Department of Crop Sciences
Randall Nelson
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Randall Nelson

Professor of Plant Genetics
232 National Soybean Res Ctr
1101 West Peabody Drive
Urbana, IL 61801
(217) 244-4346

Primary Disciplines


Ph.D. Plant Breeding and Genetics, University of Illinois
M.S. Production and Physiology, Iowa State University
B.S. Agricultural Science, South Dakota State University

Journal Articles

Pandurangan Sudhakar, Agnieszka Pajak,Stephen Molnar, Elroy Cober, Sangeeta Dhaubhadel, Cinta Hernández-Sebastià, Randall L. Nelson, Steven C. Huber, and Frédéric Marsolais. 2012. Journal of Experimental Botany (in press)
Burkey, Kent, Fitzgerald L. Booker, Elizabeth A. Ainsworth and Randall L. Nelson. 2012. Field assessment of a snap bean ozone bioindicator system under elevated ozone and carbon dioxide in a free air system. Environmental Pollution (in press)
R. L. Nelson and E.O.C. Johnson. 2012. Registration High-Yielding Soybean Germplasm Line LG04-6000. Journal of Plant Registrations 6: (in press)
R. L. Nelson and E.O.C. Johnson. 2011. Registration of Soybean Germplasm Line LG00-3372. Journal of Plant Registrations. 5: 403-405.
R. L. Nelson and E.O.C. Johnson. 2011. Registration of Soybean Germplasm Line LG00-6313. Journal of Plant Registrations. 5: 406-409.
Alemu Mengistu, Jason Bond, Rouf Mian, Randall Nelson, Grover Shannon, and Allen Wrather. 2011. Identification of Soybean Accessions Resistant to Cercospora sojina by Field Screening, Molecular Markers, and Phenotyping. Crop Sci. 51:1101-1109
Jeong-Dong Lee, Tri D. Vuong, H. Moon, Ju-Kyung Yu, R.L. Nelson, Henry T. Nguyen and J. Grover Shannon. 2011. Genetic Diversity and Population Structure of Korean and Chinese Soybean [Glycine max (L.) Merr.] Accessions. Crop Sci 51: 1080-1088.
Hari B. Krishnan and Randall L. Nelson. 2011. Proteomic analysis of high protein soybean (Glycine max) accessions demonstrates the contribution of novel glycinin subunits. J Ag Food Chem 59: 2432-2439.
Oliveira, M. F., R.L. Nelson, I.O. Geraldi, C.D. Cruz, and J.F.F. de Toledo. 2011. Establishing a soybean germplasm core collection. Field Crops Research 119: 277-289.
Nelson, R. L. 2011. Managing self-pollinated germplasm collections to maximize utilization. Plant Genetic Resources 9: 123-133.
Betzelberger, A.M., K.M. Gillespie, J.M. Mcgrath, R.P. Koester, R.L. Nelson, and E. Ainsworth. 2010. Effects of chronic elevated ozone concentration on antioxidant capacity, photosynthesis and seed yield of 10 soybean cultivars. Plant, Cell and Environment 33, 1569-1581
Shannon, J. G., R.L. Nelson, J.D. Lee, and J.A. Wrather. 2010. Registration of LG04-6863 soybean germplasm line with diverse pedigree. Journal of Plant Registrations 4: 70-72.
Walker David R, H.R. Boerma H R, D.K. Harris, D.V. Phillips, R.W. Schneider, G.L. Hartman, M.R. Miles, D.B. Weaver, E.J. Sikora, S.H. Moore, J.B. Buckley, E.R. Shipe, J.D. Mueller D.L. Wright, J.J. Marois, and R.L. Nelson. 2010. Evaluation of USDA Soybean Germplasm Accessions for Resistance to Soybean Rust in the Southeastern United States. Crop Sci 51: 678-693
Meiping Zhang; Yen-Hsuan Wu; Mi-Kyung Lee; Yun-Hua Liu; Ying Rong; Teofila S. Santos; Chengcang Wu; Fangming Xie; Randall L. Nelson; Hong-Bin Zhang. 2010. Numbers of genes in the NBS and RLK families vary by more than four-fold within a plant species and are regulated by multiple factors. Nucleic Acids Research 38: 6513-6525.
Tian, Zhixi, Xiaobo Wang, Rian Lee, Yinghui Li, James E. Specht, Randall L. Nelson, Phillip E. McClean, Lijuan Qiu, and Jianxin Ma. 2010. Artificial selection for determinate growth habit in soybean. PNAS 107: 8563-8568.
