USDA ACCESSION No.: 21676
SELECTION: seedling selection made at the Kirin Brewery Hop Research Farm, Japan
PEDIGREE: Northern Brewer (USDA 64107) x USDA 64103M; Note: The male parent is an open pollinated Wild American hop developed as "OB79" at Wye College, England
PRIMARY SITE: USDA/OSU Hop Research Farm, Corvallis, OR.
ORIGIN: Kirin Brewery Ltd. Research Farm, Iwate, Japan
DATE RECEIVED: spring 1992
METHOD RECEIVED: rhizomes
AVAILBILITY: no restrictions
REFERENCES: Annual Reports for Hops Research, USDA/ARS, 1992 and later years
Sho Hiriuchi and Atsushi Murakami. New Japanese hop varieties with high alpha acid content. J. Amer. Society of Brewing Chemists 50: 10-13. 1992.
MATURITY: medium to medium late
LEAF COLOR: dark green
DISEASES: Downy mildew: moderately susceptible
Powdery mildew: no information
Verticillium wilt: tolerant
Viruses: no information
YIELD: very good to poor, quite variable
SIDE ARM LENGTH: 24-36 inches
ALPHA ACIDS: 11 - 13 %
BETA ACIDS: 5 - 6 %
STORAGE STABILITY: fair to good, retained an average of 63% after 6 months room temperature storage
OIL: 1.06 ml/100 g. Humulene 9 - 12%; caryophyllene 4-5%; farnesene trace; myrcene 59%; H/C ratio = 2.07
MAJOR TRAITS: high yield potential, high alpha acids potential
OTHER INFORMATION: In Oregon test plots the alpha acids content was not as high as expected. This hop has largely been discontinued from commercial production in Japan due to some downy mildew problems.