USDA ACCESSION NO.: 21041

SELECTION: Seedling selection No. 6761-117 of cross 6761 made at Corvallis, Oregon in 1967.

GENUS: Humulus

SPECIES: lupulus

CULTIVAR: Willamette

PEDIGREE: Tetraploid Fuggle (USDA 21003) x Fuggle seedling 2-4

PRIMARY SITE: USDA World Hop Cultivar Collection, OSU East Farm

ORIGIN: Cross 6761 made in 1967 at Corvallis, Oregon

DATE RECEIVED: Selected and Accession Number assigned in 1971

METHOD RECEIVED: Seedling selection

AVAILABILITY: No restrictions, commercial cultivar

REFERENCES: Haunold, A., C. E. Homer, S. T. Likens, D. D. Roberts and C. E. Zimmermann. 1976. Registration of Willamette Hop. Crop Sci. 16: 739.

Haunold, A., S. T. Likens, C. E. Homer, G. B. Nickerson and C. E. Zimmermann. 1977. Columbia and Willamette, two new aroma type hop varieties. Brewer's Digest 52:36-39, 56.

MATURITY: Medium

LEAF COLOR: Dark green

SEX: Female

DISEASES: Downy Mildew: resistant

Verticillium Wilt: tolerant to moderately susceptible

Viruses: free of Prunus, Apple and Hop Mosaic Virus

VIGOR: Excellent

YIELD: Very good, 1700-2200 lbs/acre

SIDE ARM LENGTH: 24-40 inches

ALPHA ACIDS: 6.6% (10 year range: 5.2 to 11.1)

BETA ACIDS: 3.8% (10 year range: 2.9 to 5.0)

COHUMULONE: 29-35%

STORAGE STABILITY: Good

OIL: 0.8-1.2 ml/100 g. Humulene 21.2%; caryophyllene 7.4; myrcene 51.0%; farnesene 5.0%. H/C ratio = 2.89

MAJOR TRAITS: Triploid (2n = 30), seedless even in the presence of fertile males, high yield potential, Fuggle-type aroma profile.

OTHER INFORMATION: Used as Fuggle replacement by a major U.S. brewer. Grown primarily in Oregon, 2100 acres grown in 1986 (mostly in Oregon) produced 3.4 million lbs (6.9% of U.S. production). Major acreage expansion in 1987. In 1997 Willamette ranked third in US hop acreage (7,578 acres) and produced 11.144 mill.lbs



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