Updated June 2012
USDA/ARS Geneticist, Plants (since 1989)
Project Leader, US Potato Genebank – NRSP-6 (since 1989)
Professor, Dept. Horticulture (since April 2002)
Bamberg is Project Leader of the US Potato Genebank located on the UW Peninsular Agricultural Research Station near Sturgeon Bay. NRSP-6 is the US genebank for tuber-bearing Solanum species (potatoes) and is part of the USDA National Plant Germplasm System.
It is supported by all SAES with off-the-top funds from USDA/CSREES, USDA/ARS and UW. The genebank’s mission is to facilitate the improvement of potato through acquisition, classification, preservation, distribution, and evaluation of wild and cultivated potato germplasm.
The Project provides a ready source of Solanum germplasm for US and foreign potato breeders and scientists. It coordinates evaluation of stocks by specialists around the US, and technology, germplasm and research cooperation with other potato genebanks around the world.
It also has a strong program of on-site evaluation and characterization associated with Solanum taxonomy, genetics, physiology, genebank technology and other disciplines through which the exploitation of the germplasm is facilitated. One of the emphases of Bamberg’s program has been collection and research on wild potatoes native to the southwest USA. All these physical and informational resources are cataloged and advertised.
Administration/Service: 80%, Research: 20%
EVALUATION AND GENETICS OF: Late blight, frost tolerance, hormone and reproductive mutants, seed germination, root mass, tuber calcium, nutritionals.
STATUS AND DYNAMICS OF GENETIC DIVERSITY IN THE GENEBANK:
What is the partitioning of diversity and how do our protocols affect diversity within and among genebanks? Can diversity in the wild be predicted and how does it compare to that in genebanks? Focus is within species.
GENEBANK TECHNOLOGY. Gather information to maximizing seed germination, growth and reproduction, field tuberization of wild species, etc.
COLLECTING: Wild potatoes of the southwest USA and associated research
— Steering Committee, Assn. of Potato Intergenebank Collaborators (APIC).
— Editor in Chief, Amer J. Potato Research (AJPR) (since Jan 2003)
— Past Chair of Breed. & Genet Section, Potato Assoc of America (PAA).
— Chairman, Crop Germplasm Committee (CGC) for potatoes.
— National Rep for potato, Plant Germplasm Operations Comm. (PGOC)
— Executive Committee, NRSP-6.
Full peer-reviewed publications (no abstracts or advised theses)
del Rio, Alfonso H., JB Bamberg, Ruth Centeno-Diaz, J. Soto, A. Salas, W. Roca and D. Tay. 2012. Pesticide contamination has little effect on the genetic diversity of potato species. American Journal of Potato Research 89:348-391.
del Rio, Alfonso H., JB Bamberg, Ruth Centeno-Diaz, A. Salas, W. Roca and D. Tay. 2012. Effects of the pesticide Furadan on traits associated with reproduction of wild potato species. American Journal of Plant Sciences 3:1608-1612.
Goyer, A., C Brown, R Knowles, L Knowles and JB Bamberg. 2012. Attacking the acrylamide dilemma by developing low sugar high carotenoid processing potatoes. Potato Progress (Washington State Potato Commission): 12(1):2-3.
Bamberg, JB and JC Miller, Jr. 2012. Comparisons of ga1 with other reputed gibberellin mutants in potato. American Journal of Potato Research 89:142-149.
Bamberg, JB and AH del Rio. 2011. Diversity relationships among wild potato collections from seven “Sky Island” mountain ranges in the Southwest USA. American Journal of Potato Research 88(6):493-499
Bamberg, JB, AH del Rio and J Penafiel. 2011. Successful prediction of genetic richness at wild potato collection sites in Southeastern Arizona. American Journal of Potato Research 88:398-402.
Bamberg, JB and AH del Rio. 2011. Use of native potatoes for research and breeding. Hortscience Proceedings 46(11):1444-1445.
Nitzan, N, RA Quick, WD Hutson, JB Bamberg and CR Brown. 2010. Partial Resistance to Potato Black Dot, Caused by Colletotrichum coccodes in Solanum tuberosum Group Andigena. American Journal of Potato Research 87:502-508.
