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Research Leader (Vacant)
Harvey Blackburn (Lead)
David Ellis (Lead)
Maria Jenderek
Phillip Purdy
Chris Richards
Gayle Volk
Christina Walters (Lead)
 

Christopher Richards
National Center for Genetic Resources Preservation
Research Geneticist (Plants)

Phone: (970) 495-3201
USDA,REE,ARS,NPA
1111 SOUTH MASON STREET
FORT COLLINS, CO, 80521-4500

Projects
RESEARCH TO DEVELOP STRATEGIES AND TECHNOLOGIES FOR PRESERVING PLANT GENETIC DIVERSITY IN EX SITU GENEBANKS
Appropriated (D)
  Accession Number: 414258
GENETIC DIVERSITY OF WILD APPLE ACCESSIONS IN THE NATIONAL PLANT GERMPLASM SYSTEM
Reimbursable (R)
  Accession Number: 409504
MECHANISMS OF GENETIC CHANGE DURING EX SITU CONSERVATION OF RYE GERMPLASM
Specific Cooperative Agreement (S)
  Accession Number: 408381
ASSESSMENT GENETIC EROSION IN FUNCTIONAL DIVERSITY IN BRASSICA GERMPLASM COLLECTIONS
Specific Cooperative Agreement (S)
  Accession Number: 414680

Publications
Diversity of wild Malus germplasm available in the USDA-ARS National Plant Germplasm System - (Abstract)
Volk, G.M., C.M. Richards, Aldwinckle, H.2008. Diversity of wild Malus germplasm available in the USDA-ARS National Plant Germplasm System. American Society for Horticultural Science. Annual Conference. July 21-24, 2008. Orlando, FL. 43:1136. Meeting Abstract.
Genetic diversity and population structure in Malus sieversii, a wild progenitor species of domesticated apple. - (Peer Reviewed Journal) - (26-Aug-08)
The influence of large scale genomics and the changing role of ex situ collections - (Abstract)
Richards, C.M. 2008. The influence of large scale genomics and the changing role of ex situ collections. Annual meeting for the American Botanical Society, Vancouver, British Columbia, Canada. July 27, 2008. Meeting Abstract.
Expansion of the USDA-ARS Germplasm Resources Information Network (GRIN) database to accommodate molecular data - (Abstract)
Volk, G.M., Richards C.M., Bohning M.A., Sinnott Q.P. 2008. Expansion of the USDA-ARS Germplasm Resources Information Network (GRIN) database to accommodate molecular data. American Society for Horticultural Science. Annual Conference. July 21-24. Orlando, Florida 43:1205-1206. Meeting Abstract.
Genebanks in the post-genomic age: emerging roles and anticipated uses - (Peer Reviewed Journal)
Walters, C.T., Volk, G.M., Richards, C.M. 2008. Genebanks in the post-genomic age: emerging roles and anticipated uses. Biodiversity Issues 9:68-71.
Population Genetics in ex situ Conservation - (Proceedings/Symposium)
RRichards, C.M. 2008. Population Genetics in ex situ Conservation. Leibnitz Institute of Plant Genetic and Crop Research (IPK). April 23, 2008,Gatersleben, Germany. Meeting Abstract.
Availability of genotypic data for USDA-ARS National Plant Germplasm System accessions using the Genetic Resources Information Network (GRIN) database - (Peer Reviewed Journal)
Volk, G.M., Richards, C.M. 2008. Availability of genotypic data for USDA-ARS National Plant Germplasm System accessions using the Genetic Resources Information Network (GRIN) database. HortScience 43:1365-1366.
Assessment of the genetic diversity and disease resistance of wild Malus orientalis seedlings from Turkey and Southern Russia - (Abstract)
Volk, G.M., C.M. Richards P. Forsline and H. Aldwinckle. 2008. Assessment of the genetic diversity and disease resistance of wild Malus orientalis seedlings from Turkey and Southern Russia. Rosaceae Genomics Conference. Annual Conference. March 16-19, 2008. Pucon, Chile. pp. 85. Meeting Abstract.
Genetic diversity and disease resistance of wild Malus orientalis from Turkey and southern Russia - (Peer Reviewed Journal)
Volk, G.M., Richards, C.M., Reilley, A., Henk, A.D., Reeves, P.A., Forsline, P.L., Aldwinckle, H. 2008. Genetic diversity and disease resistance of wild Malus orientalis from Turkey and southern Russia. Journal of the American Society for Horticultural Science 133:383-389.
