USDA ACCESSION No.: 21670

SELECTION: no information, except that the male parent is 50% Hallertauer mf (USDA 56001 or 21014)

GENUS: Humulus

SPECIES: lupulus

CULTIVAR: Hallertauer Magnum, also called Magnum

PEDIGREE: Galena (USDA 21182) x German male hop Nr. 75/5/3

PRIMARY SITE: USDA-OSU hop yard, East Farm, Corvallis, OR

ORIGIN: German Hop Research Institute Huell, Germany

DATE RECEIVED: spring 1992

METHOD RECEIVED: rhizomes

AVAILBILITY: no restrictions, commercial cultivar

REFERENCES: Annual Report for USDA Hop Research 1992 and later years

German Society for Hop Research Annual reports starting in the 1980's

MATURITY: medium to medium late

LEAF COLOR: medium dark green

SEX: female

DISEASES: Downy mildew: resistant to moderately resistant

Verticillium wild: resistant

Powdery mildew: susceptible

Viruses: free of all 5 major hop viruses at time of receipt

VIGOR: very good

YIELD: very good

SIDE ARM LENGTH: 20 to 40 inches

ALPHA ACIDS: 12 to 17%

BETA ACIDS: 5 to 6%

COHUMULONE: 26 to 28%

STORAGE STABILITY: good to very good, retained over 90% of original alpha acids after 6 months storage at room temperature

OIL: 2.33 ml/100 g (4 year range: 1.2 to 3.7 ml/100 g); myrcene 60.5%; humulene 18.5%; caryophyllene 4.1%; farnesene trace; H/C ratio = 3.50

MAJOR TRAITS: very high alpha acids content; good storge stability, low cohumulone content, very good yield potential

OTHER INFORMATION: Very large cones that tend to break up and shatter during picking. Some tendency to form angel cones (small leaflets in the cone which drives up leaf and stem data. The hop is a diploid, 2n= 20. This hop is the major high-alpha hop in Germany and is rapidly becoming the most widely grown hop in that country.

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