Bamberg, JB, AH del Rio, CF Fernandez, A Salas, S Vega, C Zorilla, W Roca and D Tay. 2010. Comparison of “remote” versus “easy” in situ collection locations for USA wild Solanum (potato) germplasm. American Journal of Potato Research 87:277-284.
Bamberg, J. B. 2010. Tuber dormancy lasting eight years in the wild potato Solanum jamesii. American Journal of Potato Research 87:226-228.
Kiszonas, Alecia M. and J.B. Bamberg. 2010. Survey of tuber pH variation in potato (Solanum) species. American Journal of Potato Research 87:167-176.
Bamberg, J.B., A. H. del Rio. 2009. Unbalanced bulk of parents’ seed does not cause significant drift in germplasm regeneration of two model potato (Solanum) species populations. American Journal of Potato Research 86:391-397.
Bamberg, J.B., A. H. del Rio and Rocio Moreyra. 2009. Genetic consequences of clonal versus seed sampling in model populations of two wild potato species indigenous to the USA. American Journal of Potato Research 86:367-372.
Nzaramba, M. Ndambe, Lavanya Reddivari, John Bamberg, and J. Creighton Miller, Jr. 2009. Antiproliferative activity and cytotoxicity of Solanum jamesii tuber extracts on human colon and prostate cancer cells in vitro. J. Agric Food Chem. 57:8308-8315.
Hale, AL, L Reddivari, MN Nzaramba, JB Bamberg, and JC Miller Jr. 2008. Interspecific variability for antioxidant activity and phenolic content among Solanum species. Am J Potato Res 85:332-341.
Bamberg, JB and A. del Rio. 2008. Proximity and Introgression of Other Potato Species Does not Explain Genetic Dissimilarity between Solanum verrucosum Populations of Northern and Southern Mexico. Am. J. Pot. Res. 85:232–238.
Bamberg, JB and A. H. del Rio. 2007. The canon of potato science. . . 50 topics in potato science that every potato scientist should know: 1) Genetic diversity and gene banks. Potato Research 50:207-210.
Nzaramba, M. Ndambe, J. B. Bamberg and J. C. Miller, Jr. 2007. Effect of propagule type and growing environment on antioxidant activity and total phenolic content in potato germplasm. Amer J Potato Res 84:323-330.
Hijmans, R., T. Gavrilenko, S. Stephenson, J. Bamberg, A. Salas and D.M. Spooner. 2007. Geographic and environmental range expansion through polyploidy in wild potatoes (Solanum section Petota). Global Ecol. Biogeogr. 16: 485-495.
Bamberg, JB, C. Fernandez, and A. del Rio. 2006. A new wild potato mutant in Solanum stoloniferum Schltdl. lacking purple pigment. Am J. Potato Res 83:437-445.
del. Rio, AH, and JB Bamberg. 2006. Genetic equivalence of putative duplicate germplasm collections held at CIP and US potato genebanks. Am J. Potato Res 83:279-285.
Bamberg, JB. 2006. Crazy Sepal: a new floral Sepallata-like mutant in the wild potato Solanum microdontum Bitter. Am J. Potato Res 83:433-435.
Vega. S. E. J. B. Bamberg and J. P. Palta. 2006. Gibberellin-deficient dwarfs in potato vary in exogenous GA3 response when the ga1 allele is in different genetic backgrounds. Am J. Potato Res 83:357-363.
Bamberg, JB and A del Rio. 2006. Seedling transplant selection does not cause genetic shifts in genebank populations of inbred potato species. Crop Science 46:424-427.
Kuang, H.H., F.S. Wei, M.R. Marano, U. Wirtz, X.X. Wang, J. Liu, W.P. Shum, J. Zaborsky, L.J. Tallon, W. Rensink, S. Lobst, P.F. Zhang, C.E. Tornqvist, A. Tek, J. Bamberg, J. Helgeson, W. Fry, F. You, M.C. Luo, J.M. Jiang, C.R. Buell, and B. Baker. 2005. The R1 resistance gene cluster contains three groups of independently evolving, type I R1 homologues and shows substantial structural variation among haplotypes of Solanum demissum. Plant J 44(1):37-51.
