Fig. 2

Relationship between berry size and presence of normal seeds in Sangiovese and its seedless variants. (a) Classification of berries according to size; the prevalent type of seeds or seed traces is shown at the bottom. (b) Representative berries from Corinto Nero (on the left) and Sangiovese (on the right). (c) Percentage distribution of berries according to size and seed content. The percentage of small, medium and large berries was calculated from the total number of berries per bunch, while the percentage of seeded berries was established on the total number of berries opened for seed examination (it was a representative portion of the total number of berries when this number was too big). Berries with apparently normal seeds were considered as seeded, whereas berries containing only rudimental seeds, seed traces or unfertilized ovules were classified as seedless. For each combination of accession, season and pollination treatment, from one to nine clusters were analyzed and an average value was calculated. Abbreviations: CN = Corinto Nero, TN = Termarina Nera, SG = Sangiovese in the Grinzane Cavour collection (Corinto Nero plants from two distinct parcels were analyzed in 2017); CN*, SG* = Corinto Nero, Sangiovese in the FEM collection, respectively