USDA ACCESSION No.: 21079
SELECTION: clonal selection of a leaf color mutant
CULTIVAR: Blue Northern Brewer
PEDIGREE: Canterbury Golding x OB 21 (identical to Northern Brewer USDA 64107)
PRIMARY SITE: USDA/OSU Hop Research Farm, Corvallis, OR
ORIGIN: Ministry of Agriculture, Ieper Belgium. Mr. Depreterre, an official In the Belgian Agriculture adminisration found it as a mutant in a Commercial Norhern Brewer yard in Belgium.
DATE RECEIVED: spring 1974
METHOD RECEIVED: rhizomes
AVAILBILITY: no restrictions
REFERENCES: A. Haunold. Notice of releasae of Blue Northern Brewer hop, an ornamental. USDA. ARS. Washington DC October 272, 1992.
LEAF COLOR: dark reddish blue
DISEASES: Downy mildew: moderately resistant
Powdery mildew: no information
Verticillium wilt: tolerant to resistant
VIGOR: Viruses: free of PNRV , Apple Mosaic virus and American Hop Latent Virus
YIELD: very poor
SIDE ARM LENGTH: 6 - 12 inches
ALPHA ACIDS: 6 - 8%
BETA ACIDS: 3 - 4%
STORAGE STABILITY: good, retained 78% of its original alpha acids after 6 months room temperature storage
OIL: 0.76 ml/100 g. Humulene 29%; caryophyllene 1w0%; farnesene none; myrcene 27 - 40%; H/C ratio = 2.96
MAJOR TRAITS: dark blue leaf color, attractive as an ornamental
OTHER INFORMATION: The leaf color is likely due to a single gene. Crosses between Blue Northern Brewer and a male with dark stem pigmentation yhielded a number of seedling with very dark leaf color similar to the female parent. Some are now candidates for release as ornamental hops with much better vigor than the original Blue Northern Brewer.