Bamberg, JB, JP Palta and SE Vega. 2005. Solanum commersonii cytoplasm does not improve freezing tolerance in substitution backcross hybrids with frost-sensitive potato species. Am J Potato Res 82:251-254.
Bamberg, JB and A del Rio. 2005. Conservation of Genetic Resources. In: Maharaj K Razdan and Autar K Mattoo (Eds.), 2005. Genetic Improvement of Solanaceous Crops Vol.1: Potato. Science Publishers, Inc., Enfield, USA, 451 pp.
Kiru, S, S Makovskaya, J Bamberg and A del Rio. 2005. New sources of resistance to race Ro1 of the Golden nematode (Globodera rostochiensis Woll.) among reputed duplicate germplasm accessions of Solanum tuberosum L. subsp. andigena (Juz. et Buk.) Hawkes in the VIR (Russian) and US Potato Genebanks. Genet Resources and Crop Evol 52:145-149.
Bamberg, JB and AH del Rio. 2004. Genetic heterogeneity estimated by RAPD polymorphism of four tuber-bearing potato species differing by breeding system. Am J Potato Res 81:377-383.
Brown CR, H Mojtahedi, and JB Bamberg. 2004. Evaluation of Solanum fendleri as a source of resistance to Meloidogyne chitwoodi. Am J Potato Res 81:415-419.
del Rio, AH and JB Bamberg. 2004. Geographical parameters and proximity to related species predict genetic variation in the inbred potato species Solanum verrucosum Schlechtd. Crop Science 44:1170-1177.
Spooner, DM, RG van den Berg, A Rodríguez, J Bamberg, RJ Hijmans, and SI Lara-Cabrera. 2004. Wild potatoes (Solanum section Petota) of North and Central America. Syst Bot Monogr Vol 68. 209 pp.
Vega SE, AH del Rio, JB Bamberg and JP Palta. 2004. Evidence for the up-regulation of stearoyl-ACP (delta9) desaturase gene expression during cold acclimation. Am J Potato Res 81:125-135.
Bamberg, JB and AH del Rio. 2003. Vulnerability of alleles in the US Potato Genebank Extrapolated from RAPDs. Am J Potato Res 80:79-85.
Bamberg, JB, AH del Rio, Z Huaman, S Vega, M Martin, A Salas, J Pavek, S Kiru, C Fernandez and DM Spooner. 2003. A decade of collecting and research on wild potatoes of the southwest USA. Am J Potato Res 80:159-172.
del Rio, AH and JB Bamberg. 2003. The effect of genebank seed increase on the genetics of recently collected potato (Solanum) germplasm. Am J Potato Res 80:215-218.
Hijmans, RJ, M Jacobs, JB Bamberg, and DM Spooner. 2003. Frost tolerance in wild potato species: Assessing the predictivity of taxonomic, geographic, and ecological factors. Euphytica 130:47-59.
Vega SE, AH del Rio, G Jung, JB Bamberg and JP Palta. 2003. Marker-assisted genetic analysis of non-acclimated freezing tolerance and cold acclimation capacity in a backcross Solanum population. Am J Potato Res 80:359-369.
del Rio, AH and J. Bamberg. 2002. Lack of association between genetic and geographic origin characteristics for the wild potato Solanum sucrense Hawkes. Am J Potato Res 79:335-338.
Bamberg, JB, SD Kiru and AH del Rio. 2001. Comparison of reputed duplicate populations in the Russian and US potato genebanks using RAPD markers. Am J Potato Res 78: 365-369.
del Rio, AH, JB Bamberg, Z Huaman, A Salas, and SE Vega. 2001. Association of eco-geographical variables and genetic variation in native wild US potato populations determined by RAPD markers. Crop Science 41:870-878.
Douches, DS, JB Bamberg, W Kirk, K Jastrzebski, BA Niemira, J Coombs, DA Biognin, and KJ Fletcher. 2001. Evaluation of wild Solanum species for resistance to the US-8 genotype of Phytophthora infestans utilizing a fine-screening technique. Am J Potato Res 78:159-165.
