USDA ACCESSION NO.: 21281
SELECTION: Open pollinated seedling selection made by Professor E.R. Salmon at Wye College, England, in the 1920's or early 1930s.
PEDIGREE: Female OS99 x OP; OS99 arose from an open pollinated seed collected on the female B20, a plant of unknown origin of the Golding class according to a letter from Dr. R.A. Neve, head of the Dept. of Hop Research, Wye College, April 30, 1975. Neve says "Salmon conentrated very much on American seedlings and the open pollination could easily have involved a wild American parent. The oil chromatograms of Comet (USDA 62013) and Sunshine are similar."
PRIMARY SITE: USDA-ARS World Hop Cultivar Collection, Corvallis, Oregon, OSU East Farm
ORIGIN: Seedling selection
DATE RECEIVED: December 6, 1979, USDA Accession No. assigned in 1980
METHOD RECEIVED: Rhizomes
AVAILABILITY: No restrictions
REFERENCES: USDA-ARS Annual Report of Hop Research for 1979, p. 40.
USDA-ARS Annual Report of Hop Research for 1980, p. 45.
Salmon, E.S. 1946. Two new hops: 'Pride of Kent' and 'Sunshine Hop'. Leaflet. Wye College. 4 pp.
Wagner, T. 1978. Gene Pools of Hop Countries. p. 27. Institute for Hop Research, Zalec, Slovenia).
MATURITY: Medium-early to medium
LEAF COLOR: Lemon yellow, light green
DISEASES: Downy Mildew: moderately resistant
Verticillium wilt: unknown
VIGOR: Fair to good
YIELD: Poor, 500-800 lbs/acre
SIDEARM LENGTH: 12-20 inches
ALPHA ACIDS: 7.5% (3-year range 6.7-8.2%)
BETA ACIDS: 2.7% (3-year range 2.1-3.1%)
STORAGE STABILITY: Fair to poor (retained 50% of original alpha acids after 6-months room temperature storage
OIL: 1.35 ml/100 g; H/C - 0.19; humulene 0.9%, almost not present at all; myrcene above 55% of the oil
MAJOR TRAITS: Lemon yellow leaf color, which persists throughout the whole growing season. This seems to be a single gene since crosses between yellow-leaved females and males segregate in the ratio 1:2:1 albino:yellow:green.
OTHER INFORMATION: This hop is an oddity because of its yellow leaf color and has value as an ornamental. Open-pollinated seedling of Sunshine, USDA 19120, is the mother of Comet (USDA 62013) from which Comet retained a slightly yellowish leaf coloring which is conspicuous in early spring but disappears later during the growing season. Due to the pale yellow leaf color of Sunshine the leaves often show necrotic burn in late summer due to heavy sunlight exposure. A yellow-leaf type called Humulus lupulus var. aureus is sold in the ornamental trade according to Gary Koller, Arnold Arboretum, Harvard University.