLP Markers / Melito, Sara; Fadda, Angela; Rapposelli, Emma; Mulas, Maurizio. - In: HORTSCIENCE. - ISSN 0018-5345. - 49:5(2014), pp. 531-537. [10.21273/HORTSCI.49.5.531]
Abstract:
Myrtle is an aromatic plant typical of the Mediterranean maquis. It is widely
exploited in pharmaceutical, cosmetic, and food industries, whereas in Italy, it is mainly
used for the production of the typical liqueur. Amplified fragment length polymorphism
(AFLP) markers were used to evaluate the genetic variability of some Sardinian Myrtus
communis L. candidate cultivars. The AFLP selective amplification produced 138
reproducible AFLP fragments, 96% of which were polymorphic. STRUCTURE analysis
divided the myrtle accessions into two main genetic groups (K = 2). The two clusters
showed different numbers of individuals. Most of the individuals belonged to Cluster B,
whereas only eight genotypes were attributed toCluster A. Unweighted pair groupmethod
with Arithmetic Mean (UPGMA) dendrogram segregated all the myrtle cultivars into five
main groups, displaying a partial congruence with the division observed by STRUCTURE
analysis. The analysis of the genetic diversity distribution in a candidate cultivar selection
displayed a geographical gradient of myrtle from north to south, which reflects the
Sardinian shape, and fromwest to east, which reflects the Sardinianmountain distribution.
exploited in pharmaceutical, cosmetic, and food industries, whereas in Italy, it is mainly
used for the production of the typical liqueur. Amplified fragment length polymorphism
(AFLP) markers were used to evaluate the genetic variability of some Sardinian Myrtus
communis L. candidate cultivars. The AFLP selective amplification produced 138
reproducible AFLP fragments, 96% of which were polymorphic. STRUCTURE analysis
divided the myrtle accessions into two main genetic groups (K = 2). The two clusters
showed different numbers of individuals. Most of the individuals belonged to Cluster B,
whereas only eight genotypes were attributed toCluster A. Unweighted pair groupmethod
with Arithmetic Mean (UPGMA) dendrogram segregated all the myrtle cultivars into five
main groups, displaying a partial congruence with the division observed by STRUCTURE
analysis. The analysis of the genetic diversity distribution in a candidate cultivar selection
displayed a geographical gradient of myrtle from north to south, which reflects the
Sardinian shape, and fromwest to east, which reflects the Sardinianmountain distribution.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
cultivar, domestication, germplasm, molecular markers
Elenco autori:
Melito, Sara; Fadda, Angela; Rapposelli, Emma; Mulas, Maurizio
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