USDA ACCESSION NO.: 21490
SELECTION: Seedling selection Nr. 8309-37 from cross Nr. 9, made at Corvallis, OR in 1983.
PEDIGREE: USDA 21397 x USDA 21381M; Tetraploid Hallertauer mittelfrueh x (Cascade x USDA 65009-64034M)
PRIMARY SITE: USDA-OSU Experimental hop farm, East Farm, Corvallis, OR.
ORIGIN: Seedling selection from a controlled cross made by Dr. Alfred Haunold at Corvallis, OR in 1983.
DATE RECEIVED: 1983
METHOD RECEIVED: Seedling selection
AVAILABITLITY: no restrictions, publicly released hop variety
REFERENCES: USDA-ARS. Notice of Release of Crystal, a new aroma hop cultivar. Washington DC, July 1993.
Alfred Haunold, Gail B. Nickerson, Ulrich Gampert, Donna Kling, and Stephen T. Kenny. 1995. Liberty and Crystal - two new US-developed Aroma hops. J. Amer. Society of Brewing Chemists 53: 9 - 13. 1995.
MATURITY: medium late to late
LEAF COLOR: dark green
DISEASES: downy mildew: moderately susceptible
Verticillium wilt: resistant
Viruses: free of all major hop viruses at the time of its release
VIGOR: very good
YIELD: very good, 1,800 to 2,200 lbs/acre
SIDE ARM LENGTH: 24 to 48 inches
ALPHA ACIDS: 2.8 to 4.4%
BETA ACIDS: 5.8 to 7.0 %
COHUMULONE: 21 to 26%
STORAGE STABILITY: fair to good, lost an average of 35% of original alpha acids after 6 months room temperature storage
OIL: 0.82 ml/100 g. Humulene 26%, caryophyllene 7/7%, farnesene- trace, Myrcene 47%. Ratio of Humulene/Caryophyllene = 3.38
MAJOR TRAITS: Similar oil profile as Hallertauer mittelfrueh; pleasant continental-type aroma; suitable for flavoring beers and ales when Hallertaur-type aroma is desired.
OTHER INFORMATION: Crystal is a half-sister of Mt. Hood (USDA 21455), Liberty (USDA 21457), and Ultra (USDA 21484).
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