Climate Variables of the Sites of Origin and Genotype Influence on Phenolic Compounds Accumulation in Cultivars of Myrtus communis L.

Myrtle (Myrtus communis L.) is an aromatic and medicinal plant spreading in the Mediterranean area. The main uses of myrtle plants are liqueur essential oil production with several biological properties. A large part properties these products due to phenolic compounds. Twenty-two cultivars originating from areas Sardinia Island cultivated at same site were analysed for compounds determination. Pearson’s correlation was used investigate a possible between content observed cultivation historical agrometeorological parameters sites cultivar origin. Hierarchical cluster analysis (HCA) principal component (PCA) applied data evaluate characterization based on relationship origin their climate traits as recorded field comparison. Anthocyanins negatively correlated minimum, maximum, average temperatures some months. Total phenols decreases high summer Rainfall affected mainly tannins content. Two components explained about 79% variability allowed classification into four groups, while Laconi, Siniscola Cuglieri not included any group. HCA subdivision wild populations three clusters.