Risultati vegeto-produttivi di sette nuovi cloni di Sangiovese nel territorio di produzione del Chianti Classico

Clonal selection of the main varieties utilised for the production of the DOCG Chianti Classico red wine was planned in the project ‘Chianti Classico 2000’ Research was initiated on 1988-89 with a systematic work performed in the production area of Chianti Classico, beginning with the identification of plants of the grapevine varieties ‘Sangiovese’, ‘Canaiolo nero’ and ‘Colorino’ having ampelograhic, sanitary, agronomical and technological interesting characteristics. During the first phase of the work were identified 239 plants belonging from ‘Sangiovese’, ‘Canaiolo nero’ and ‘Colorino’, which were subjected from the Department ‘Coltivazione e Difesa delle Specie Legnose’, section of Plant Pathology, to tests for virus detection according to the national procedure for clonal selection. Candidate clones virus-free were planted in two different vineyards located in the ‘Chianti Classico’ area in order to make comparative ampelographic, yield and technological observations. Plants from each candidate clone were maintained isolated as primary source in screenhouse from the Plant Pathology section. The Ministry of Agriculture and Forestry Politics (M.i.P.A.F.) with a specific ministerial law (D.M. n. 31434 of 01 March 1999), has authorised the homologation of four ‘Sangiovese’ clones, named ‘CCL 2000/1’, ‘CCL 2000/2’, ‘CCL 2000/3’ and ‘CCL 2000/4’, afterward the ministerial commission approved the homologation of three additional ‘Sangiovese’ clones named ‘CCL 2000/5’,‘CCL 2000/6’ and ‘CCL 2000/7’. Considering the importance which the ‘Sangiovese’ variety assumes in Tuscany and in Italy and the intense renewal of plantings taking place overall the country and in particular in the ‘Chianti Classico’, as the viticulturists require more detailed information on clonal material especially about clones selected in this territory, this work aimed to give further information on ampelograhic, bio-agronomical and oenological characteristics of the seven ‘Sangiovese’ clones homologated within this research project