National Program Leader For:

• Cocoa, Coffee, and Alternative Crops Research
  
  Accession Number: 49113
  
  
• Staffing and Operation for National Clonal Repositories for Plant Germplasm
  
  Accession Number: 141156
  
  
• Information Transfer - Genetic Resources
  
  Accession Number: 142364
  
  
• Evaluation of Germplasm of Horticulture and Sugarcrops
  
  Accession Number: 145745
  
  
• International and Domestic Cooperative Agreements
  
  Accession Number: 418390
  
  
• International and Domestic Cooperative Agreements
  
  Accession Number: 425614
  
  
• Management of Specimens and Associated Information in the U.S. National Fungus Collections, with Emphasis on Critically Important Plant Pathogenic Fungi
  
  Accession Number: 434097
  
  
• Management and Characterization of Agriculturally and Biotechnologically Important Microbial Genetic Resources and Associated Information
  
  Accession Number: 434131
  
  
• Subtropical and Tropical Ornamental Genetic Resource Management, Characterization, and Genetic Improvement
  
  Accession Number: 434198
  
  
• Management of Genetic Resources and Associated Information in the USDA-ARS National Small Grains Collection
  
  Accession Number: 434208
  
  
• Seed Increase, Evaluation, and Phytosanitary Assessment of Quarantined and Tropically-adapted Genetic Resources
  
  Accession Number: 434218
  
  
• Conservation and Utilization of Tropical and Subtropical Tree Fruit, Cacao and Bamboo Genetic Resources
  
  Accession Number: 434221
  
  
• Management of Temperate-Adapted Fruit, Nut, and Specialty Crop Genetic Resources and Associated Information
  
  Accession Number: 434229
  
  
• Plant Genetic Resource Management and Information System Development
  
  Accession Number: 434242
  
  
• Management of Temperate-adapted Forage Legume Genetic Resources and Associated Information
  
  Accession Number: 434246
  
  
• Management and Utilization of Maize Genetic Stocks and Associated Information
  
  Accession Number: 434253
  
  
• Management and Utilization of Cotton Genetic Resources and Associated Information
  
  Accession Number: 434259
  
  
• Management and Development of Apple, Cold-Hardy Grape, and Tart Cherry Genetic Resources and Associated Information
  
  Accession Number: 434266
  
  
• Management of the National Collection of Carya Genetic Resources and Associated Information
  
  Accession Number: 434273
  
  
• Conservation, Characterization, Evaluation, and Distribution of Grain, Oilseed, Vegetable, Subtropical and Tropical Legume, and Warm Season Grass Genetic Resources and Associated Information
  
  Accession Number: 434296
  
  
• Management, Characterization, and Evaluation of Pacific Tropical and Subtropical Fruit and Nut Genetic Resources and Associated Information
  
  Accession Number: 434299
  
  
• Managing Genetic Resources and Associated Information of Grape, Tree Fruit, Tree Nut, and Other Specialty Crops Adapted to Mediterranean Climates
  
  Accession Number: 434303
  
  
• Management of Genetic Resources and Associated Information in the U. S. Potato Genebank
  
  Accession Number: 434313
  
  
• Characterization, Systematics, and Acquisition of Genetic Resources of Carrot, Potato, and Related Wild Species
  
  Accession Number: 434314
  
  
• Management of Arid Land Plant Genetic Resources and Regeneration of Accessions with Special Climatic Requirements
  
  Accession Number: 434316
  
  
• Efficient and Effective Preservation and Management of Plant and Microbial Genetic Resource Collections
  
  Accession Number: 434330
  
  
• Conservation, Management and Distribution of Citrus and Date Genetic Resources and Associated Information
  
  Accession Number: 434335
  
  
• Management of Priority Legume, Oilseed, Vegetable, Forage Grass, Sugar, Ornamental, and Medicinal Plant Genetic Resources and Associated Information
  