Mikel, Mark A., Brian W. Diers, Randall L. Nelson, and Hebron H. Smith. 2010. Genetic Diversity and Agronomic Improvement of North American Soybean Germplasm. Crop Sci. 50: 1219-1229.
Chakraborty, Nanda, Joe Curley, Reid D. Frederick, David L. Hyten, Randall L. Nelson, Glen L. Hartman, and Brian W. Diers. 2009. Mapping and confirmation of a new allele at Rpp1 from soybean PI 594538A conferring RB lesion type resistance to soybean rust. Crop Science 49: 783-790.
Lee, J.-D., J. G. Shannon, Y.-S. So, D. A. Sleper, R. L. Nelson, J.-H. Lee and M.-G. Choung. 2009. Environmental effects on lutein content and relationship of lutein and other seed components in soybean. Plant Breeding 128: 97-100.
Wang, Wenyi; Dia, Vermont P.; Vasconez, Miguel; Demejia, Elvira Gonzalez and Nelson, Randall L. 2008. Analysis of soybean protein-derived peptides and the effect of cultivar, environmental conditions, and processing on Lunasin concentration in soybean and soy products. In: Special edition of Journal of the Association of Official Analytical Chemists International on Accurate methodology for amino acids and bioactive peptides in functional foods and dietary supplements for assessing protein adequacy and health effects. J AOAC Int: 91 (4): 936-946.
Kim, Won-Seok; Heo Jae Ho, Randall L. Nelson, and Hari B. Krishnan. 2008. Identification of Several gy4 Nulls from the USDA Soybean Germplasm Collection Provides New Genetic Resources for the Development of High-Quality Tofu Cultivars. J. Agric. Food Chem., 2008, 56: 11320-11326.
Smith, James, R., Alemu Mengistu, Randall L. Nelson, and Robert L. Paris. 2008. Identification of Soybean Accessions with High Germinability in High-Temperature Production Environments. Crop Sci. 48: 2279-2288.
Hyten, David L., Qijian Song, Ik-Young Choi, Mun-Sup Yoon, James E. Specht, Lakshmi K. Matukumalli, Randall L. Nelson, Randy C. Shoemaker, Nevin D. Young, and Perry B. Cregan. 2008. High-throughput genotyping with the GoldenGate assay in the complex genome of soybean. Theor. Applied Genetics 116: 945-952.
Rasolohery, Claudine A; Berger, Monique; Lygin, Anatoliy V; Lozovaya, Vera V; Nelson, Randall L; and Dayde, Jean. 2008. Effect of temperature and water availability during late maturation of the soybean seed on germ and cotyledon isoflavone content and composition. J. Sci. of Food Agr. 88: 218-228.
Chen, Charles Y; Nelson, Randall L; Gu, Cuihua; Mensah, Clarice; and Wang Dechun. 2007. SSR Marker Diversity of Soybean Aphid Resistance Sources in North America. Genome 50: 1104-1111.
Singh, R. J., G. H. Chung, and R. L. Nelson. 2007. Landmark research in legumes. Genome 50: 525-537.
Farias Neto; AL; Hasmi; R; Schmidt; M; Carlson; SR; Hartman; GL; Li; Shuzian; Nelson, RL; and Diers; BW. 2007. Mapping and Confirmation of a New Sudden Death Syndrome Resistance QTL on Linkage Group D2 from the Soybean Genotypes PI 567374 and "Ripley". Mol Breeding 20: 53-62.
Guzman, PS; Diers, BW; Neece, DJ; St. Martin, SK; LeRoy, AR; Grau, CR; Hughes, TJ; and Nelson, RL. 2007. QTL Associated with Yield in Three Backcross-Derived Populations of Soybean. Crop Sci. 47: 111-122.
Hyten, DL; Choi, IY; Song, Q.; Shoemaker, RC; Nelson, RL; Costa, JM; Specht, JE; and Cregan; PB. 2007. Highly Variable Patterns of Linkage Disequilibrium in Multiple Soybean Populations. Genetics 175: 1937-1944.
Krishnan, HB; Natarajan, SS; Mahmoud, AA; and Nelson, RL. 2007. Identification of Glycinin and β-Conglycinin Subunits that Contribute to the Increased Protein Content of High-Protein Soybean Lines. J Ag Food Chem 55: 1839-1845.
