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United States Department of Agriculture

Agricultural Research Service

HEATHCLIFFE RIDAY
U.S. Dairy Forage Research Center
Research Geneticist

Phone: (608) 890-0077
Fax: (608) 890-0076
1925 LINDEN DRIVE WEST
MADISON, WI, 53706

Projects
Redesigning Forage Genetics, Management, and Harvesting for Efficiency, Profit, and Sustainability in Dairy and Bioenergy Production Systems
Appropriated (D)
  Accession Number: 424141
CONDUCTING DIGESTIBILITY TRIALS WITH LAMBS TO EVALUATE FORAGES
Specific Cooperative Agreement (S)
  Accession Number: 418773

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Modeling forage legume polycross pollen-parent gamete contributions to progeny based on empirical measurements with implications for effective polycross size - (Abstract Only)
Riday, H., Smith, M.A., Peel, M. 2014. Modeling forage legume polycross pollen-parent gamete contributions to progeny based on empirical measurements with implications for effective polycross size [abstract]. North American Alfalfa Improvement Conference. Paper No. 15.
Five cycles of selection for 2,4-D resistance in red clover - (Abstract Only)
Riday, H. 2014. Five cycles of selection for 2,4-D resistance in red clover [abstract]. North American Alfalfa Improvement Conference. p. 29.
Broadening the U.S. alfalfa germplasm base - (Abstract Only)
Riday, H., Smith, M.A. 2014. Broadening the U.S. alfalfa germplasm base [abstract]. North American Alfalfa Improvement Conference. p. 28.
Vigor and persistence of birdsfoot trefoil (Lotus corniculatus L.) populations selected with or without an orchardgrass (Dactylis glomerata L.) companion evaluated in grass sod - (Peer Reviewed Journal)
Riday, H., Brummer, C.E. 2014. Vigor and persistence of birdsfoot trefoil (Lotus corniculatus L.) populations selected with or without an orchardgrass (Dactylis glomerata L.) companion evaluated in grass sod. Crop Science. DOI:10.2135/cropsci2014.02.0147.
Yield, morphological characteristics, and chemical composition of European- and Mediterranean-derived birdsfoot trefoil cultivars grown in the colder continental United States - (Peer Reviewed Journal)
Grabber, J.H., Riday, H., Coblentz, W.K., Cassida, K., Griggs, T., Min, D., Macadam, J. 2014. Yield, morphological characteristics, and chemical composition of European- and Mediterranean-derived birdsfoot trefoil cultivars grown in the colder continental United States. Crop Science. 54: 1893-1901.
Growth environment, harvest management and germplasm impacts on potential ethanol and crude protein yield in alfalfa - (Peer Reviewed Journal)
Lamb, J.F., Jung, H.G., Riday, H. 2014. Growth environment, harvest management and germplasm impacts on potential ethanol and crude protein yield in alfalfa. Biomass and Bioenergy. 63:114-125.
Red clover - (Book / Chapter)
Isobe, S., Kölliker, R., Boller, B., Riday, H. 2013. Red clover. In: Cai, H., Yamada, T., Kole, C., editors. Genetics, Genomics and Breeding of Forage Crops. Boca Raton, FL:CRC Press. p. 220-249.
Paternity testing in an autotetraploid alfalfa breeding polycross - (Peer Reviewed Journal)
Riday, H., Johnson, D.W., Heyduk, K., Raasch, J.A., Darling, M.M., Sandman, J.E. 2013. Paternity testing in an autotetraploid alfalfa breeding polycross. Euphytica. Euphytica 194:335-349.
Molecular marker identified selfed progeny and their breeding implications in tetraploid alfalfa synthetics - (Abstract Only) - (31-Aug-12)
Marker assisted selection in forage breeding: a broadened vision - (Abstract Only) - (30-Aug-12)
Improvements in alfalfa subspecies falcata germplasms and their hybrid performance - (Abstract Only) - (30-Aug-12)
Impacts on potential ethanol and crude protein yield in alfalfa - (Abstract Only)
Lamb, J.F., Jung, H.G., Riday, H. 2012. Impacts on potential ethanol and crude protein yield in alfalfa[abstract]. 2012 Joint North American Alfalfa Improvement Conference, Trifolium, & Grass Breeders Conference, July 10-12, 2012, Ithaca, New York. Available: www.naaic.org/conf.files/P21-Lamb.pdf.
