Origin: in Davis, Calif., by H.P. Olmo and Albert T. Koyama, California Agr. Expt. Sta. Plant patent 4784; 3 Nov. 1981. Introd. in 1980. Named to commemorate the centennial of the Dept. of Viticulture and Enology. Gold × Q 25-6 (F2 sel. Emperor × Pirovano 75). Cross made in 1966; first fruited in 1970; selected and tested as seedling 31-123F. Cluster: medium to large; conical; well-filled to loose; self-thinning at fruit set. Berry: ovoid elongated; yellow-green; mostly parthenocarpic, with less seed development than Thompson Seedless; very large for a seedless grape, 1.6 × 2.5 cm; ripens early August at Fresno, Calif.; adherence good; produces large raisins of excellent quality with mild Muscat flavor; very responsive to application of gibberellic acid in increasing berry size. Tree: Fruit:
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