Hyten, David L; Hartman, Glen L; Nelson, Randall L; Frederick, Reid D; Concibido, VC; and Cregan, Perry B. 2007. Map Location of the rpp1 locus that confers resistance to Phakiopsora pachyrhizi (soybean rust) in soybean. Crop Sci. 47: 837-840
Hyten, David L., Qijian Song, Youlin Zhu, Ik-Young Choi, Randall L. Nelson, Jose M. Costa, James E. Specht, Randy C. Shoemaker and Perry B. Cregan. 2006. Impacts of Genetic Bottlenecks on Soybean Genome Diversity. PNAS 103: 16666-16671
Chen, Y; Wang, D; Arelli, P; Ebrahimi, M; and Nelson, RL. 2006. Molecular marker diversity of SCN-resistant sources in soybean. Genome 49: 938-949.
Gonzalez De Mejia, Elvira; Vasconez, Miguel; De Lumen, Ben O. and Nelson, Randall. 2006. Lunasin Concentration in Different Soybean Genotypes, Commercial Soy Protein, and Isoflavone Products. J. Agric. Food Chem. 52: 5882-5887.
Christ, M.M, E.A. Ainsworth, R.L. Nelson, U. Schurr, and A. Walter. 2006. Anticipated yield loss in field-grown soybean under elevated ozone can be avoided at the expense of leaf growth during early reproductive growth stages in favorable environmental conditions. J. Exp. Bot. 57: 2267-2275
Nelson, R.L. and E.O.C. Johnson. 2006. Registration of Soybean Germplasm Lines LG97-7012, LG98-1445, and LG98-1605. Crop Sci. 46: 1822-1824
Nelson, R.L. and E.O.C. Johnson. 2006. Registration of LG96-1797 Soybean Germplasm. Crop Sci. 46: 1403.
Chen, Yiwu and R.L. Nelson. 2006. Variation in Early Plant Height in Wild Soybean. Crop Sci. 46: 865-869.
Prior, SA; Torbert, HA; Runion, GB; Rogers, HH; Ort, DR; and Nelson, RL. 2005. Free-Air Carbon Dioxide Enrichment of Soybean-Influence of Crop Variety on Residue Decomposition. Journal Environ Qual. 35: 1470-1477.
Morgan, P.B., T.A. Mies, G.A. Bollero, R.L. Nelson, and S.P Long. 2006. Season-long elevation of ozone concentration to projected 2050 levels under fully open-air conditions substantially decreases the growth and production of soybean. New Phytologist 170: 333-343.
Kirakosyan, A., P. Kaufman, R.L Nelson, M.J. Kasperbauer, J.A. Duke, E. Seymour, S.C. Chang, S. Warber, and S. Bolling. 2006. Isoflavone levels in five soybean (Glycine max) genotypes are altered by phytochrome-mediated light treatments. J. Ag. Food Chem. 54: 54-58.
Wang, Y., H.A. Hobbs, C.B. Hill, L.L. Domier, G.L. Hartman, and R.L. Nelson. 2005. Evaluation of ancestral lines of U.S. soybean cultivars for resistance to four soybean viruses. Crop Sci. 45: 639-644.
Chen, Y, and R.L Nelson. 2005. Relationship between origin and genetic diversity in Chinese soybean germplasm. Crop Sci. 45: 1645-1652.
Shannon, J.G., R.L. Nelson, and J.A.Wrather. 2005. Registration of S99-11509 and S99-11986 improved soybean germplasm with diverse pedigree. Crop Sci. 45: 1672-1673.
Lozovaya, V.V., A.V. Lygin, A.V. Ulanov, R.L. Nelson, J. Dayde, and J.M.Widholm 2005. Effect of temperature and soil moisture status during seed development on soybean seed development on soybean seed isoflavone concentration and composition. Crop Sci. 45: 1934-1940.
Morgan, P.B., GA. Bollero, R.L. Nelson, F.G Dohleman, and S.P. Long. 2005. Smaller than predicted increase in aboveground net primary production and yield of field-grown soybean under fully open-air [CO2] elevation. Global Change Biol. 10: 1856-1865.
Mensah, C., C. DiFonzo, R.L. Nelson, and D. Wang. 2005. Resistance to soybean aphid in early maturing soybean germplasm. Crop Sci 45: 2228-2233.
Sneller, C.H., R.L Nelson, T.E. Carter, Jr., and Z. Cui. 2005. Genetic diversity in crop improvement: The soybean experience. J. of Crop Improvement. 14: 103-144.
Kabelka, E.A., Diers, B.W., Fehr, W.R., LeRoy, A.R., Baianu, I.C., You, T., Neece, D.J., and R.L. Nelson. 2004. Putative alleles for increased yield from soybean plant introductions. Crop Sci. 44: 784-791.