A novel red clover virus associated with root colonization by Olpidium sp. - (Abstract Only)
Samac, D.A., Lockhart, B., Riday, H. 2012. A novel red clover virus associated with root colonization by Olpidium sp. [abstract]. 2012 Joint North American Alfalfa Improvement Conference, Trifolium, & Grass Breeders Conference, July 10-12, 2012, Ithaca, New York. Available: http://www.naaic.org/Meetings/files/P32-Samac.pdf.
Harvest impacts on alfalfa stem neutral detergent fiber concentration and digestibility and cell wall concentration and composition Reprint Icon - (Peer Reviewed Journal)
Lamb, J.F., Jung, H.G., Riday, H. 2012. Harvest impacts on alfalfa stem neutral detergent fiber concentration and digestibility and cell wall concentration and composition. Crop Science. 52(5):2402-2412.
Molecular marker identified selfed progeny and their breeding implications in tetraploid alfalfa synthetics - (Proceedings) - (20-Apr-12)
Marker assisted selection made cheap and easy - (Book / Chapter) - (02-Apr-12)
Variability in the relationships for alfalfa stem 16- and 96-h in vitro neutral detergent fiber digestibility with composition due to maturity and harvest - (Abstract Only) - (30-Jun-11)
Paternity testing a non-linkage based marker assisted selection scheme for outbred forage species Reprint Icon - (Peer Reviewed Journal)
Riday, H. 2011. Paternity testing a non-linkage based marker assisted selection scheme for outbred forage species. Crop Science. 51:631-641.
Red Clover Breeding Progress - (Peer Reviewed Journal)
Riday, H. 2010. Red Clover Breeding Progress. Plant Breeding. 4:22-29.
Harvest management impacts on stem quality in alfalfa - (Abstract Only)
Lamb, J.F., Jung, H.G., Riday, H. 2010. Harvest management impacts on stem quality in alfalfa [abstract]. ASA-CSSA-SSSA 2010 International Annual Meetings, October 31-November 4, 2010, Long Beach, California. Abstract No. 293-10. Available: http://a-c-s.confex.com/crops/2010am/webprogram/Paper61327.html.
Paternity and Nested-within-Family Marker Assisted Selection in Space Planted Red Clover Nurseries - (Abstract Only) - (28-Jul-10)
Plant density and maturity stage impacts on stem cell wall composition in high quality and non-lodging alfalfa - (Abstract Only)
Lamb, J.F., Riday, H., Jung, H.G. 2010. Plant density and maturity stage impacts on stem cell wall composition in high quality and non-lodging alfalfa [abstract]. 42nd North American Alfalfa Improvement Conference & 21st Trifolium Conference, July 27-30, 2010, Boise, Idaho. Available: http://www.naaic.org/Meetings/National/2010meeting/Lamb.pdf.
Demonstrating Cost-Effective Marker Assisted Selection for Biomass Yield in Red Clover (Trifolium pratense L.) – Part 1: Paternity Testing - (Abstract Only) - (25-Jun-10)
Demonstrating Cost-Effective Marker Assisted Selection for Biomass Yield in Red Clover (Trifolium pratense L.) – Part 2: Nested Within-Family Linkage Based Selection - (Abstract Only) - (25-Jun-10)
Genetic Map-Based Location of the Red Clover (Trifolium pratense L.) Gametophytic Self-incompatibility Locus - (Peer Reviewed Journal)
Riday, H., Krohn, A. 2010. Genetic Map-Based Location of the Red Clover (Trifolium pratense L.) Gametophytic Self-incompatibility Locus. Theoretical and Applied Genetics. 121(4):761-767.
