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» John Henning
John Henning
Research Geneticist (Plants)
Research Geneticist (Plants)
3450 SW Campus Way
Corvallis, OR 97331
(541) 738-4145
Our program goals are to develop advanced hop germplasm and cultivars that incorporate superior pest and disease resistance, increased yield, and enhanced brewing characteristics. We are also heavily involved with basic genetic research using both traditional and molecular genetic techniques.
Hops Chemical Summaries Database
Pedigree of Hops Cultivars (pdf) displaying the ancestry of cultivars developed or co-developed by the USDA-ARS Hop Breeding & Genetics program
Preparing Samples for Chemical Analysis
Hops Seedlings in Greenhouse Flats
Development of Superior Hops and Resilient Hop Production Systems In-House Appropriated (D) Accession Number:445259 
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- Identification of quantitative trait loci involved in R1-mediated resistance to powdery mildew and sex determination in hop (Humulus lupulus L.) -(Peer Reviewed Journal)
Havill, J.S., Richardson, B.J., Rohwer, C.L., Gent, D.H., Henning, J.A., Muehlbauer, G.J. 2023. Identification of quantitative trait loci involved in R1-mediated resistance to powdery mildew and sex determination in hop (Humulus lupulus L.). Journal of Theoretical and Applied Genetics. 136. Article 154. https://doi.org/10.1007/s00122-023-04399-7. - Genetic characterization of downy mildew resistance from the hop (Humulus lupulus L.) line USDA 64035M -(Peer Reviewed Journal)
Olatoye, O.M., Wiseman, M., Gent, D.H., Henning, J.A., Altendorf, K.R. 2022. Genetic characterization of downy mildew resistance from the hop (Humulus lupulus L.) line USDA 64035M. Crop Science. 63(3):1082-1091. https://doi.org/10.1002/csc2.20880. - Registration of seven powdery mildew-resistant wild hop germplasm lines -(Peer Reviewed Journal)
Havill, J.S., Wiseman, M.S., Henning, J.A., Gent, D.H., Muehlbauer, G.J. 2022. Registration of seven powdery mildew-resistant wild hop germplasm lines. Journal of Plant Registrations. 17(1):171-179. https://doi.org/10.1002/plr2.20255. - An improved assembly of the “Cascade” hop (Humulus lupulus) genome uncovers signatures of molecular evolution and refines time of divergence estimates for the Cannabaceae family -(Peer Reviewed Journal)
Padgitt-Cobb, L.K., Pitra, N.J., Matthews, P.D., Henning, J.A., Hendrix, D.A. 2022. An improved assembly of the “Cascade” hop (Humulus lupulus) genome uncovers signatures of molecular evolution and refines time of divergence estimates for the Cannabaceae family. Horticulture Research. 10(2). Article uhac281. https://doi.org/10.1093/hr/uhac281. - Two fingerprinting sets for Humulus lupulus based on KASP and microsatellite markers -(Peer Reviewed Journal)
Driskill, M.J., Pardee, K., Hummer, K.E., Zurn, J., Amundsen, K., Wiles, A., Wiedow, C., Patzak, J., Henning, J.A., Bassil, N.V. 2022. Two fingerprinting sets for Humulus lupulus based on KASP and microsatellite markers. PLoS ONE. 17(4). Article e0257746. https://doi.org/10.1371/journal.pone.0257746. - Two fingerprinting sets for Humulus lupulus based on KASP and microsatellite markers-(Pre-print Publication)