Genetic diversity of wild Malus orientalis - (Abstract)
Volk, G.M., Richards, C.M., Henk, A.D., Reilley, A., Reeves, P.A., Forsline, P.L. 2007. Genetic diversity of wild Malus orientalis. Plant & Animal Genome XVI Conference. Annual Conference. January 12-16, 2008. San Diego, CA. pp. 137. Meeting Abstract.
Progress in evaluating Malus sieversii for Disease-Resistance and Horticultural Traits - (Proceedings/Symposium) - (06-Nov-07)
Genetic Diversity of the Malus sieversii Collection in the USDA-ARS National Plant Germplasm System - (Abstract)
Volk, G.M., Richards, C.M., Henk, A.D., Reilley, A., Forsline, P.L. 2007. Genetic Diversity of the Malus sieversii Collection in the USDA-ARS National Plant Germplasm System. Meeting Abstract HortScience. July 16-19, 2007, Scottsdale, Arazona. 44:895.
Evolutionary conservation of the FLC mediated vernalization response - (Abstract)
Richards, C.M., Reeves, P.A., He, Y., Schmitz, R.J., Amasino, R.M., Panella, L.W. 2007. Evolutionary conservation of the FLC mediated vernalization response. Meeting Abstract for the Plant and Animal Genome XV conference. January 13-17, 2007, San Diego, California. pp. 129.
Virus induced gene silencing of a gene repressing flowering in sugar beet. - (Abstract)
Fenwick, A., Larson, R.L., Reeves, P.A., Richards, C.M., Panella, L.W. 2007. Virus induced gene silencing of a gene repressing flowering in sugar beet. American Society of Sugarbeet Technologists.
Evolutionary Conservation of the Flowering Locus C-Mediated Vernalization Response: Evidence From the Sugar Beet (Beta vulgaris) - (Peer Reviewed Journal)
Reeves, P.A., Yuehui, H., Schmitz, R.J., Amasino, R.M., Panella, L.W., Richards, C.M. 2006. Evolutionary Conservation of the Flowering Locus C-Mediated Vernalization Response: Evidence From the Sugar Beet (Beta vulgaris). Genetics 176: 295-307 (May 2007) DOI: 10.1534/genetics.106.069336.
GENETIC RELATIONSHIPS BETWEEN FERAL CATTLE FROM CHIRIKOF ISLAND, ALASKA, AND OTHER BREEDS - (Peer Reviewed Journal)
MacNeil, M.D., Cronin, M.A., Blackburn, H.D., Richards, C.M., Lockwood, D.R., Kantanen, J., Alexander, L.J. 2007. Genetic relationships between feral cattle from Chirikof Island, Alaska, and other breeds. Animal Genetics 38:193-197.
Genetic diversity and structure in the rare Colorado endemic plant Physaria bellii Mulligan (Brassicaceae) - (Peer Reviewed Journal)
Kothera, L., Richards, C.M., Carney, S.E. 2007. Genetic diversity and structure in the rare Colorado endemic plant Physaria bellii Mulligan (Brassicaceae). Conservation Genetics 8:1043-1050.
Genetic diversity assessment of wild Malus sieversii populations in Kazakhstan - (Abstract)
Volk, G.M., C.M. Richards, A. Henk, A. Reilley and P. Forsline. 2007. Genetic diversity assessment of wild Malus sieversii populations in Kazakhstan. Meeting Abstract for the Plant and Animal Genome Conference. January 13-18, 2007, San Diego, California. pp. 133.
PROBABILISTIC MODELS FOR COLLECTING GENETIC DIVERSITY: COMPARISONS, CAVEATS AND LIMITATIONS - (Peer Reviewed Journal)
Lockwood, D., Richards, C.M., Volk, G.M. Probabilistic models for collecting genetic diversity: comparisons, caveats and limitations. Crop Science 47:859-866.
DISTINGUISHING TERMINAL MONOPHYLETIC GROUPS FROM HYBRID TAXA: PERFORMANCE OF CLADISTIC AND PHENETIC PROCEDURES - (Peer Reviewed Journal)
Reeves, P.A., Richards, C.M. 2007. Distinguishing terminal monophyletic groups from hybrid taxa: performance of cladistic and phenetic procedures. Systematic Biology 56:302-320.
GENETIC DIVERSITY OF WILD PYRUS COMMUNIS L. - (Abstract)
Volk, G.M., Richards, C.M., Henk, A.D., Reilley, A., Bassil, N.V., Postman, J.D. 2006. Genetic diversity of wild pyrus communis l. American Society of Horticulture Science Meeting. July 26-29, 2006, New Orleans, Louisiana. 41: 1035. Meeting Abstract.