Bamberg, JB. 2000. Germination of gibberellin sensitive Solanum (potato) botanical seeds soaked in GA3 and re-dried. Am J Potato Res 77:201-202.
Bamberg, J, C Singsit, AH del Rio and EB Radcliffe. 2000. RAPD analysis of genetic diversity in Solanum populations to predict the need for fine screening. Am J Potato Res 77:275-278.
del Rio AH and JB Bamberg. 2000. RAPD markers efficiently distinguish heterogenous populations of wild potato (Solanum). Genetic Resources and Crop Evolution 47:115-121.
Huaman, Z, R Hoekstra, and J Bamberg. 2000. The intergenebank potato database and the dimensions of available wild potato germplasm. Am J Potato Res 77:353-362.
Vega, SE, J Palta and J Bamberg. 2000. Variability in the rate of cold acclimation and de-acclimation among tuber-bearing Solanum (potato) species. J Am Soc Hort Sci 125:205-211.
Bamberg, JB. 1999. Dependence on exogenous gibberellin for seed germination in Solanum acaule Bitter and other Solanum (potato) species. Am J Potato Res 76:351-355.
Bamberg, JB. 1999. Screening for gibberellin deficiency mutants in Solanum tuberosum ssp. andigena Am J Potato Res 76:321-322.
Bamberg, JB. 1999. Wild potatoes on public lands of the Southwest. US Potato Genebank publication, 4312 Hwy 42, Sturgeon Bay, WI, USA. 6pp.
Chen, Y-K, J Palta and J Bamberg. 1999. Freezing tolerance and tuber production in self and backcross progenies derived from somatic hybrids between Solanum tuberosum L. and S. commersonii Dun. Theor Appl Genet 99:100-107.
Chen, Y-K, J Palta, J Bamberg, H Kim, G Haberlach, and J Helgeson. 1999. Expressions of nonacclimated freezing tolerance and cold acclimation capacity in somatic hybrids between hardy wild Solanum species and cultivated potatoes. Euphytica 107:1-8.
Chen, Y-K, J Bamberg and J Palta. 1999. Expression of freezing tolerance in the interspecific F1 and somatic hybrids of potatoes. Theor Appl Genet 98:955-1004.
Errebhi, M, C Rosen, F Lauer, M Martin, and J Bamberg. 1999. Evaluation of tuber-bearing Solanum species for nitrogen use efficiency and biomass partitioning. Am J Potato Res 76:143-152.
Bamberg, J, J Palta, L Peterson, M Martin, and A Krueger. 1998. Fine screening potato (Solanum) species germplasm for tuber calcium. Am J Potato Res 75:181-186.
Errebhi, M, C Rosen, F Lauer, M Martin, J Bamberg, and D Birong. 1998. Screening of exotic potato germplasm for nitrogen uptake and biomass production. Am J Potato Res 75:93-100.
Palta, JP, JB Bamberg, YK Chen, LS Weiss, and BH Karlsson. 1998. Understanding genetic control of freezing stress resistance using potato species as a model system. In: Plant cold hardiness: Molecular biology, biochemistry and physiology. P. Li and T.H.H. Chen, Eds. New York, Plenum Press, pp 67-75, 40 refs.
del Rio, AH, JB Bamberg, Z Huaman, A Salas, and SE Vega. 1997. Assessing changes in the genetic diversity of potato genebanks. 2. In Situ vs ex situ. Theor Appl Genet 95(1/2):199-204.
del Rio, AH, JB Bamberg and Z Huaman. 1997. Assessing changes in the genetic diversity of potato genebanks. 1. Effects of seed increase. Theor Appl Genet 95(1/2):191-198.
Bamberg, JB, CA Longtine and EB Radcliffe. 1996. Fine screening Solanum accessions for resistance to Colorado potato beetle. Am Potato J 73:211-223.
Bamberg, JB, MW Martin, JJ Schartner, and DM Spooner. 1996. Catalog of potato germplasm – 1996. US Potato Genebank publication, 4312 Hwy 42, Sturgeon Bay, WI, USA. 110 pp.