Paternity Testing, a Poor Man’s Marker Assisted Breeding Strategy to Increase Selection Gains in Outbred Forage Species - (Proceedings)
Riday, H. 2010. Paternity Testing, a Poor Man’s Marker Assisted Breeding Strategy to Increase Selection Gains in Outbred Forage Species. In: Proceedings of The 6th International Symposium of Molecular Breeding of Forage Turf, 15-19 March 2010, Buenos Aires, Argentina. p. 119.
Identification of SSR Markers Linked to the Gametophytic Self-Incompatibility Locus in Red Clover (Trifolium pratense) - (Proceedings)
Riday, H., Krohn, A.L. 2010. Identification of SSR Markers Linked to the Gametophytic Self-Incompatibility Locus in Red Clover (Trifolium pratense). In: Proceedings of the 6th International Symposium of Molecular Breeding of Forage Turf. p. 191.
Registration of Kura1 a Trifolium ambiguum (M. Bieb)germplasm - (Peer Reviewed Journal)
Riday, H., Albrecht, K.A. 2010. Registration of Kura1 a Trifolium ambiguum (M. Bieb)germplasm. Journal of Plant Registrations. 4:80-85.
Increasing Population Hybridity by Restricting Self-Incompatibility Alleles in Red Clover Populations - (Peer Reviewed Journal)
Riday, H., Krohn, A.L. 2010. Increasing Population Hybridity by Restricting Self-Incompatibility Alleles in Red Clover Populations. Crop Science. 50:853-860.
Progress report on reduced-lignin alfalfa: part 1, plant modifications - (Trade Journal)
Riday, H., Hatfield, R.D. 2009. Progress report on reduced-lignin alfalfa: part 1, plant modifications. Forage Focus. May. p. 2-3.
Correlations Between Visual Biomass Scores and Forage Yield in Space-Planted Red Clover (Trifolium pratense) Breeding Nurseries - (Peer Reviewed Journal)
Riday, H. 2009. Correlations Between Visual Biomass Scores and Forage Yield in Space-Planted Red Clover (Trifolium pratense) Breeding Nurseries. Euphytica. 170:339-345.
New Developments in Forage Varieties - (Proceedings)
Martin, N.P., Casler, M.D., Riday, H., Brink, G.E. 2009. New Developments in Forage Varieties. In: Proceedings of 2009 American Forage and Grassland Council Conference, June 21-23, 2009, Grand Rapids, Michigan. p. 6.
Using Near Infrared Spectroscopy to Rapidly Ascertain Seedling Establishment Potential in Red Clover Breeding Programs - (Abstract Only)
Riday, H. 2009. Using Near Infrared Spectroscopy to Rapidly Ascertain Seedling Establishment Potential in Red Clover Breeding Programs [abstract]. Presentation from the 2009 Annual Meeting in Morgantown, West Virginia. Available: http://www.umaine.edu/grazingguide/2009%20presentations.htm.
Restricting gametophytic self-incompatibility alleles in red clover (Trifolium pratense) to increase hybridity - (Abstract Only)
Riday, H. 2008. Restricting gametophytic self-incompatibility alleles in red clover (Trifolium pratense) to increase hybridity. Trifolium Conference Abstract & Proceedings. 41st North American Alfalfa Improvement Conference & 20th Trifolium Conference, June 1-4, 2008, Dallas, Texas. Poster Number 17.
Lignin and Fiber digestibility in Caffeic Acid 3-O-Methyltransferase and Caffeoyl CoA 3-O-Methyltransferase Downregulated Alfalfa - (Abstract Only)
Riday, H., Whalen, D., Bouton, J., Mertens, D.R., Jung, H.G., Chen, F., Temple, S., McCaslin, M., Dixon, R. 2008. Lignin and Fiber digestibility in Caffeic Acid 3-O-Methyltransferase and Caffeoyl CoA 3-O-Methyltransferase Downregulated Alfalfa [abstract]. Proceedings Joint Meeting of the 41st North American Alfalfa Improvement Conference & 20th Trifolium Conference, June 1-4, 2008, Dallas, TX. Abstract #18.
