Sardinia is characterized by a huge number of cultivars traditionally considered as landraces (Lovicu 2007). This variability could be the result of an heterogeneous origin characterizing the Sardinian grapevine platform. Some of these cultivars are considered to be the product of different events, such as direct domestications from local wild grapes and others could have been imported from elsewhere. The Sardinian grapevine germplasm could also have been enriched through breeding events among local varieties and wild plants. This is the result of the ancient and rich history of viticulture of Sardinia, an island that has been colonised by different populations, some with their specific grapevine varieties and viticultural techniques (De Mattia et al. 2007). Among the autochthons landraces of Sardinian Vitis vinifera L. subsp. vinifera, some accessions from different varieties, were collected during three years (2005-2006-2008) in the experimental fields of Agricultural Research Agency of Sardinia (AGRIS) – Ussana (CA) and stored at AGRIS – Uta (CA). The pips images were acquired at the Germplasm Bank of Sardinia (BG-SAR) using a flatbed scanner, and successively analysed at the Stazione Consorziale Sperimentale di Granicoltura per la Sicilia (SSG) with a specifically developed macro VITIS.mcr based on Image Analysis software KS 400. The morpho-colorimetric data and elliptic Fourier descriptors obtained, were elaborated by Linear Discriminant Analysis to build a statistical classifier able to identify the landraces through pip traits (Bacchetta et al. 2008). Moreover, expected results consist to draw phyletic relationship between Sardinian landraces and some archaeological pips, founded inside a Phoenician-Punic amphora (IV-III B.C.) on the Coltellazzo (Pula) island seabed, close to Cagliari.
Image analysis a new tool for pips morpho-colorimetric measurements of the Sardinian landraces of Vitis vinifera L
BACCHETTA, GIANLUIGI;ORRU', MARTINO;
2009-01-01
Abstract
Sardinia is characterized by a huge number of cultivars traditionally considered as landraces (Lovicu 2007). This variability could be the result of an heterogeneous origin characterizing the Sardinian grapevine platform. Some of these cultivars are considered to be the product of different events, such as direct domestications from local wild grapes and others could have been imported from elsewhere. The Sardinian grapevine germplasm could also have been enriched through breeding events among local varieties and wild plants. This is the result of the ancient and rich history of viticulture of Sardinia, an island that has been colonised by different populations, some with their specific grapevine varieties and viticultural techniques (De Mattia et al. 2007). Among the autochthons landraces of Sardinian Vitis vinifera L. subsp. vinifera, some accessions from different varieties, were collected during three years (2005-2006-2008) in the experimental fields of Agricultural Research Agency of Sardinia (AGRIS) – Ussana (CA) and stored at AGRIS – Uta (CA). The pips images were acquired at the Germplasm Bank of Sardinia (BG-SAR) using a flatbed scanner, and successively analysed at the Stazione Consorziale Sperimentale di Granicoltura per la Sicilia (SSG) with a specifically developed macro VITIS.mcr based on Image Analysis software KS 400. The morpho-colorimetric data and elliptic Fourier descriptors obtained, were elaborated by Linear Discriminant Analysis to build a statistical classifier able to identify the landraces through pip traits (Bacchetta et al. 2008). Moreover, expected results consist to draw phyletic relationship between Sardinian landraces and some archaeological pips, founded inside a Phoenician-Punic amphora (IV-III B.C.) on the Coltellazzo (Pula) island seabed, close to Cagliari.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