Vega, SE, JB Bamberg and JP Palta. 1996. Potential for improving freezing stress tolerance of wild potato germplasm by supplemental calcium fertilization. Am Potato J 73:397-409.
Bamberg, J., Z Huaman and R Hoekstra. 1995. International cooperation in potato germplasm. In: International germplasm transfer: Past and present, R. Duncan, Ed. CSSA Special Publication #23. CSSA/ASA/SSSA, Madison, WI. Pp. 177-182
Kleinhenz, MK, JB Bamberg and JP Palta. 1995. Use of stomatal index as a marker to screen backcross populations of two wild potato species segregating for freezing tolerance. Am Potato J 72:243-250.
Spooner, DM, R van den Berg and J Bamberg. 1995. Examination of species boundaries of Solanum series Demissa and potentially related species in series Acaulia and Tuberosa (Solanaceae sect. Petota). Systematic Botany 20:295-314.
Spooner, D, R Castillo, L Lopez, R Pineda, R Leon, A Vargas, M Garcia, and J Bamberg. 1995. Colombia and Venezuela 1992 wild potato (Solanum sect. Petota) germplasm collecting expedition: taxonomy and new germplasm resources. Euphytica 81:45-56.
Spooner, D, R Castillo, T Lopez, R Pinada, R Leon, P Vargas, M Garcia, and J Bamberg. 1995. Colombia and Venezuela 1992 wild potato (Solanum sect. Petota) germplasm collecting expedition: Taxonomy and new germplasm resources. Euphytica 81:45-56.
Bamberg, J. 1995. Screening potato (solanum) species for male fertility under heat stress. Am. J. Potato Res. 72:23-33.
Vega, SE and JB Bamberg. 1995. Screening the US potato collection for frost hardiness. Am Potato J 72:13-21.
Bamberg, JB. 1994. Allelism of endosperm balance number (EBN) in Solanum acaule and other wild potato species. Theor Appl Genet 89:682-686.
Bamberg, JB and DM Spooner. 1994. The United States Potato Introduction Station herbarium. Taxon 43:489-496.
Bamberg, JB, RE Hanneman, Jr, JP Palta, and JF Harbage. 1994. Accessing disomic 4x(2EBN) potato species germplasm via hybridization with Solanum commersonii Dunal. Genome 37:866-870.
Spooner, DM and JB Bamberg. 1994. Potato genetic resources: Sources of resistance and systematics. Proc. of the Symp. “Potato Production: Can we break the chemical dependency?” Am Potato J 71:325-337.
Bamberg, JB, MW Martin and JJ Schartner. 1994. Elite selections of tuber-bearing Solanum species germplasm. US Potato Genebank catalog, 4312 Hwy 42, Sturgeon Bay, WI, 54235, USA.
Bamberg, JB. 1993. Evaluation, introgression of wild genes, and taxonomy. Proceedings, NPGS Research Workshop, June 29-30, Fort Collins, CO.
Bamberg, JB. 1993. IR-1: The Inter-Regional Potato Program–the United States Potato Genebank. Palmer Pubs, Antigo, WI. 6 pp.
Bamberg, JB and RE Hanneman, Jr. 1993. The transmission and yield effects of a gibberellin mutant allele in potato (Solanum tuberosum L.). Potato Research 36:365-373.
Bamberg, JB, JP Palta, LA Peterson, Max W Martin, and AR Krueger. 1993. Screening tuber-bearing Solanum (Potato) germplasm for efficient accumulation of tuber calcium. Am Potato J 70:219-226.
Palta, JP, LS Weiss, JF Harbage, JB Bamberg, and JM Stone. 1993. Molecular mechanisms of freeze-thaw injury and cold acclimation in herbacious plants: merging physiological and genetic approaches. In: Interacting stresses on plants in a changing climate (M. B. Jackson and C. R. Black, Eds.). Berlin, Germany; Springer-Verlag, pp. 659-680.
Stone, JM, JP Palta, JB Bamberg, LS Weiss, and JF Harbage. 1993. Inheritance of freezing resistance in tuber-bearing Solanum species: Evidence for independent genetic control of non-acclimated freezing tolerance and cold acclimation. Proc Natl Acad Sci 90:7869-7873.