Response to selection under controlled environment versus natural selection in diverse regions across Canada - (Abstract Only)
Papadopoulos, Y.A., Michaud, R., Bertrand, A., Coulman, B., Acharya, S.N., Bittman, S., Riday, H., Viands, D., Boe, A., Mcrae, K., Castonguay, Y. 2008. Response to selection under controlled environment versus natural selection in diverse regions across Canada. Trifolium Conference Abstract & Proceedings. Available://www.naaic.org/Meetings/National/2008meeting/proceedings/proceedings2008.htm
Sativa by falcata alfalfa hybrid variety trials - (Abstract Only)
Riday, H., Wager, S., Viands, D.R., Lamb, J.F., Meyer, D., Smith, M., Brummer, C.E., Boe, A. 2008. Sativa by falcata alfalfa hybrid variety trials. Proceedings of the Joint Meeting of the 41st North American Alfalfa Improvement Conference & 20th Trifolium Conference. Paper No. 19.
Research Investment in "Other" Forage Legumes - (Abstract Only) - (13-May-08)
Increasing Hybridity via Control of the Gametophytic Self-incompatiblity System in Red Clover (Trifolium pratense) - (Abstract Only)
Knack, J.J., Krohn, A.L., Riday, H. Increasing Hybridity via Control of the Gametophytic Self-incompatiblity System in Red Clover (Trifolium pratense). Introductory Biology 151 and 152 Mentored Poster Session Spring 2008, May 6, 2008, Great Hall, Memorial Union, University of Wisconsin-Madison. Poster 222.
Breeding for increased persistence in pasture legumes - (Trade Journal)
Riday, H. 2008. Breeding for increased persistence in pasture legumes. Forage Focus Magazine, Midwest Forage Association. March, 2008. p 3-4.
Wisconsin - Increased corn silage protein with intercropped lablab bean - (Trade Journal)
Armstrong, K.L., Albrecht, K.A., Lauer, J.G., Riday, H. 2008. Wisconsin - Increased corn silage protein with intercropped lablab bean. Forage Focus. March, 2008. p 24.
Intercropping Tropical Vine Legumes and Maize for Silage in Temperate Climates - (Peer Reviewed Journal)
Riday, H., Albrecht, K. 2008. Intercropping Tropical Vine Legumes and Maize for Silage in Temperate Climates. Journal of Sustainable Agriculture. 32:425-438.
Forage breeding and new varieties - (Abstract Only)
Papadopolous, Y.A., Coulman, B., Michaud, R., Acharva, S.N., Bittman, S., Viands, D., Riday, H., Boe, A., Phillips, T., Casler, M.D. 2007. Forage breeding and new varieties. In: Proceedings of ForageFest 2007 Sustainable Forage Production From Field to Bunk, Abbotsford Soil Conservation Association, Abbotsford BC. December 4, 2007. Paper Number 3.
Forage Breeding and New Varieties - (Abstract Only)
Papadopolous, Y.A., Coulman, B., Michaud, R., Acharva, S.N., Bittman, S., Viands, D., Riday, H., Boe, A., Phillips, T., Casler, M.D. 2008. Forage Breeding and New Varieties. Proceedings of ‘the 41h biennial Atlantic Agronomy Workshop’ (invited presentation). Organized by Canadian Society of Agronomy at the Rodd Charlottetown Hotel, Charlottetown, PEI; January 15 -16, 2008.
Forage Breeding and New Varieties Reprint Icon - (Abstract Only)
Papadopolous, Y.A., Coulman, B., Michaud, R., Archarva, S.N., Bittman, S., Viands, D., Riday, H., Boe, A., Phillips, T., Casler, M.D. 2008. Forage Breeding and New Varieties [abstract]. Canadian Journal of Plant Science. 88:732.
Marker Assisted Selection in Legumes Reprint Icon - (Abstract Only)
Riday, H. 2007. Marker Assisted Selection in Legumes. In: Proceedings of International Workshop - Integrating Genomics into Plant Breeding, October 25-26, 2007, Porto Alegre, Brazil. Lotus Newsletter. 37(3):102.
Heritability of frost-seeded red clover establishment - (Peer Reviewed Journal)
Riday, H. 2007. Heritability of frost-seeded red clover establishment. Euphytica. 163:81-87.