- Gene expression of agronomically important secondary metabolites in cv. ‘USDA Cascade’ hop (Humulus lupulus L.) cones during critical developmental stages -(Peer Reviewed Journal)
Eriksen, R.L., Padgitt-Cobb, L.K., Randazzo, A., Hendrix, D., Henning, J.A. 2021. Gene expression of agronomically important secondary metabolites in cv. ‘USDA Cascade’ hop (Humulus lupulus L.) cones during critical developmental stages. Journal of the American Society of Brewing Chemists. https://doi.org/10.1080/03610470.2021.1973328. - The long-read genome assembly of hop (Humulus lupulus) uncovers the pseudoautosomal region and other genomic features -(Peer Reviewed Journal)
Padgitt-Cobb, L.K., Kothen-Hill, S.T., Henning, J.A., Hendrix, D.A. 2021. The long-read genome assembly of hop (Humulus lupulus) uncovers the pseudoautosomal region and other genomic features. Acta Horticulturae. 1328. https://doi.org/10.17660/ActaHortic.2021.1328.1. - Registration of high-yielding aroma hop (Humulus lupulus L.) cultivar, ‘USDA Triumph' -(Peer Reviewed Journal)
Henning, J.A., Townsend, M., Gent, D.H., Wiseman, M., Walsh, D., Groenendale, D., Randazzo, A. 2021. Registration of high-yielding aroma hop (Humulus lupulus L.) cultivar, ‘USDA Triumph'. Journal of Plant Registrations. 15(2):244-252. https://doi.org/10.1002/plr2.20138. - Two DNA-based fingerprinting sets for hops-(Abstract Only)
Driskill, M.J., Hummer, K.E., Zurn, J., Amundsen, K., Wiles, A., Wiedow, C., Jakse, J., Henning, J.A., Bassil, N.V. 2022. Two DNA-based fingerprinting sets for hops. Abstract for 65th Annual American Hop Convention; 1/18/21-1/22/21; Virtual. - Gene expression for secondary metabolite biosynthesis in hop (Humulus lupulus L.) leaf lupulin glands exposed to heat and low-water stress -(Peer Reviewed Journal)
Eriksen, R.L., Padgitt-Cobb, L., Townsend, M., Henning, J.A. 2021. Gene expression for secondary metabolite biosynthesis in hop (Humulus lupulus L.) leaf lupulin glands exposed to heat and low-water stress. Scientific Reports. 11. Article 5138. https://doi.org/10.1038/s41598-021-84691-y. - Registration of high-yielding aroma hop (Humulus lupulus L.) cultivar ‘USDA Triumph’ -(Germplasm Registration)
Henning, J.A., Townsend, M.S., Gent, D.H., Wiseman, M.S., Walsh, D.B., Groenendale, D.P. 2021. Registration of high-yielding aroma hop (Humulus lupulus L.) cultivar ‘USDA Triumph’. Journal of Plant Registrations. 15(2):244-252. https://doi.org/10.1002/plr2.20138. - Two DNA-based fingerprinting sets for hops-(Abstract Only)
Driskill, M.J., Hummer, K.E., Zurn, J., Amundsen, K., Wiles, A., Wiedow, C., Jakse, J., Henning, J.A., Bassil, N.V. 2021. Two DNA-based fingerprinting sets for hops. Meeting Abstract for 65th Annual American Hop Convention, Virtual, January 18-22, 2021. - A draft phased assembly of the diploid Cascade hop (Humulus lupulus) genome -(Peer Reviewed Journal)
Padgitt-Cobb, L.K., Kingan, S.B., Wells, J., Elser, J., Kronmiller, B., Moore, D.L., Concepcion, G., Peluso, P., Rank, D., Jaiswal, P., Henning, J.A., Hendrix, D.A. 2021. A draft phased assembly of the diploid Cascade hop (Humulus lupulus) genome. The Plant Genome. 14(1). Article e20072. https://doi.org/10.1002/tpg2.20072. - Photosynthetic activity of six hop (Humulus lupulus L.) cultivars under different temperature treatments -(Peer Reviewed Journal)