Ainsworth, E.A., A. Rogers, R.L. Nelson and S. P. Long. 2004. Testing the “source-sink” hypothesis of down-regulation of photosynthesis in elevated [CO2] in the field with single gene substitutions in Glycine max. Ag. For. Met. 122: 85-94.
Gonzalez de Mejia, E., M. Vasconez, B. de Lumen, and R.L. Nelson. 2004. Lunasin content in different genotypes of soybean seeds and commercial products. J. Agric. Food Chem. 52: 5882-5887.
Hofmann, N.E., R.L. Nelson, and S.S. Korban. 2004. Influence of media components and pH on somatic embryo induction in three genotypes of soybean. Plant Cell Tissue and Organ Culture 77: 157-163.
Ko, Tae-Seok, R.L. Nelson, and S.S. Korban. 2004. Screening multiple soybean genotypes (MG 00 to MG VIII) for somatic embryogenesis following Agrobacterium-mediated transformation of immature cotyledons. Crop Sci. 44: 1825-1831.
Chen, Y. and R.L. Nelson. 2004. Evaluation and Classification of Leaflet Shape and Size in Wild Soybean. Crop Sci. 44: 671-677.
Warburton, M.L., Brown-Guedira, G.L., and R.L. Nelson. 2004. Registration of LG92-4208, LG94-1128, LG94-1906, and LG94-4667 soybean germplasm. Crop Sci. 44: 1501-1502.
Brown-Guedira, G.L., M.L. Warburton, and R.L. Nelson. 2004. Registration of LG92-1255, LG93-7054, LG93-7654, and LG93-7792 soybean germplasm. Crop Sci. 44: 356-357.
Hofmann, N.E., R. Raja, R.L. Nelson, and S.S. Korban. 2004. Mutagenesis of embryogenic cultures of soybean and detecting polymorphisms using RAPD markers. Biol. Plant. 48: 173-177.
Chen, Y. and R.L. Nelson. 2004. Genetic variation and relationships among cultivated, wild, and semi-wild soybean. Crop Sci. 44: 316-325.
Chen, Y. and R.L. Nelson. 2004. Identification and characterization of a white-flowered wild soybeanplant. Crop Sci. 44: 339-342.
Rayburn, Lane, D.P. Biradar, R.L. Nelson, R. McCloskey, and K. M. Yeater. 2004. Documenting Intraspecfic Genome Size Variation in Soybean. Crop Sci 44: 261-264.
Mueller, D.S., G.L. Hartman, R.L. Nelson, and W.L. Pedersen. 2002. Evaluation of Glycine max germplasm for resistance to Fusarium solani f. sp. glycines. Plant Dis. 86:741-746.
Hoffman, D.D., B.W. Diers, G.L. Hartman, C.D. Nickell, R.L. Nelson, W.L. Pedersen, E.R. Cober, A.E. Dorrance, G.L. Graef, J.R. Steadman, C.R. Grau, B.D. Nelson, L.E. del Rio, T. Helms, V. Poysa, I. Rajcan, and W.C. Stienstra. 2002. Selected soybean plant introductions with partial resistance to Sclerotinia slcerotiorum. Plant Dis. 86:971-980.
Zenglu Li and R.L. Nelson. 2002. RAPD Marker Diversity among Soybean and Wild Soybean Accessions from Four Chinese Provinces. Crop Sci. 42: 1737-1744.
Bradley, C.A., G.L. Hartman, R.L. Nelson, D.S. Mueller, and W.L. Pedersen. 2001. Response of ancestral soybean lines and commercial cultivars to Rhizoctonia root and hypocotyl rot. Plant Dis. 85:1091-1095.
Hulting, A.G., L.M. Wax, F.W. Simmons, R.L. Nelson. 2001. Soybean (Glycine max (L.) Merr.) cultivar tolerance to sulfentrazone. Crop Protection 20 (8): 679-683.
Zenglu Li, Lijuan Qiu, J. A. Thompson, M. Welsh, and R.L. Nelson. 2001. Molecular Genetic Analysis of the U.S. and Chinese Soybean Ancestral Lines. Crop Sci. 41: 1330-1336.
Zenglu Li and R.L. Nelson. 2001. Genetic Diversity among Soybean Accessions from Three Countries Measured by RAPDs. Crop Sci. 41: 1337-1347.
Taylor-Lovell, S., L. M. Wax, and R.L. Nelson. 2001. Phytotoxic response and yield of several soybean (Glycine max) varieties treated with sulfentrazone and flumioxazin. Weed Technology 15: 95-102.
