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ARS Home » Pacific West Area » Corvallis, Oregon » Forage Seed and Cereal Research Unit » Research » Publications at this Location » Publication #346434
Title: Registration of high alpha-acid male hop germplasm 'USDA 21267M'

Author
item Henning, John
item Gent, David - Dave
item TOWNSEND, M - Oregon State University
item HAUNOLD, ALFRED - Retired ARS Employee

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/3/2018
Publication Date: 9/13/2018
Citation: Henning, J.A., Gent, D.H., Townsend, M.S., Haunold, A. 2018. Registration of high alpha-acid male hop germplasm 'USDA 21267M'. Journal of Plant Registrations. 12:382-385. https://doi.org/10.3198/jpr2017.09.0068crg.
DOI: https://doi.org/10.3198/jpr2017.09.0068crg

Interpretive Summary: USDA 21267M was released to the public in 2011 as male hop germplasm that has demonstrated genetic potential for developing offspring with high alpha acids--the bittering chemicals found in hops used in beer brewing. The defining characteristics of USDA 21267M are its high alpha acid levels observed in lupulin glands as well as good breeding value for yield, alpha and beta acid levels along with high xanthohumol levels. It is expected that hop breeders will utilize this germplasm as a parent for high-yielding, high-alpha hop breeding material. The release of USDA 21267M will provide both public and private breeders new germplasm for varietal development.

Technical Abstract: USDA 21267M (PI __________, CV-__________) was released to the public Dec 6th, 2011. This germplasm has been utilized by USDA-ARS for hop (Humulus lupulus l.) varietal development for several decades. Non-agency interest in this germplasm was expressed and release of this material is considered beneficial for the US public. USDA 21267M arose from a cross, made in 1973 involving the hop variety ‘Comet’ and the USDA-ARS hop male germplasm, ‘21110M’. The defining characteristics of USDA 21267M are its high alpha acid levels observed in lupulin glands as well as good breeding value for yield, alpha and beta acid levels along with high xanthohumol levels. It is expected that hop breeders will utilize this germplasm as a parent for high-yielding, high-alpha hop breeding material. The release of USDA 21267M will provide both public and private breeders new germplasm for varietal development.