Eriksen, R.L., Rutto, L.K., Dombrowski, J.E., Henning, J.A. 2020. Photosynthetic activity of six hop (Humulus lupulus L.) cultivars under different temperature treatments. HortScience. 55(4):403-409. https://doi.org/10.21273/HORTSCI14580-19. - Genomic analysis of powdery mildew resistance in a hop (Humulus lupulus L.) bi-parental population segregating for “R6-locus” -(Peer Reviewed Journal)
Padgitt-Cobb, L., Kingan, S.B., Henning, J.A. 2019. Genomic analysis of powdery mildew resistance in a hop (Humulus lupulus L.) bi-parental population segregating for “R6-locus”. Euphytica. 216:10. https://doi.org/10.1007/s10681-019-2543-x. - Transcriptome analysis of the model grass Lolium temulentum exposed to green leaf volatiles -(Peer Reviewed Journal)
Dombrowski, J.E., Kronmiller, B.A., Hollenbeck, V.G., Rhodes, A., Henning, J.A., Martin, R.C. 2019. Transcriptome analysis of the model grass Lolium temulentum exposed to green leaf volatiles. Biomed Central (BMC) Plant Biology. 19:222. https://doi.org/10.1186/s12870-019-1799-6. - Registration of high alpha-acid male hop germplasm 'USDA 21267M' -(Peer Reviewed Journal)
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. - Registration of downy mildew resistant male hop germplasm 'USDA 21087M' -(Peer Reviewed Journal)
Henning, J.A., Gent, D.H., Townsend, M.S., Haunold, A. 2018. Registration of downy mildew resistant male hop germplasm 'USDA 21087M'. Journal of Plant Registrations. 12:379-381. https://doi.org/10.3198/jpr2017.09.0067crg. - HopBase: A unified resource for Humulus genomics-(Peer Reviewed Journal)
Hill, S., Sudarsanam, R., Henning, J.A., Hendrix, D. 2017. HopBase: A unified resource for Humulus genomics. Database: The Journal of Biological Databases and Curation. 2017(1):bax009. doi: 10.1093/database/bax009. - QTL examination of a bi-parental mapping population segregating for “short-stature” in hop (Humulus lupulus L.)-(Peer Reviewed Journal)
Henning, J.A., Hill, S., Darby, P., Hendrix, D. 2017. QTL examination of a bi-parental mapping population segregating for “short-stature” in hop (Humulus lupulus L.). Euphytica. 213:77. doi: 10.1007/s10681-017-1848-x. - QTL analysis of resistance to powdery mildew in Hop (Humulus lupulus L.)-(Peer Reviewed Journal)
Henning, J.A., Gent, D.H., Townsend, M.S., Twomey, M., Hill, S.T., Hendrix, D. 2017. QTL analysis of resistance to powdery mildew in Hop (Humulus lupulus L.). Euphytica. 213:98. doi: 10.1007/s10681-017-1849-9. - Genomics of the hop psuedo-autosomal regions-(Peer Reviewed Journal)
Hill, S.T., Coggins, J., Liston, A., Hendrix, D., Henning, J.A. 2016. Genomics of the hop psuedo-autosomal regions. Euphytica. 209:171-179. doi: 10.1007/s10681-016-1655-9. - Genotyping-by-sequencing of a bi-parental mapping population segregating for downy mildew resistance in hop (Humulus lupulus L.)-(Peer Reviewed Journal)
Henning, J.A., Gent, D.H., Twomey, M.C., Townsend, M.S., Pitra, N.J., Matthews, P.D. 2015. Genotyping-by-sequencing of a bi-parental mapping population segregating for downy mildew resistance in hop (Humulus lupulus L.). Euphytica. 208(3):545-559. doi: 10.1007/s10681-015-1600-3. - Simple SNP-based minimal marker genotyping for (Humulus lupulus L.) identification and variety validation-(Peer Reviewed Journal)