Bamberg, JB. 1992. A planting aid for potato seedling transplants. Am Potato J 70:677-681.
Bamberg, JB. 1992. World potato genebank collaborators meet at Braunschweig. Diversity 8(4):22.
Bamberg, JB and RE Hanneman, Jr. 1991. An effective method for culturing pollen tubes of potato. Am Potato J 68:373-379.
Bamberg, JB and RE Hanneman, Jr. 1991. Characterization of a new gibberellin related dwarfing locus in potato (Solanum tuberosum L.). Am Potato J 68:45-52.
Bamberg, JB and RE Hanneman, Jr. 1991. Rapid ploidy screening of tuber-bearing Solanum (potato) species through pollen diameter measurement. Am Potato J 68:279-285.
Bamberg, JB. 1991. World potato genebank collaborators meet at Sturgeon Bay. Diversity 7(3):11-12.
Spooner, DM and JB Bamberg. 1991. Profile: The Inter-Regional Potato Introduction Project (NRSP-6), US Center for Potato Germplasm. Diversity 7(4):32-35.
Spooner, DM, A Contreras and JB Bamberg. 1991. Potato germplasm collecting expedition to Chile, 1989, and utility of the Chilean species. Am Potato J 68:681-690.
Spooner, DM, JB Bamberg, JP Hjerting, and J Gomez. 1991. Mexico, 1988 potato germplasm collecting expedition and utility of Mexican potato species. Am Potato J 68:29-43.
Bamberg, JB and RE Hanneman, Jr. 1990. Allelism of endosperm balance number (EBN) in Mexican tuber-bearing Solanum species. Theor Appl Genet 80:161-166.
Bamberg, JB. 1990. Potato intergenebank collaboration. Diversity 6(3&4):6-7.
Kowalski, SD, JB Bamberg, WM Tingey, and JC Steffens. 1990. Inheritance of polyphenol oxidase in type A glandular trichomes of Solanum berthaultii. J Heredity 81:475-478
Bamberg, JB, RE Hanneman, Jr and LE Towill. 1986. Use of activated charcoal to enhance the germination of botanical seeds of potato. Am Potato J 63:181-189.
Submitted and Accepted
2011. Predicting genetic richness at wild potato collection sites in southeastern Arizona
del Rio, Alfonso John Bamberg and Jose Penafiel. University of Wisconsin-Madison, Dept. of Horticulture, 1575 Linden Drive, Madison, WI 53706; USDA/Agricultural Research Service, US Potato Genebank, 4312 Hwy. 42, Sturgeon Bay, WI 54235; 3Universidad Nacional Agraria La Molina, Peru.
2011. Development of Markers for 9-Stearoyl-ACP-Desaturase (SAD) to Screen for Cold Acclimation. Fei.Li, Liping, Lei Zunguo, Sandra E. Vega, JB Bamberg and JP Palta. Department of Horticulture, University of Wisconsin, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China, The Institute of Potato Guizhou Province, Guiyang, 550006, China
2011. Variation for tuber greening in the wild potato Solanum microdontum. Bamberg, JB. USDA/Agricultural Research Service, US Potato Genebank, Sturgeon Bay, WI
Lozoya-Saldaña, H, AJ Cruz, MT Colinas-León, and JB Bamberg. 2011. Enzimatic activation against (Phytophthora infestans Mont., de Bary) in Solanum species. 2011. American Journal of Potato Research 88:53.
Bamberg, JB and A del Rio. 2011. Diversity relationships in tetraploid wild potato native to the USA. American Journal of Potato Research 88:29.
del Rio, A, JB Bamberg, R Centeno-Diaz, J Soto, A Salas, W Roca, and D Tay. 2011. Microsatellite (SSR) marker analysis to examine the effects of pesticide contamination on the genetic diversity of potato species. American Journal of Potato Research 88:35.
Kumar, S, R Navarre and JB Bamberg. 2011. Phytonutrient Analysis of S. phureja, S. stenotomum and S. andigena Genotypes. American Journal of Potato Research 88:50.