Sinclair, T.R., L.C. Purcell, C.A. King, V. Vadez, R. Serraj, and R.L. Nelson. 2000. Identification of soybean genotypes with N2 fixation tolerance to water deficit. Crop Sci. 40: 1803-1809.
Brown-Guedira, G. L., J. A. Thompson, R.L. Nelson and M. L. Warburton. 2000. Evaluation of Genetic Diversity of Soybean Introductions and North American Ancestors Using RAPD and SSR Markers. Crop Sci. 40: 815-823.
Thompson, J.A., P.J. Amdor, and R.L. Nelson. 1999. Registration of LG90-2550 and LG91-7350R Soybean Germplasm. Crop Sci. 39: 302-303
Song, Q. J., C. V. Quigley, R.L. Nelson, T.E. Carter, H. R. Boerma, J. L. Strachan, and P.B. Cregan. 1999. A selected set of trinucleotide simple sequence repeat markers for soybean culitvar identification. Plant Varieties and Seeds 12: 207-220.
Kyle, D.E., C.D. Nickell, R.L. Nelson and W.L. Pedersen. 1998. Response of soybean accessions from provinces in southern China to Phytophthora sojae. Plant Dis. 82: 555-559.
Thompson, J.A. and R.L. Nelson. 1998. Utilization of diverse germplasm for soybean yield improvement. Crop Sci. 38: 1362-1368.
Thompson, J.A. and R.L. Nelson. 1998. Core set of primers to evaluate genetic diversity in soybean. Crop Sci. 38: 1356-1362.
Thompson, J.A., R.L. Nelson, and L.O. Vodkin. 1998. Identification of diverse soybean germplasm using RAPD markers. Crop Sci. 38: 1348-1355.
Hammond, R. B., C. G. Helm, and R.L. Nelson. 1998. Introduced soybean lines from China: Screening for insect resistance. J. Econ. Entomol. 91: 546-551.
Wang, Y, R.L. Nelson, and Y. Hu. 1998. Genetic analysis of resistance to soybean mosaic virus in four soybean cultivars from China. Crop Sci. 38: 922-925.
Rayburn, A. L., D. P. Biradar, D.G. Bullock, R.L. Nelson, C. Gourmet, and J. B. Wetzel. 1997. Nuclear DNA content in Chinese soybean introductions. Annals Bot. 80: 321-325.
Hartman, G. L., Y. Huang, R.L. Nelson, and G. R. Noel. 1997. Germplasm evaluation of Glycine max for resistance to Fusarium solani, the causal organism of sudden death syndrome. Plant Dis. 81: 515-518.
Thompson, J.A., R.L. Bernard, and R.L. Nelson. 1997. A third allele at the dt1 locus. Crop Sci. 37: 757-762.
Thompson, J.A., L. E. Schweitzer and R.L. Nelson. 1997. Association of specific leaf weight and chlorophyll concentration with apparent photosynthesis in soybean. Photosynthesis Res. 49: 1-10
Nelson, R.L. 1996. The inheritance of a branching type in soybean. Crop Sci. 36: 1150-1152.
Thompson, J.A., R.L. Nelson, and L. E. Schweitzer. 1995. The relationships between specific leaf weight, photosynthetic rate, and seed yield in soybean. Crop Sci. 35: 1575-1581.
Vasilas, B. L., R.L. Nelson, J. J. Fuhrmann, and T. A. Evans. 1995. N2 fixation and N and dry matter remobilization in soybean lines with different seed-fill periods and seed yields. Crop Sci. 35: 809-813.
Vasilas, B. L. and R.L. Nelson. 1992. N2 fixation and dry matter and N accumulation in soybean lines with different seed-fill periods. Can. J. Plant Sci. 72: 1067-1074.
Guffy, R. D., J. D. Hesketh, R.L. Nelson, and R.L. Bernard. 1991. Seed growth rate, growth duration, and yield in soybean. Biotronics 20: 19-30.
Palmer, R. G., R.L. Nelson, R.L. Bernard, and D. M. Stelly. 1990. Genetics of three chlorophyll-deficient mutants in soybean: y19, y22, and y23. J. of Hered. 81:404-406.
Vasilas, B. L., R.L. Nelson, and R. M. Vanden Heuvel. 1990. Effect of method and plant sample on nitrogen fixation estimates in soybean. Agron. J. 82: 673-676.
Guffy, R. H., R. M. Vanden Heuvel, B. L. Vasilas, R.L. Nelson, M. A. Frobish, and J. D. Hesketh. 1989. Evaluation of the N2-fixation capacity of four soybean genotypes by several methods. Soil Biol. Biochem. 21: 339-352.