Capturing genetic diversity of wild populations for ex situ conservation: Texas wild rice (Zizania texana) as a model - (Peer Reviewed Journal)
Richards, C.M., Antolin, M.F., Reilley, A., Poole, J., Walters, C.T. Capturing genetic diversity of wild populations for ex situ conservation: Texas wild rice (Zizania texana) as a model. Genetic Resources and Crop Evolution 54:837-848.
THE UTILITY OF AGED SEEDS IN DNA BANKS - (Peer Reviewed Journal)
Walters, C., A.A. Reilley, P.A. Reeves, J. Baszczak, and C.M. Richards. 2006. The utility of aged seeds in DNA banks. Seed Science Research 16:169-178.
CHARACTERIZATION OF WILD MALUS POPULATIONS USING GENOTYPIC AND PHENOTYPIC TRAITS - (Abstract)
Volk, G.M., Richards, C.M., Forsline, P.L. 2006. Characterization of wild malus populations using genotypic and phenotypic traits. Meeting Abstract. 3rd International Rosaceae Genomics Conference. Pg. 34.
CHARACTERIZATION OF WILD MALUS POPULATIONS USING GENOTYPIC AND PHENOTYPIC TRAITS - (Abstract)
Volk, G.M., C.M. Richards and P.L. Forsline. 2005. Characterization of wild malus populations using genotypic and phenotypic traits. 3rd International Rosaceae Genomics Conference. March 19-22, 2006, Napier, New Zealand. p. 34. Meeting Abstract.
WILD PLANT SAMPLING STRATEGIES: THE ROLES OF ECOLOGY AND EVOLUTION - (Review Article)
Lockwood, D.R., C.M. Richards and G.M. Volk. 2007. Wild plant sampling strategies: the roles of ecology and evolution. Plant Breeding Reviews 29:285-313.
DIVERSITY OF WILD PYRUS COMMUNIS BASED ON MICROSATELLITE ANALYSES - (Peer Reviewed Journal)
Volk, G.M., Richards, C.M., Henk, A.D., Reilley, A., Bassil, N.V., Postman, J.D. 2006. Diversity of wild pyrus communis based on microsatellite analyses. Journal of the American Society for Horticultural Science. Vol. 131:408-417.
PATTERNS OF MOLECULAR AND QUANTITATIVE TRAIT VARIATION IN MALUS SIEVERSII FROM KAZAKHSTAN - (Abstract)
Richards, C.M., Henk, A.D., Reilley, A., Forsline, P.L., Volk, G.M. 2006. Patterns of molecular and quantitative trait variation in Malus sieversii from kazakhstan. Meeting Proceedings of the Plant and Animal Genome XIV, January 13-18, 2006, San Diego, CA.
USDA-CSREES-NRI PROJECTS DEVELOPING GENOMIC RESOURCES FOR THE ROSACEAE (MALUS) - (Abstract)
Norelli, J.L., Korban, S., Volk, G.M., Zeng, Z., Aldwinckle, H., Bassett, C.L., Beever, J., Farrell, R., Gasic, K., Richards, C.M. 2006. USDA-CSREES-NRI projects developing genomic resources for the rosaceae (malus). Meeting Proceedings of the Plant and Animal Genome XIV, January 13-18, 2006, San Diego, CA. p. 37.
RELATIVE EFFECTS OF NOCTURNAL VS DIURNAL POLLINATORS AND DISTANCE ON GENE FLOW IN SMALL SILENE ALBA POPULATIONS - (Peer Reviewed Journal)
Barthelmess, E.L., Richards, C.M., McCauley, D.E. 2005. Relative effects of nocturnal vs diurnal pollinators and distance on gene flow in small silene alba populations. New Phytologist 169:689-698
POPULATION AND ECOLOGICAL GENETICS IN RESTORATION ECOLOGY - (Book/Chapter)
Falk, D., C. Richards, A. Montalvo, E. Knapp. 2006. Population and ecological genetics in restoration ecology. pp. 14-41. In D. Falk, M. Palmer and J.Zedler (eds) Foundations of Restoration Biology. Island Press, Washington, D.C.
EX SITU CONSERVATION OF VEGETATIVELY-PROPAGATED SPECIES: DEVELOPMENT OF A SEED-BASED CORE COLLECTION FOR MALUS SIEVERSII - (Peer Reviewed Journal)
Volk, G.M., A. Reilley, A.D. Henk, P.L. Forsline, H.S. Aldwinckle, and C.M. Richards. 2005. Ex situ conservation of vegetatively-propagated species: development of a seed-based core collection for Malus sieversii. Journal of the American Society of Horticultural Science. 130:203-210.