  Accession Number: 434340
  
  
• Conservation, Evaluation, and Distribution of Sugarcane, Mango, Avocado and Other Subtropical and Tropical Genetic Resources and Associated Data
  
  Accession Number: 434342
  
  
• Conservation, Characterization, Evaluation of Temperate-Adapted Woody Landscape Plant Genetic Resources and Associated Data
  
  Accession Number: 434355
  
  
• Plant Genetic Resource Acquisition, Conservation, International Exchange, and Taxonomic and Nomenclatural Support for the U.S. National Plant Germplasm System
  
  Accession Number: 434391
  
  
• Characterizing and Evaluating the Genetic Diversity and Horticultural Value of Genetic Resources for Cacao and Other Tropical tree crops Economically important to the United States
  
  Accession Number: 434392
  
  
• Develop, Enhance, and Operate GRIN-Global and Other Genetic Resource Information Systems to Support the U.S. National Plant Germplasm System and Other USDA-ARS Genetic Resource Collections
  
  Accession Number: 434403
  
  
• Systematics, Nomenclature, and Genetic Diversity of Priority Genera of Woody Landscape Plants
  
  Accession Number: 434433
  
  
• Conservation and Utilization of Priority Vegetable Crop Genetic Resources and Associated Information
  
  Accession Number: 434562
  
  
• Development and Application of Genomic-assisted Breeding Strategies to Produce Disease-resistant Cacao Genetic Resources
  
  Accession Number: 434787
  
  

Publications (Clicking on the reprint icon will take you to the publication reprint.)

Expanding learning resources for plant genetic resource conservation and use - (Abstract Only)

Byrne, P., Volk, G.M., Bretting, P.K. 2020. Expanding learning resources for plant genetic resource conservation and use. ASA-CSSA-SSSA Annual Meeting Abstracts.

New learning materials for plant genetic resources conservation and use - (Abstract Only)

Byrne, P., Volk, G.M., Bretting, P.K. 2020. New learning materials for plant genetic resources conservation and use. National Association of Plant Breeders.

Plant genetic resources training materials deemed essential by international survey - (Peer Reviewed Journal)

Volk, G.M., Bretting, P.K., Byrne, P.F. 2019. Plant genetic resources training materials deemed essential by international survey. Crop Science. 59:2308-2316. https://doi.org//10.2135/cropsci2019.05.0324.

Educating the next generation of genebank workers - (Abstract Only)

Byrne, P., Volk, G.M., Bretting, P.K. 2019. Educating the next generation of genebank workers. Crop Science Society of America. 2018 ASA/CSSA Meeting.

Role of the U. S. Department of Agriculture’s National Genetic Resources Advisory Council (NGRAC) in Providing Strategic Recommendations for Strengthening National Genetic Resources Conservation and Use - (Abstract Only)

Global access to maize germplasm provided by the U.S. National Plant Germplasm System and by U.S. plant breeders - (Peer Reviewed Journal)

Kurtz, B., Gardner, C.A., Millard, M.J., Bretting, P.K., Nickson, T., Smith, J.C. 2015. Global access to maize germplasm provided by the U.S. National Plant Germplasm System and by U.S. plant breeders. Crop Science. 56(3):931-941.

Procedures and best management practices for genetically engineered traits in USDA/ARS germplasm and breeding lines - (Abstract Only)

Greene, S.L., Blalock, J., Gardner, C.A., Hellier, B.C., Mcgrath, J.M., Nelson, R.L., Percy, R.G., Scorza, R., Scott, R.A., Yeater, K.M., Bretting, P.K. 2015. Procedures and best management practices for genetically engineered traits in USDA/ARS germplasm and breeding lines. Meeting Abstract. Crop Science Society of America, Minneapolis, MN. Nov. 15-18, 2015.

The vulnerability of US apple (Malus) genetic resources - (Peer Reviewed Journal)

Volk, G.M., Chao, C.T., Norelli, J.L., Brown, S.K., Fazio, G., Peace, C., McFerson, J., Zhong, G., Bretting, P.K. 2015. The vulnerability of US apple (Malus) genetic resources. Genetic Resources and Crop Evolution. 62(5):765-794. doi:10.1007/s10722-014-0194-2.