Nelson, R.L. and P. Wang. 1989. Variation and evaluation of seed shape in soybean. Crop Sci. 29: 147-150.
Nelson, R.L., C. D. Nickell, J. H. Orf, H. Tachibana, E. T. Gritton, C. R. Grau, and B. W. Kennedy. 1989. Evaluating soybean germplasm for brown stem rot resistance. Plt. Dis. 73: 110-114.
Nelson, R.L. 1988. Response to selection for time of flowering in soybean. Crop Sci. 28: 653-626.
Smith, J. R., R.L. Nelson, and B. L. Vasilas. 1988. Variation among soybean breeding lines in relation to yield and seed-fill duration. Agron. J. 80: 825-829.
Nelson, R.L. and L. E. Schweitzer. 1988. Evaluating soybean germplasm for specific leaf weight. Crop Sci. 28: 647-649.
Lin, Maw Sun and R.L. Nelson. 1988. Effect of plant height and flowering date on seed yield of determinate soybeans. Crop Sci. 28: 218-222.
Lin, Maw Sun and R.L. Nelson. 1988. Relationship between plant height and flowering date in determinate soybeans. Crop Sci. 28: 27-30.
Smith, J. R. and R.L. Nelson. 1987. Predicting yield from early generation estimates of reproductive growth period in soybean. Crop Sci. 27: 471-474.
Nelson, R.L. 1987. The relationship between seed-filling period and seed yield in selected soybean germplasm accessions. Field Crops Res. 15: 245-250.
Nelson, R.L. 1987. Measuring seed yield in soybean populations segregating for male sterility. Crop Sci. 27: 632-634.
Smith, J. R. and R.L. Nelson. 1986. Relationship between seed-filling period and yield among soybean breeding lines. Crop Sci. 26: 469-472.
Smith, J. R. and R.L. Nelson. 1986. Selection for seed-filling period in soybean. Crop Sci. 26: 466-469.
Nelson, R.L. 1986. Defining the seed-filling period in soybeans to predict yield. Crop Sci. 26: 132-135.
Nelson, R.L. and R.L. Bernard. 1984. Production and performance of hybrid soybeans. Crop Sci. 24: 549-553.

Conference Articles

Nelson, R.L. 2009. Expanding Genetic Diversity to Increase Soybean Seed Yield. World Soybean Research Conference-VIII Proceeding. Beijing, China.
Nelson, R.L. 2009. Collection, conservation, and evaluation of soybean germplasm. World Soybean Research Conference-VIII Proceeding. Beijing, China.
Nelson, R.L. 2004. Exchanging, preserving, characterizing, and utilizing soybean germplasm in the USA. World Soybean Research Conference-VII Proceeding. Foz do Iguassu, PR, Brazil. p. 631-637.
de Mejia, E.G., W. Wang, M. Vasconez-Costa, R.L. Nelson, and B.O. de Lumen. 2004. Physiologically active peptides in soybean and soy products. World Soybean Research-VII Conference Proceeding. Foz do Iguassu, PR, Brazil. p. 775-779.
Nelson, R.L. 2002. Effective use of genetic resources in soybean cultivar development. Proceedings of the India Soy Forum-2001. SOPA, Indore, M.P. India (invited presentation)
Carter, T.E., Jr, B.R. McCollum, R.L. Nelson, R.E. Freestone, and K.W. Matson. 1999. Soybean Asian variety evaluation (SAVE): Agronomic performance of modern Asian cultivars in the U.S. 1998. Special Report. 103 pp.\
Carter, T.E., Jr, R.L. Nelson, P. Cregan, H. Boerma, P. Manjarrez-Sandoval, X. Zhou, W. Kenworthy, G. Ude. 1998. Project SAVE (Soybean Asian Variety Evaluation): Potential new sources of yield genes with no strings from USB, public and private cooperative research. Proc. Am. Seed Trade Assoc. 28: 68-83.
Manjarrez-Sandoval, P, T.E. Carter, Jr, R.L. Nelson, R.E. Freestone, K.W. Matson, and B.R. McCollum. 1998. Soybean Asian variety evaluation (SAVE): Agronomic performance of modern Asian cultivars in the U.S. 1997. Special Report. 102 pp.
Manjarrez-Sandoval, P, T.E. Carter, Jr, R.L. Nelson, and R.E. Freestone. 1997. Soybean Asian variety evaluation (SAVE): Agronomic performance of modern Asian cultivars in the U.S. 1996. Special Report. 64 pp.