Alfalfa subsp. sativa by falcata intersubspecific semi-hybrid seed production using alfalfa leafcutter bees - (Peer Reviewed Journal)
Riday, H. 2008. Alfalfa subsp. sativa by falcata intersubspecific semi-hybrid seed production using alfalfa leafcutter bees. Journal of New Seeds. 9(1):19-31.
Registration of Two Improved Yellow-flowered Alfalfa Germplasms Reprint Icon - (Peer Reviewed Journal)
Riday, H., Brummer, E.C. 2007. Registration of Two Improved Yellow-flowered Alfalfa Germplasms. Journal of Plant Registrations. 1:131-133.
Intercropping Corn with Lablab bean, Velvet Bean, and Scarlet Runner Bean for Forage Reprint Icon - (Peer Reviewed Journal)
Armstrong, K.L., Albrecht, K.A., Lauer, J.G., Riday, H. 2008. Intercropping Corn with Lablab bean, Velvet Bean, and Scarlet Runner Bean for Forage. Crop Science. 48:371-379.
Physical analysis of COMT and CCOMT downregulated alfalfa stems - (Abstract Only)
Riday, H., Whatlen, D., Bouton, J., Temple, S., Mccaslin, M., Dixon, R. 2007. Physical analysis of COMT and CCOMT downregulated alfalfa stems [abstract]. International Symposium of Molecular Breeding of Forage Turf. p. 60.
Iafal-C3, Medicago Sativa Subsp. Falcata Germplasm - (Germplasm Release)
Riday, H., and Brummer, E. C. 2007. IAFAL-C3. Medicago sativa subsp. falcata germplasm. United States Department of Agriculture, Agricultural Research Service, Washington, D.C. and Iowa State University, Ames, IA. PI 644249. [released 4/12/2007].
Persistence of Grazed Red Clover Varieties - (Experiment Station)
Riday, H., Casler, M.D., Crooks, A., Wood, T. 2007. Persistence of Grazed Red Clover Varieties. Grass Clippings. 2(1):3-8
Narrow Sense Heritability and Additive Genetic Correlations in Alfalfa - (Peer Reviewed Journal)
Riday, H., Brummer, C.E. 2004. Narrow Sense Heritability and Additive Genetic Correlations in Alfalfa. Journal of the Iowa Academy of Science. 114 (1,4):28-34.
Kura1 - Trifolium ambiguum germplasm - (Germplasm Release)
Albrecht, K., Riday, H. 2006. Kura1 - Trifolium ambiguum germplasm. Germplasm Release. United States Department of Agriculture, Agricultural Research Service, Washington, D.C. and University of Wisconsin Experiment Station, University of Wisconsin-Madison, Madison, WI. National Plant Germplasm System PI 643168, NSSL 447681.01. [released 12/8/2006].
Optimizing Sativa and Falcata Alfalfa Subspecies Ratios for Leafcutter Bee Pollination to Maximize Hybrid Seed Ratios - (Abstract Only)
Riday, H. 2006. Optimizing Sativa and Falcata Alfalfa Subspecies Ratios for Leafcutter Bee Pollination to Maximize Hybrid Seed Ratios. Proceedings of the ASA-CSSA-SSSA International Annual Meeting, November 12-16, 2006 in Indianapolis, Indiana. 2006 CDROM.
Organic vs. conventional fodder crops in the USA: A challenge for breeders? - (Proceedings)
Casler, M.D., Riday, H., Undersander, D. 2007. Organic vs. conventional fodder crops in the USA: A challenge for breeders? Proceedings of the EUCARPIA Fodder Crops Meetings. p.17-23.
Agronomic field evaluation of caffeic acid 3-O-methyltransferase and caffeoyl CoA 3-O-methyltransferase downregulated alfalfas - (Abstract Only)
Riday, H., Whalen, D.F., Bouton, J., Temple, S.J., Mccaslin, M., Dixon, R.A. 2006. Agronomic field evaluation of caffeic acid 3-O-methyltransferase and caffeoyl CoA 3-O-methyltransferase downregulated alfalfas. In: Proceedings of the 40th North American Alfalfa Improvement Conference and 19th Trifolum Conference, July 16-19, 2006, Minneapolis, Minnesota. Available at www.naaic.org/Meetings/National/2006meeting/procedings/Riday.PDF.