Henning, J.A., Coggins, J., Peterson, M. 2015. Simple SNP-based minimal marker genotyping for (Humulus lupulus L.) identification and variety validation. BMC Research Notes. 8(1):1-12. doi: 10.1186/s13104-015-1492-2. - Precision QTL mapping of downy mildew resistance in Hop (Humulus lupulus L.)-(Peer Reviewed Journal)
Henning, J.A., Gent, D.H., Twomey, M., Townsend, M.S., Pitra, N., Matthews, P. 2015. Precision QTL mapping of downy mildew resistance in Hop (Humulus lupulus L.). Euphytica. 202(3):487-498. - High-throughput genotyping of hop (Humulus lupulus L.) utilising diversity arrays technology (DArT)-(Peer Reviewed Journal)
Howard, E., Whittock, S.P., Jakse, J., Carling, J., Matthews, P.D., Probasco, G., Henning, J.A., Darby, P., Cerenak, A., Javornik, B., Kilian, A., Koutoulis, A. 2011. High-throughput genotyping of hop (Humulus lupulus L.) utilising diversity arrays technology (DArT). Theoretical and Applied Genetics. 122(7):1265-1280. - QTL Mapping of Powdery Mildew Susceptibility in Hop (Humulus lupulus L)-(Peer Reviewed Journal)
Henning, J.A., Townsend, M.S., Gent, D.H., Bassil, N.V., Matthews, P., Buck, E., Beaston, R. 2011. QTL Mapping of Powdery Mildew Susceptibility in Hop (Humulus lupulus L). Euphytica. 180:411-420. - Predicting Offspring Performance in Hop (Humulus lupulus L.) Using AFLP Markers-(Peer Reviewed Journal)
Henning, J.A., Townsend, M.S., Matthews, P. 2010. Predicting Offspring Performance in Hop (Humulus lupulus L.) Using AFLP Markers. Journal of American Society of Brewing Chemists. 68(3):125-131. - AFLP Discrimination of Wild American and Cultivated Hop-(Peer Reviewed Journal)
Townsend, M.S., Henning, J.A. 2009. AFLP Discrimination of Wild American and Cultivated Hop. Crop Science. 49:600-607. - Hop Cultivars and Breeding-(Book / Chapter)
Henning, J.A., Pethybridge, S.J., Gent, D.H. 2009. Hop Cultivars and Breeding. In: Mahaffee, W.F., Pethybridge, S.J., Gent, D.H., editors. Compendium on Hop Diseases and Pests. St. Paul, MN: APS Press. p. 11-13. - Powdery Mildew Resistant Hop Germplasm Release: 'Kazak 2000'-(Abstract Only)
Hummer, K.E., Gent, D.H., Henning, J.A., Mahaffee, W.F., Ocamb, C. 2008. Powdery Mildew Resistant Hop Germplasm Release: 'Kazak 2000' [abstract]. Acta Horticulturae. p.59 - Genic SSRs for European and North American Hop (Humulua lupulus L.)-(Peer Reviewed Journal)
Bassil, N.V., Gilmore, B.S., Oliphant, J.M., Hummer, K.E., Henning, J.A. 2007. Genic SSRs for European and North American Hop (Humulua lupulus L.). Genetic Resources and Crop Evolution. Available: www.springerlink.com/content/d000k04454n55v2p/fulltext.pdf - Registration of 'Teamaker' Hop-(Peer Reviewed Journal)
Henning, J.A., Haunold, A., Townsend, M.S., Gent, D.H., Parker, T. 2008. Registration of 'Teamaker' Hop. Journal of Plant Registrations.2(1):13-14. - POTENTIAL HETEROTIC GROUPS IN HOP AS DETERMINED BY AFLP ANALYSIS-(Peer Reviewed Journal)
Townsend, M.S., Henning, J.A. 2005. Potential Heteroitc groups in hop as determined by aflp analysis. Crop Science. v.45. p. 1901-1907. - PROCEEDINGS OF THE FIRST INTERNATIONAL HUMULUS SYMPOSIUM-(Book / Chapter)