Using the GRIN-Global System to Identify Useful Plant Genetic Resources & Information - (Abstract Only)

Gardner, C.A., Cyr, P.D., Millard, M.J., Gu, L.M., Reisinger, M.A., Emberland, G.P., Sinnott, Q.P., Chung, J.C., Kinard, G.R., Bretting, P.K. 2012. Using the GRIN-Global System to Identify Useful Plant Genetic Resources & Information. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Abstract 259-4.

The GRIN-Global Information Management System – Public Interface Demonstration and Input Opportunity - (Abstract Only)

Cyr, P.D., Gardner, C.A., Little, R.E., Gu, L.M., Weaver, B.E., Millard, M.J., Emberland, G.P., Reisinger, M.A., Sinnott, Q.P., Kinard, G.R., Mackay, M., Guarino, L., Bretting, P.K. 2011. The GRIN-Global Information Management System – Public Interface Demonstration and Input Opportunity. Plant and Animal Genome Conference. Abstract C904, p. 267.

GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System - (Abstract Only)

Cyr, P.D., Weaver, B., Millard, M.J., Gardner, C.A., Bohning, M.A., Emberland, G.P., Sinnott, Q.P., Kinard, G.R., Franco, T., Mackay, M., Guarino, L., Bretting, P.K. 2009. GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System [abstract]. Plant & Animal Genome XVII: International Conference on the Status of Plant & Animal Genome Research. Poster abstract number 800, p. 136.

GRIN-Global: An International Project to Develop a Global Plant Genebank Information Management System - (Peer Reviewed Journal)

Postman, J.D., Bretting, P.K., Kinard, G.R., Cyr, P.D., Weaver, B., Millard, M.J., Gardner, C.A., Bohning, M.A., Emberland, G.P., Sinnott, Q.P., Ayala Silva, T., Hummer, K.E., Franco, T., Mackay, M., Guarino, L. 2010. GRIN-Global: An International Project to Develop a Global Plant Genebank Information Management System. Acta Horticulturae. 859:49-55.

The GRIN-Global Information Management System – A Preview and Opportunity for Public User Input - (Abstract Only)

Cyr, P.D., Little, R.E., Weaver, B.E., Millard, M.J., Gardner, C.A., Emberland, G.P., Reisinger, M.A., Sinnott, Q.P., Kinard, G.R., Bretting, P.K. 2010. The GRIN-Global Information Management System – A Preview and Opportunity for Public User Input [abstract]. Plant and Animal Genome XVII Conference. P800.

GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System - (Abstract Only)

Cyr, P.D., Weaver, B.E., Millard, M.J., Gardner, C.A., Bohning, M.A., Emberland, G.P., Sinnott, Q.P., Kinard, G.R., Franco, T., Mackay, M., Guarino, L., Postman, J.D., Hummer, K.E., Ayala Silva, T., Bretting, P.K. 2009. GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System [abstract]. 21st Annual AAIC Meeting-The Next Generation of Industrial Crops, Processes, and Products. p. 46.

A global portal enabling worldwide access to information on conservation and use of biodiversity for food and agriculture ()

Arnaud, E., Dias, S., Mackay, M., Cyr, P.D., Gardner, C.A., Bretting, P.K., Kinard, G.R., Guarino, L. 2010. A global portal enabling worldwide access to information on conservation and use of biodiversity for food and agriculture. In: Maurer, L., Tochtermann, K. Information and Communication Technologies for Biodiversity Conservation and Agriculture. Aachen, Germany: Shaker Verlag. p. 173-186.

GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System - (Abstract Only)

Bretting, P.K., Kinard, C.E., Cyr, P.D., Weaver, B., Millard, M.J., Gardner, C.A., Bohning, M.A., Emberland, G.P., Sinnott, Q.P., Postman, J.D., Hummer, K.E., Ayala Silva, T., Franco, T., Mackay, M., Gaurino, L. 2009. GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System. Meeting Abstract. 44(4):1179.

GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System - (Abstract Only)

Cyr, P.D., Weaver, B., Millard, M.J., Gardner, C.A., Bohning, M.A., Emberland, G.P., Sinnott, Q.P., Kinard, G.R., Bretting, P.K. 2009. GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System. ASA-CSSA-SSSA Annual Meeting Abstracts.

GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System - (Abstract Only)

Cyr, P.D., Weaver, B., Millard, M.J., Gardner, C.A., Bohning, M.A., Emberland, G.P., Sinnott, Q.P., Kinard, G.R., Postman, J.D., Franco, T., Mackay, M., Guarino, L., Bretting, P.K. 2009. GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System. Proceedings American Society of Horticultural Sciences. HORTSCIENCE. 44(4):1179.

GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System - (Abstract Only)

Cyr, P.D., Weaver, B.E., Millard, M.J., Gardner, C.A., Bohning, M.A., Emberland, G.P., Sinnott, Q.P., Kinard, G.R., Franco, T., Mackay, M., Guarino, L., Postman, J.D., Hummer, K.E., Ayala Silva, T., Bretting, P.K. 2009. GRIN-Global: An International Project to Develop a Global Plant Genebank and Information Management System [abstract]. Maize Genetics Conference Abstracts. 51:P43.

Gene banks offer breeders access to germplasm: Germplasm collections help to preserve genetic diversity ()

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.

PHYLOGENETIC RELATIONSHIPS AMONG NORTH AMERICAN POPCORNS AND THEIR EVOLUTIONARY LINKS TO MEXICAN AND SOUTH AMERICAN POPCORNS - (Peer Reviewed Journal)

Santacruz-Varela, A., Widrlechner, M.P., Ziegler, K.E., Salvador, R.J., Millard, M.J., Bretting, P.K. 2004. Phylogenetic relationships among North American popcorns and their evolutionary links to Mexican and South American popcorns. Crop Science. 44: 1456-1467.

DYNAMIC CONSERVATION OF PLANT GENETIC RESOURCES - (Peer Reviewed Journal)

ADAPTING THE CONTENT OF A TRADITIONAL COURSE FOR DELIVERY VIA THE WORLD WIDE WEB (WWW) - (Abstract Only)

ALLOZYME VARIATION IN DOMESTICATED HELIANTHUS ANNUUS AND WILD RELATIVES - (Abstract Only)

GENETIC VULNERABILITY AND EROSION IN ANNUAL CROPS - (Abstract Only)

ALLOZYME VARIATION IN DOMESTICATED HELIANTHUS ANNUUS AND WILD RELATIVES: A SURVEY OF SELECTED ACCESSIONS FROM THE NATIONAL PLANT GERMPLASM SYSTEM - (Peer Reviewed Journal)

GENETIC MARKERS AND HORTICULTURAL GERMPLASM MANAGEMENT - (Proceedings)

ISOZYME GENETIC MARKERS AND HELIANTHUS GERMPLASM MANAGEMENT - (Proceedings)

ISOZYME GENETIC MARKERS AND HELIANTHUS GERMPLASM MANAGEMENT - (Abstract Only)

IMAGE-INTEGRATED COMPUTER CATALOGING OF MAIZE GERMPLASM ()

MANAGING LARGE DIVERSE GERMPLASM COLLECTIONS ()

THE CO-EVOLUTION OF MAIZE AND HUMAN CULTURES: AN INTERDISCIPLINARY APPROACH ()

MAIZE GENETIC RESOURCE MANAGEMENT - (Peer Reviewed Journal)

DEVELOPMENT OF AN INTERDISCIPLINARY RESEARCH APPROACH FOR UNDERSTANDING THECO-EVOLUTION OF MAIZE AND HUMAN CULTURE ()