Nelson, R.L. 1991. Benefits of cooperative soybean germplasm research. International Agricultural Update Vol. 6, No. 3., p. 1-2. UIUC, College of Agriculture, Urbana, IL. (Invited Paper)
Nelson, R.L. 1990. Morphological traits used to differentiate soybean varieties. In Proceedings of the Workshop on the Examination of Varieties of Soya Bean. USDA-AMS, Commodities Scientific Support Division, Plant Variety Protection Office, Washington, D.C. pp. 69-80. (Invited Paper)
Wong, S., D. J. Boethel, R.L. Nelson, W. L. Nelson and W. J. Wolf (eds.) 1984. Proceedings of the Second U.S.-China Soybean Symposium. Office of International Cooperation and Development, U.S.D.A. Washington, D.C. 464 pp.
Nelson, R.L. 1984. A brief history and current status of the U.S. soybean germplasm collection. In S. Wong, D. J. Boethel, R.L. Nelson, W. L. Nelson, and W. J. Wolf (eds.). Proceedings of the Second U.S.-China Soybean Symposium. Office of International Cooperation and Development, U.S.D.A. Washington, D.C. p. 41-44.
Nelson, R.L. and R.L. Bernard. 1983. Germplasm collection, management, and evaluation. The subgenus: Soja. In B. J. Irwin, J. B. Sinclair and J. L. Wang (eds.) Proceedings of the First China/USA Soybean Symposium. INTSOY Series No. 25: 71-72.

Contributed Chapters

Singh, R. J., R. L. Nelson, and G. H. Chung. 2007. Soybean [Glycine max (L.) Merr.]. In: Genetic Resources, Chromosome Engineering, and Crop Improvement Series: Oilseed Crops- Volume 4. Edited by Ram J. Singh CRC Press (Taylor & Francis Group). pp. 13-50.
Carter, T. E., R.L. Nelson, C.H. Sneller, and Z. Cui. 2004. Genetic Diversity in Soybean. In Soybeans: improvement, production, and uses, eds. Boerma, H. R. and Specht, J. E. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, Madison, Wis., Vol. Agronomy; no. 16, pp. 303-416.
Palmer, R. G., T. Hymowitz, and R.L. Nelson. 1995. Germplasm diversity within soybean. In D. P. S. Verma and R. C. Shoemaker (eds). Soybean: Genetics, Molecular Biology and Biotechnology. C.A.B. International.

Invited Lectures

The Role of Exotic Germplasm in Breeding for Increased Seed Yield. Michigan State plant breeding symposium, 2011.
Public and Private Partnerships in Soybean Germplasm Utilization. Monsanto Seminar, Ankeny, IA, 2011.
Reasons to Change How You Think About Germplasm. Plant Science Department, SDSU Seminar, Brookings, SD, 2011.
The Genetic Contribution to Higher Soybean Yield. Indiana Certified Crop Advisers Conference, Indianapolis, 2011.
Genetic Diversity for Soybean Seed Composition. International Soybean Processing & Utilization Conference, St. Louis, 2011.
Genetic Diversity As a Key to Increase Soybean Seed Yield. American Seed Trade Assocation, Chicago, IL, 2011
If You Have Seen One Soybean You Haven’t Seen Them All. Truman State University, Kirksville, MO, April 2011.
Glycine Germplasm: Strategies for Utilization. Purdue University, West Lafayette, IN, 2010.
Genetic Diversity and Soybean Yield: Finding the Balance. American Society of Agronomy annual meetings. Long Beach, CA, 2010
Breeding Progress for Increasing U.S. Soybean Yield: Past, Present, and Future, Kyoto University, 2010.
Soybean Yield and Genetics. Enhancing Soybean Productivity for the 21st Century – Strategy and Tactics Conference, Tsukuba, Japan, 2009.
Responses of Soybean Cultivars to Elevated CO2 and O3. WSRC VIII, Beijing, China, 2009
Expanding Genetic Diversity to Increase Soybean Seed Yield. WSRC VIII, Beijing, China, 2009
Soybean Germplasm and Disease Resistance: the Need for Change. APS Annual Meeting, San Diego, CA, 2007.
Genetic Variation for Soybean Response to Elevated CO2 and Ozone Under FACE. American Society of Agronomy annual meetings. Indianapolis, IN. 2006
USDA Soybean Germplasm Collection: Genetic Diversity for An Agronomic Crop. American Society of Agronomy annual meetings. Seattle WA. 2005.
Exchanging, Preserving, Characterizing and Utilizing Germplasm in the USA. World Soybean Research Conference-VII, Iguassu Falls, Brazil. 2004.