Hummer, K.E., Henning, J.A. 2005. Proceedings of the first international humulus symposium. Acta Horticulturae.668. Leuven, Belgium:ISHS. p.262. - FIELD-BASED ESTIMATES OF HERITABILITY AND GENETIC CORRELATIONS IN HOP (HUMULUS LUPULUS L.)-(Peer Reviewed Journal)
Henning, J.A., Townsend, M.S. 2005. Field-based estimates of heritability and genetic correlations in hop. Crop Science. v. 45(4) - SEX MOLECULAR MARKERS REVEAL DIFFERENCES OF Y-CHROMOSOME MOLECULAR STRUCTURE AMONG HOPS OF EUROPEAN AND AMERICAN ORIGIN-(Book / Chapter)
Danilova, T.V., Henning, J.A. 2005. Sex molecular markers reveal differences of y-chromosome molecular structure among hops of european and american origin. Acta Horticulturae. (ISHS) 668:85-92. - GENBANK-DERIVED MICROSATELLITE MARKERS IN HOPS-(Peer Reviewed Journal)
Bassil, N.V., Gilmore, B.S., Oliphant, J.M., Henning, J.A., Hummer, K.E. 2005. Genbank-derived microsatellite markers in hops. Acta Horticulturae. 668:47-52. - POTENTIAL HETEROTIC CROSSES IN HOPS (HUMULUS LUPULUS L.) AS ESTIMATED BY AFLP-BASED GENETIC DIVERSITY AND COEFFICIENT OF COANCESTRY-(Peer Reviewed Journal)
Henning, J.A., Townsend, M.S., Kenny, S. 2004. Potential heterotic crosses in hops (humulus lupulus l.) as estimated by aflp-based genetic diversity and coefficient of coancestry. Journal of American Society of Brewing Chemists. 62(2):63-70. - REGISTRATION OF NEWPORT HOP-(Peer Reviewed Journal)
Henning, J.A., Townsend, M.S., Mahaffee, W.F., Kenny, S., Haunold, A. 2004. Registration of newport hop. Crop Science.44:1018-1019. - GENETIC DIVERSITY AMONG WORLD HOP ACCESSIONS-(Peer Reviewed Journal)
HENNING, J.A., STEINER, J.J., HUMMER, K.E. GENETIC DIVERSITY AMONG WORLD HOP ACCESSIONS. CROP SCIENCE. 2004. v.44. p. 411-417. - NOTICE OF RELEASE OF HIGH-YIELDING, MULTI-DISEASE RESISTANT, HIGH BITTERINGACID HOP VARIETY 'NEWPORT'-(Germplasm Release)
Henning, J.A. 2002. Notice of release of high-yielding, multi-disease resistant, high bitteringacid hop variety 'newport'. Germplasm Release. - USE OF HOP (HUMULUS LUPULUS) AGRICULTURAL BY-PRODUCTS FOR THE REDUCTION OF AQUEOUS LEAD(II) ENVIRONMENTAL HEALTH HAZARDS-(Peer Reviewed Journal)
GARDEA-TORRESDEY, J., HEJAZI, M., TIEMANN, K., PARSONS, J.G., DUARTE-GARDEA, M., HENNING, J.A. USE OF HOP (HUMULUS LUPULUS) AGRICULTURAL BY-PRODUCTS FOR THE REDUCTION OF AQUEOUS LEAD(II) ENVIRONMENTAL HEALTH HAZARDS. JOURNAL OF HAZARDOUS MATERIALS. 2002. V.95.P.112. - AFLP ANALYSIS OF DNA FROM DRIED HOP CONES-(Peer Reviewed Journal)
- HERITABILITIES OF WATER USE EFFICENCY TRAITS AND CORRELATIONS WITH AGRONOMIC TRAITS IN WATER-STRESSED ALFALFA-(Peer Reviewed Journal)
- DIFFERENTIAL UPTAKE OF TEN MINERALS AMONG FOUR BASIC ALFALFA GERMPLASMS-(Peer Reviewed Journal)
- REGISTRATION OF NMCOMP81-BAA1 ALFALFA GERMPLASM-(Peer Reviewed Journal)
- VARIATION FOR YIELD, WATER-USE EFFICIENCY, AND CANOPY MORPHOLOGY AMONG NINE ALFALFA GERMPLASMS-(Peer Reviewed Journal)
- ESTIMATES OF HERITABILITY AND GENETIC CORRELATION FOR FIVE TRAITS IN FEMALE HOP ACCESSIONS-(Peer Reviewed Journal)
- GENETIC PARAMETER ESTIMATES FOR FIVE TRAITS IN MALE HOP ACCESSIONS-(Peer Reviewed Journal)
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