Original research articles

Microsatellite analysis to define genetic diversity of grapevines (Vitis vinifera L.) grown in Central and Western Mediterranean countries

Abstract

PCR-based microsatellite analysis has been applied to define the relationships among 238 grapevine cultivars selected as representative of local germplasm in the Central and Western Mediterranean regions.

The estimation of genetic distances among the five grapevines groups, based on cluster analysis, c2 tests and Principal Component Analysis, was coherent with a common geographic origin of cultivated grapes and of their primordial varietal radiation. In fact, genetic similarity was high among French and Iberian cultivars and among Greek and Balkan cultivars. The Italian grapes clustered in an intermediate position, reflecting its geographical location. Results show that the geographical distribution is consistent with a pattern of viticulture based on the origin of primordial varieties from regions in the Near East, and subsequent and multiple variety flows that linked different viticultural regions through different routes. This is coherent with the model of varietal diffusion proposed on the bases of archaeological and historical evidence, in which population movements and cultural exchange contributed to the phenomenon.

Authors


Massimo Labra

massimo.labra@unimi.it

Affiliation : Department of Biotechnology and Biosciences, University of Milano Bicocca, Plazza della Scienza 2, 20126 Milano, Italy


Osvaldo Failla

Affiliation : Dipartimento di Scienze Agrarie e Ambientali, Università di Milano, Via Celoria 2, 20133 Milano, Italy


Gaetano Forni

Affiliation : Lombard Museum of History of Agriculture, Sant'Angelo Lodigiano, Italy


Alessandra Ghiani

Affiliation : Department of Biology, University of Milano, Via Celoria 26, 20133 Milano, Italy


Attilio Scienza

Affiliation : Department of Crop Science, University of Milan, Via Celoria 2, 20133 Milan, Italy


Francesco Sala

Affiliation : Department of Biology, University of Milano, Via Celoria 26, 20133 Milano, Italy

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