Differential Responses of Soybean Genotypes to Elevated CO2 under Field Conditions. American Society of Agronomy annual meetings, Denver, CO. 2003.
Germplasm Utilization to Increase Soybean Yield. China and International Soy Conference and Exhibition, Beijing, China. 2002.
Effective Use of Genetic Resources in Soybean Cultivar Development. India Soy Forum. Indore, India. 2001.
Germplasm: How Do We Capture Value? Soybean Breeders’ Workshop. St. Louis, MO. February 2001
Soybean Germplasm Utilization: Continuing the Story. American Society of Agronomy annual meeting. Minneapolis, MN. 2000.
Soybean Germplasm and Genomics: Challenges and Opportunities. American Phytopathological Society annual meeting. New Orleans, LA. 2000.
Impact of Varietal Patenting on Soybean Breeding .American Soybean Association Board of Directors. St. Louis, MO. 2000.
Soybean Research and Its Relationship to Developing Countries. National Defense University International Fellows, University of Illinois, September, 2000.
Research Opportunities and Priorities for Soybean Germplasm. United Soybean Board Workshop. St. Louis, MO. 2000.
Soybean Research and Its Relationship to Developing Countries. National Defense University International Fellows, University of Illinois, September, 1999.
Preserving and Measuring Genetic Diversity in Soybean. World Soybean Research Conference VI. Chicago, IL. 1999.
Genetic Diversity. Soybean Breeders’ Workshop in St. Louis, MO. February 1999.
Conserving and Utilizing Genetic Diversity to Improve Yield in Soybean. Yunnan Academy of Agricultural Sciences. Kunming, Yunnan, China and Shandong Academy of Agricultural Sciences. Jinan, Shandong, China. 1998.
Analysis and Expansion of Genetic Diversity in the Commercially Used Gene Pools of the U.S. and China. Guangxi Academy of Agricultural Sciences. Nanning, Guangxi, China and Chinese Academy of Agricultural Sciences. Beijing, China. 1998.
The USDA Soybean Germplasm Collection: Collecting, Preserving, and Managing Genetic Diversity. Guangxi Academy of Agricultural Sciences. Nanning, Guangxi, China and Chinese Academy of Agricultural Sciences. Beijing, China. 1998.
The Role of the USDA Soybean Germplasm Collection in U.S. Soybean Breeding. Vietnam Agricultural Science Institute. Hanoi, Vietnam. 1998.
Genetic Diversity: Utilizing the USDA Soybean Germplasm Collection. Center for Soybean Improvement Workshop, University of Georgia, Athens, GA. 1996.
Genetic Diversity in Soybean Breeding - Who Needs It? American Society of Agronomy annual meetings. Indianapolis, IN. 1996.
New Sources of Resistance: Evaluation of Mexican Bean Beetle Resistance in Newly Acquired Soybean Germplasm From China. Soybean Breeders’ Workshop. St. Louis, MO. February 1996.
Identifying Genetic Diversity to Improve Yield. Soybean Breeders’ Workshop. St. Louis, MO. February 1996.
Soybean Improvement: Is There a Chinese Past in Our Future. National Soybean Research Laboratory Seminar March 21, 1995.
Soybeans: Past, Future, and the Chinese Connection. University of Illinois College of Agriculture Alumni Association Annual Meeting March 20, 1993.
Benefits of Cooperative Soybean Germplasm Research for International Agricultural. University of Illinois, College of Agriculture, 1991.
USDA Soybean Germplasm Collections: Past, Present, and Future. Germplasm Symposium honoring Dr. Paul J. Fitzgerald, West Lafayette, IN, June 27, 1990.
Morphological Traits Used to Differentiate Soybean Varieties. International Union for the Protection of New Varieties of Plants (UPOV) Workshop on the Examination of Varieties of Soya Bean. New Carrollton, MD. 1989.
The Relationships Between Seed Filling Period and Yield. Soybean Breeders’ Workshop, St. Louis, February 1988.
Utilization of Exotic Germplasm in Soybeans. Annual meeting of the American Society of Agronomy, Washington, D.C. 1983.
A Brief History and Current Status of the U.S. Soybean Germplasm Collection. Second China/USA Soybean Symposium in Changchun, Jilin, P.R.C., 1983.
Germplasm Collection, Management and Evaluation: The Subgenus: Soja (co-authored with R. L. Bernard). First China/USA Soybean Symposium, Urbana, Illinois, July 1982.
Soybean Germplasm: Evaluation and Utilization. Illinois Soybean Program Operating Board Seminar, Urbana, Illinois, July 1982.