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United States Department of Agriculture

Agricultural Research Service

Related Topics

Richard T Olsen
Floral and Nursery Plants Research Unit
RESEARCH GENETICIST (PLANTS)

Phone: (301) 504-5657
Fax: (301) 504-5096
Room 128
10300 BALTIMORE AVENUE
BLDG 010A BARC-WEST
BELTSVILLE, MD, 20705-2350

Projects
Management and Evaluation of Woody Landscape Plant Germplasm Resources and Associated Information
Appropriated (D)
  Accession Number: 424481
Evaluation and Genetic Improvement of Woody Ornamental Landscape Plants for Disease and Pest Tolerance, Non-Invasiveness, and Ornamental Traits
Appropriated (D)
  Accession Number: 425048
Evaluation of Cotoneaster spp.: Landscape Performance, Fire Blight Resistance, and Ploidy Levels
Specific Cooperative Agreement (S)
  Accession Number: 425626
Genetic Structure of Green Ash and the Establishment of Ex Situ Conservation
Specific Cooperative Agreement (S)
  Accession Number: 421949
Developing Blight-Resistant Boxwood Germplasm
Specific Cooperative Agreement (S)
  Accession Number: 423742

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Asian germplasm in American horticulture: new thoughts on an old theme - (Peer Reviewed Journal)
Olsen, R.T. 2014. Asian germplasm in American horticulture: new thoughts on an old theme. HortScience. 48:1073-1077.
In vitro induction of polyploidy in Cercis glabra Pamp - (Peer Reviewed Journal)
Nadler, J.D., Pooler, M.R., Olsen, R.T., Coleman, G. 2012. In vitro induction of polyploidy in Cercis glabra Pamp. Scientia Horticulturae. 148:126-130.
Plant breeding for harmony between agriculture and the environment - (Peer Reviewed Journal)
Brummer, E., Barber, W.T., Collier, S., Cox, T.S., Johnson, R., Murray, S., Olsen, R.T., Pratt, R., Thro, A. 2012. Plant breeding for harmony between agriculture and the environment. Frontiers in Ecology and the Environment. 9:561-568.
Neotypification of Catalpa speciosa (Bignonioides) - (Peer Reviewed Journal)
Kirkbride, J.H., Olsen, R.T. 2011. Neotypification of Catalpa speciosa (Bignonioides). Taxon. 60(6):1760-1763.
Identity of Catalpa tibetica (Bignoniaceae) - (Peer Reviewed Journal)
Kirkbride, J.H., Olsen, R.T. 2011. Identity of Catalpa tibetica (Bignoniaceae). Journal of Botanical Research Institute of Texas. 5(2):625-631.
Ulmus americana is a polyploid complex - (Peer Reviewed Journal)
Whittemore, A.T., Olsen, R.T. 2011. Ulmus americana is a polyploid complex. Journal of Botanical Research Institute of Texas. 98(4):754-760.
Mycosphaerella nyssicola revisited: characterization of a species distinct from M. punctiformis - (Peer Reviewed Journal)
Minnis, A., Rossman, A.Y., Olsen, R.T. 2011. Mycosphaerella nyssicola revisited: characterization of a species distinct from M. punctiformis. Mycotaxon. 155:311-322.
Sphaerographium nyssicola Minnis, Rossman & D.F. Farr, sp. nov. - (Peer Reviewed Journal)
Minnis, A., Rossman, A.Y., Farr, D., Olsen, R.T. 2010. Sphaerographium nyssicola Minnis, Rossman & D.F. Farr, sp. nov. Persoonia: Molecular Phylogeny and Evolution of Fungi. 25:122-123.
Development of simple sequence repeat markers for Chionanthus retusus (Oleaceae) and effective discrimination of closely related taxa - (Peer Reviewed Journal)
Arias, R.S., Techen, N., Rinehart, T.A., Olsen, R.T., Kirkbride, J.H., Scheffler, B.E. 2010. Development of simple sequence repeat markers for Chionanthus retusus (Oleaceae) and effective discrimination of closely related taxa. HortScience. 46(1):23-29.
Evaluating fertility of triploid clones of hypericum androsaemum L. for use as non-invasive landscape plants - (Peer Reviewed Journal)
Trueblood, C.E., Ranney, T.G., Lynch, N.P., Neal, J.C., Olsen, R.T. 2010. Evaluating fertility of triploid clones of hypericum androsaemum L. for use as non-invasive landscape plants. HortScience. 45:1026-1028.
Validation of the hybrid flowering cherry Prunus xincam Ingram (Rosaceae) Reprint Icon - (Peer Reviewed Journal)
Olsen, R.T. and Whittemore, A.T. 2009. Validation of the hybrid flowering cherry Prunus xincam (Rosaceae). Novon. 19:490-493.
Development of SSR markers for Chionanthus retusus (Oleaceae) and effective discrimination of closely related taxa - (Other)
Arias, R.S., Techen, N., Rinehart, T.A., Olsen, R.T., Kirkbride, J.H., Scheffler, B.E. 2009. Development of SSR markers for Chionanthus retusus (Oleaceae) and effective discrimination of closely related taxa. American Society of Horticulture Science Meeting, July 24-28, 2008, St. Louis, MO. meeting Prodeedings. 44(4):1007.
Evaluation of flowering cherry (Prunus L.) species, hybrids, and cultivars using SSR markers Reprint Icon - (Peer Reviewed Journal)
Ma, H., Olsen, R., Pooler, M, Kramer, Matthew. 2009. Evaluation of Flowering Cherry Species, Hybrids, and Cultivars Using Simple Sequence Repeat Markers. Journal of the American Society for Horticultural Science. 134:435-444.
Evaluation of Hemlock (Tsuga)Species and Hybrids for Resistance to Adelges tsugae (Hemiptera:Adelgidae) Using Artificial Infestation - (Peer Reviewed Journal)
Montgomery, M.E., Bentz, S.E., Olsen, R.T. 2009. Evaluation of hemlock (Tsuga) species and hybrids for resistance to Adelges tsugae (Hemiptera: Adelgidae) using artificial inoculation. Journal of Economic Entomology. 102:1247-1254.
Evaluation of a 15-year-old Carolina silverbell provenance trial - (Proceedings)
Olsen, R.T. 2009. Evaluation of a 15-year-old Carolina silverbell provenance trial. Proceedings of the 53rd Annual Southern Nursery Association Research Conference. 53:181-185.
Gene banks offer breeders access to germplasm: Germplasm collections help to preserve genetic diversity - (Trade Journal)
Robbins, J., Widrlechner, M.P., Olsen, R.T., Reed, S.M., Meerow, A.W., Hummer, K.E., Bretting, P.K., Allenstein, P., Krautmann, M. 2008. Gene banks offer breeders access to germplasm: Germplasm collections help to preserve genetic diversity. Nursery Management and Production. 24(5):53-58.
Resistance of Hemlock species and hybrids to Hemlock woolly Adelgid - (Abstract Only)
Bentz, S.E., Montgomery, M.E., Olsen, R.T. 2008. Resistance of hemlock species and hybrids to hemlock woolly adelgid. Fouth Symposium on Hemlock Woolly Adelgid in the Eastern United States, 12-14 February 2008.
Prunus x sieboldii - (Trade Journal)
Olsen, R.T., 2008. Prunus x Sieboldii. 2008. American Journeyman. vol 207-66.
Polypoid Breeding in Hypericum Androsaemum L - (Abstract Only)
Olsen, R.T., and Ranney, T.G. 2006. Polyploid breeding in Hypericum androsaemum L. HortScience. 41:952.
ARS News Articles
Last Modified: 12/24/2014