Persistence of rotationally grazed red clover in mixed stands. - (Abstract Only)
Riday, H., Casler, M.D. 2006. Persistence of rotationally grazed red clover in mixed stands. In: Proceedings of the 40th North American Alfalfa Improvement Conference and 19th Trifolium Conference, July 16-19, Minneapolis, Minnsota. Available at www.naaic.org/Meetings/National/2006meeting/procedings/Riday(poster).PDF.
Breeding for Improved Frost-Seeded Red Clover Seedling Establishment - (Proceedings)
Riday, H. 2006. Breeding for improved frost-seeded red clover seedling establishment. In: Mercer, C.F., editor. Proceedings of Advances in pasture plant breeding, April 18-21, 2006, Christchurch, New Zealand. p. 141-144.
Persistence and Yield Stability of Intersubspecific Alfalfa Hybrids - (Peer Reviewed Journal)
Riday, H., Brummer, C.E. 2006. Persistence and yield stability of intersubspecific alfalfa hybrids. Crop Science. 46:1058-1063.
Biomass Yield Stability in Alfalfa - (Peer Reviewed Journal)
Robins, J.G., Riday, H., Helland, S.J., Brummer, E.C. 2006. Biomass yield stability in alfalfa. Iowa Academy of Science 111:71-75
Maize Tropical Vine Legume Intercropping for Silage in Temperate Climates - (Abstract Only)
Riday, H. 2005. Maize tropical vine legume intercropping for silage in temperate climates [abstract]. In: ASA-CSSA-SSSA International Annual Meeting. Paper No. 67-1.
Nutritional Improvement of Corn for Silage by Intercropping with Climbing Beans - (Abstract Only)
Armstrong, K., Albrecht, K., Lauer, J., Riday, H. 2005. Nutritional improvement of corn for silage by intercropping with climbing beans [abstract]. ASA-CSSA-SSSA International Annual Meeting. Paper No. 68-437b.
Intercropping Climbing Beans with Corn for Silage - (Abstract Only)
Armstrong, K., Albrecht, K., Lauer, J., Riday, H. 2005. Intercropping climbing beans with corn for silage. American Forage and Grassland Council Conference Proceedings. 2005 CDROM.
Tropical Vine Legume-Maize Mixtures for Enhanced Silage in Temperate Climates - (Proceedings)
Riday, H. 2005. Tropical vine legume-maize mixtures for enhanced silage in temperate climates. Proceedings of International Symposium of Molecular Breeding of Forage Turf. p. 123.
Relationships among Biomass Yield Components Within and Between Subspecies of Alfalfa - (Other)
Riday, H., Brummer, C. 2004. Relationships among biomass yield components within and between subspecies of alfalfa. Available: http://www.medicago-reports.org/pdfs/Riday_Brummer_falcata.pdf.
Biomass Yield Stability in Alfalfa - (Peer Reviewed Journal)
Robins, J.G., Riday, H., Helland, S.J., Brummer, C.E. 2006. Biomass yield stability in alfalfa. Iowa Academy of Science. 111(3,4):71-75.
Performance of Intersubspecific Alfalfa Hybrids in Sward Versus Space Planted Plots - (Peer Reviewed Journal)
Riday, H., Brummer, C.E. 2004. Performance of intersubspecific alfalfa hybrids in sward versus space planted plots. Euphytica. 138:107-0112.
Morphological Variation of Medicago Sativa Subsp. Falcata Genotypes and Their Hybrid Progeny - (Peer Reviewed Journal)
Riday, H., Brummer, C.E. 2004. Morphological variation of medicago sativa subsp. falcata genotypes and their hybrid progeny. Euphytica.138:1-12.
Heterosis in a Broad Range of Alfalfa Germplasm - (Peer Reviewed Journal)
Riday, H., Brummer, C.E. 2005. Heterosis in a broad range of alfalfa germplasm. Crop Science. 45:8-17.
Last Modified: 7/28/2014
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