National Program Leader For:

• 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, Utilization, and Distribution of Maize Genetic Stocks and Associated Descriptive Information
  
  Accession Number: 443470
  
  
• Manage, Expand, and Evaluate the U.S. National Collection of Temperate-adapted Woody Landscape Plant Germplasm and Associated Descriptive Data
  
  Accession Number: 443737
  
  
• Curation, Modernization, and Information Management of the U.S. National Arboretum Herbarium Collections
  
  Accession Number: 443742
  
  
• Management of Germplasm and Associated Descriptive Data for Crops Adapted to Arid Lands and Regeneration of Germplasm with Special Climate Needs
  
  Accession Number: 443835
  
  
• An Integrated Approach for Plant Genetic Resources Conservation, Characterization, Evaluation, Documentation, and Distribution
  
  Accession Number: 443856
  
  
• Management and Characterization of Microbial Genetic Resources and Associated Descriptive Information
  
  Accession Number: 443864
  
  
• Curation and Research to Safeguard and Expand Collections of Plant and Microbial Genetic Resources and Associated Descriptive Information
  
  Accession Number: 443907
  
  
• Genetic Resource and Information Management for Pulse, Temperate Forage Legume, Oilseed, Vegetable, Grasses, Sugar, Ornamental, and Other Crops
  
  Accession Number: 443951
  
  
• Operate and Improve the GRIN-Global Information Management System and Other GRIN Websites to Support USDA/ARS Genetic Resource Collections
  
  Accession Number: 443955
  
  
• Management and Development of Apple, Cold-Hardy Grape, and Tart Cherry Genetic Resources and Associated Information
  
  Accession Number: 443957
  
  
• Management of Potato Genetic Resources and Associated Descriptive Information
  
  Accession Number: 443960
  
  
• Expansion and Improvement of Plant-Associated Fungal Resources and Associated Descriptive Data in the U.S. National Fungus Collections and Databases
  
  Accession Number: 443992
  
  
• Conservation and Utilization of Temperate-Adapted Fruit, Nut, and Other Specialty Crop Genetic Resources
  
  Accession Number: 443999
  
  
• Seed Increase, Evaluation, and Phytosanitary Assessment of Tropically-Adapted Genetic Resources
  
  Accession Number: 444005
  
  
• Genetic Resource and Information Management and Genetic Improvement of Germplasm for Tropical and Subtropical Fruits, Sugarcane, and Related Grasses
  
  Accession Number: 444016
  
  
• Conservation, Management, Characterization, and Distribution of Subtropical and Tropical Ornamental Genetic Resources
  
  Accession Number: 444017
  
  
• Conservation and Utilization of Tropical and Subtropical Fruit, Cacao, Coffee, and Bamboo Germplasm and Associated Descriptive Information
  
  Accession Number: 444028
  
  
• Management of Crop Genetic Resources and Descriptive Information
  
  Accession Number: 444044
  
  
• Genotypic Characterization of Genetic Resources for Cacao, Coffee, and Other Tropical Perennial Crops Economically Important to the United States
  
  Accession Number: 444058
  
  
• Management of Diverse Germplasm and Associated Descriptive Information in the USDA Agricultural Research Service National Small Grains Collection
  
  Accession Number: 444080
  
  
• Conservation, Management, and Genetic Improvement of Tropical and Subtropical Fruit, Nut, and Beverage Crop Germplasm for the Pacific Region
  
  Accession Number: 444088
  
  
• Genetic Resources Acquisition, Conservation, International Exchange, and Taxonomic Expertise in Support of the U.S. National Plant Germplasm System
  
  Accession Number: 444127
  
  
• Management of Cotton Genetic Resources and Genetic Improvement of Cotton
  
  Accession Number: 444798
  
  
• Conservation, Characterization, Evaluation, and Utilization of Priority Vegetable Crop Genetic Resources and Associated Descriptive Information
  
  Accession Number: 445126
  
  
• Characterizing Host-Plant Resistance to Cacao Diseases and Abiotic Stresses and Breeding Disease-Resistant, Stress-Tolerant Cacao Germplasm
  
  Accession Number: 445215
  
  
• Citrus and Date Genetic Resource Conservation and Utilization
  
  Accession Number: 445633
  
  
• Conservation and Utilization of Genetic Resources and Associated Data for Perennial Crops Adapted to Mediterranean and Subtropical Climates
  
  Accession Number: 446102
  
  

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

Safeguarding plant genetic resources in the United States during global climate change - (Peer Reviewed Journal)

Volk, G.M., Carver Jr., D.P., Irish, B.M., Marek, L., Frances, A.L., Greene, S.L., Khoury, C., Bamberg, J.B., Del Rio, A., Warburton, M.L., Bretting, P.K. 2023. Safeguarding plant genetic resources in the United States during global climate change. Crop Science. 63(4):2274-2296. https://doi.org/10.1002/csc2.21003.

Safeguarding plant genetic resource collections for agriculture - (Trade Journal)

Volk, G.M., Walters, C.T., Warburton, M.L., Bretting, P.K. 2022. Safeguarding plant genetic resource collections for agriculture. CSA News. 67(7):34-36. https://doi.org/10.1002/csan.20785.

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 - (Book / Chapter)

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 - (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.

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 - (Research Notes)

MANAGING LARGE DIVERSE GERMPLASM COLLECTIONS - (Trade Journal)

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

MAIZE GENETIC RESOURCE MANAGEMENT - (Peer Reviewed Journal)

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