USDA ACCESSION NO.: 21045

SELECTION: no information

GENUS: Humulus

SPECIES: lupulus

CULTIVAR: Serebrianka, Silver Hop

PEDIGREE: no information

PRIMARY SITE: initially at USDA/OSU Hop Research Farm, Corvallis, OR. Discarded in 1991 bewcause it was very weak and almost impossible to maintain in the collection

ORIGIN: Institute for Plant Research, Leningrad, USSR (now: St. Petersburg, Russia)

DATE RECEIVED: spring 1971 via Dr. J.L. Creech, New Crops Branch, USDA, ARS

P.I. number 376933

METHOD RECEIVED: rhizomes

AVAILBILITY: no restrictions

REFERENCES: Annual Reports for Hop Research, USDA/ARS, 1971 and later years

MATURITY: early

LEAF COLOR: dark green

SEX: female

DISEASES: Downy mildew: moderately resistant

Powdery mildew: no information

Verticillium wilt; no information

Viruses: no information

VIGOR: poor

YIELD: very poor

SIDE ARM LENGTH: 6 - 12 inches

ALPHA ACIDS: 3 - 4 %

BETA ACIDS: 3 %

COHUMULONE: 23 %

STORAGE STABILITY: poor, retained about 53% of its original alpha acids after 6 months room temperature storage

OIL: 0.41 ml/100 g. Humulene 27%; caryophyllene 8 %; farnesene 12%; myrcene 30%; H/C ratio = 3.30

MAJOR TRAITS: high humulene and high farnesene content, pleasant continental aroma

OTHER INFORMATION: This hop is part of the female pedigree of Cascade (USDA 56013). Serebrianka may be related to Saazer (USDA 21077) .