MOLECULAR TECHNOLOGIES FOR THE MANAGEMENT AND USE OF GENE BANK COLLECTIONS - (Research Notes)
Richards, C.M. 2004. Molecular technologies for the management and use of gene bank collections. In M.C. de Vicente (ed.) The Evolving Role of Genebanks in the Fast-Developing Field of Molecular Genetics. Issues in Genetic Resources 11:13-18. International Plant Genetic Resources Institute. Rome, Italy.
WOLFPAC: BUILDING A HIGH-PERFORMANCE DISTRIBUTED COMPUTING NETWORK FOR PHYLOGENETIC ANALYSIS USING "OBSOLETE" COMPUTATIONAL RESOURCES - (Peer Reviewed Journal)
Reeves, P.A., Friedman, P.H., Richards, C.M. 2005. Wolfpac: Building a high-preformance distributed computing network for phylogenetic analysis using "obsolete" computational resources. Applied Bioinformatics 4:61-64.
MICROSATELLITE PRIMERS FOR TEXAS WILD RICE AND A PRELIMINARY TEST OF THE IMPACT OF CRYOGENIC STORAGE ON ALLELE FREQUENCY AT THESE LOCI. - (Peer Reviewed Journal)
Richards C.M., A. Reilley, D.H. Touchell, M.F. Antolin and C. Walters. Microsatellite primers for Texas wild rice (Zizania texana), and a preliminary test of the impact of cryogenic storage on allele frequency at these loci. Conservation Genetics 5:853-859.
HOW MANY GARLICS ARE THERE? - (Trade Journal)
Volk, G.M., A.D. Henk and C.M. Richards. 2004. How many garlics are there? The Garlic Press 44:5-8.
GENETIC DIVERSITY AMONG US GARLIC CLONES AS DETECTED USING AFLP METHODS - (Peer Reviewed Journal)
Volk, G.M., A.D. Henk and C.M. Richards. 2004. Genetic Diversity among US garlic clones as detected using AFLP methods. Journal of the American Society for Horticultural Science 129(4):559-569.
POLYMORPHIC MICROSATELLITE MARKERS FOR INFERRING DIVERSITY IN WILD AND DOMESTICATED SUGAR BEET (BETA VULGARIS) - (Peer Reviewed Journal)
Richards, C.M., M. Brownson, S. Mitchell, S. Kresovich and L. Panella. 2004. Polymorphic microsatellite markers for inferring diversity in wild and domesticated sugar beet (Beta vulgaris). Molecular Ecology Notes 4:243-245.
GENETIC STRUCTURE AND PATTERNS OF SELECTION IN NATURAL POPULATIONS OF BETA VULGARIS SSP. MARITIMA. - (Abstract)
Richards, C.M., Reeves, P.A., Fenwick, A.L., Panella, L.W. 2004. Genetic structure and patterns of selection in natural populations of beta vulgaris ssp. maritima.. Plant and Animal Genome XI Conference. San Diego, California. pp.136.
DIVERSITY OF GARLIC ACCESSIONS WITHIN THE NATIONAL PLANT GERMPLASM SYSTEM - (Abstract)
Volk, G.M., Henk, A.D., Richards, C.M. 2003. Diversity of garlic accessions within the national plant germplasm system. HortScience. 2003. 38:736.
GENETIC AND DEMOGRAPHIC DYNAMICS OF SMALL POPULATIONS OF SILENE ALBA - (Peer Reviewed Journal)
RICHARDS, C.M., EMERY, S.N., MCCAULEY, D.E. GENETIC AND DEMOGRAPHIC DYNAMICS OF SMALL POPULATIONS OF SILENE ALBA. HEREDITY. 2003. v.90.p.181-186.
MAINTENANCE OF GENETIC VARIABILITY IN A CRYOPRESERVED POPULATION OF ZIZANIA TEXANA EMBRYOS - (Abstract)
Richards, C.M., M. Antolin, and C. Walters. 2002. Maintenance of genetic variability in a cryopreserved population of Zizana texana embryos. 39th Meeting of the Society for Cryobiology, July 28-31, 2002, Breckenridge, Colorado. p. 145.
GENETIC VARIABILITY AMONG ACCESSIONS OF GARLIC IN THE USDA NATIONAL PLANT GERMPLASM SYSTEM - (Abstract)
VOLK, G.M., HENK, A.D., RICHARDS, C.M. GENETIC VARIABILITY AMONG ACCESSIONS OF GARLIC IN THE USDA NATIONAL PLANT GERMPLASM SYSTEM. American Society of Plant Biologists. 2002. Pp25.
SUGAR BEET MICROSATELLITES - (Abstract)
Panella, L.W., Brownson, M.P., Richards, C.M., Mitchell, S.E., Kresovich, S. 2002. Sugar beet microsatellites . Plant Animal and Microbe Genomes Conference.

   
 
Last Modified: 10/03/2008
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