Bamberg, JB and A. del Rio. 2010. Selfing potato species produce robust spontanteous seed increase under floating mesh. American Journal of Potato Research 87:113 (abstract)
del Rio, A. and JB Bamberg. 2010. Inpact of seedling transplant selection on the genetic diversity of genebank populations of outcrossing potato species. American Journal of Potato Research 87:118 (abstract)
Del Rio, AH, JB Bamberg, CJ Fernandez and C Zorrilla. 2009. Update on the comparative assessment of genetic diversity between accessible and remote potato populations. American Journal of Potato Research 86:141 (abstract).
Bamberg, JB, CJ Fernandez, MW Martin and JJ Pavek. 2009. Tuber dormancy lasting eight years in the wild potato Solanum jamesii. American Journal of Potato Research 86:135 (abstract).
Nzaramba, MN, L Reddivari, JB Bamberg and JC Miller, Jr. 2009. Glycoalkaloid levels in Solanum microdontum and S. jamesii accessions: A consideration in parental selection when breeding for high antioxidant activity in potato. American Journal of Potato Research 86:154 (abstract).
Palta, JP, R Gomez, A del Rio, W Roca, JB Bamberg, A Salas, and M Bonierbale. 2008. Supplemental calcium nutrition may have the potential of improving tuber yield of native potatoes in the Peruvian highlands. Am J Potato Res 85:23.
Bamberg. 2008. Genetic comparisons of gibberellin mutants in potato. Am J Potato Res 85:2
Bamberg, M. Martin and J. Palta. 2008. Variation in Solanum species’ tuber potassium accumulation and its implications for human nutrition. Am J Potato Res 85:2
del Rio, A and Bamberg. 2008. Unbalanced bulk of parent’s seed is not detrimental in potato germplasm regeneration. Am J Potato Res 85:28
Bamberg, J. B. 2007. Crazy Sepal: a new floral Sepallata-like mutant in the wild potato Solanum microdontum Bitter. Am J Potato Res. 84:76.es 85:
Bamberg, J.B. A. del Rio and C. Fernandez. 2007. Sampling remote in situ sites of USA wild potato captures more diversity. Am J Potato Res. 84:76.
Bamberg, J. B. and A. Kiszonas. 2007. Variation for tuber acidity among potato species. Am J Potato Res. 84:76.
Bamberg, J.B., JP Palta, M. W. Martin. 2007. Using a wild species, Solanum microdontum, to move high tuber calcium trait to the cultivated potatoes. Am J Potato Res. 84:77.
Busse, JS, JB Bamberg and JP Palta. 2007. Correlation between aerial shoot and tuber calcium accumulation in Solanum genotypes segregating for tuber calcium uptake efficiency. Am J Potato Res. 84:79.
Centeno-Diaz, R., A. Salas-Lopez, A. del Rio, J. Bamberg and W. Roca. 2007. Impact of crop pesticides on the reproductive ability of wild potato species. Am J Potato Res. 84:81.
Vega, S., M. Aziz, J. Bamberg, A. Verma and J Palta. 2007. Screening potato germplasm for carboxypeptidase inhibitor and its potential anticancer properties.
Am J Potato Res. 84:118.Potato R Vega, S, JP Palta and JB Bamberg. 2006. Root zone calcium can modulate GA induced tuberization signal. Am J Potato Res. 83:135.
Vega, S, JP Palta and JB Bamberg. 2006. Exploiting cultivated germplasm to breed for enhanced tuber calcium accumulation. Am J Potato Res. 83:136.
Nzaramba, NM, JB Bamberg , DC Scheuring and JC Miller. 2006. Antioxidant Activity in Solanum Species as Influenced by Seed Type and Growing Location. Am J Potato Res. 83:127.
Lozoya-Saldaña, H, O Barrios, and JB Bamberg. 2006. Phytophthora infestans; races vs genotypes in the Toluca Valley, México. Am J. Potato Res. 83:122.
del Rio, A and JB Bamberg. 2006. Assessment of the genetic structure of in situ populations of wild potato Solanum fendleri eco-geographically dispersed in the Chiricahua mountains, Arizona, USA. 83:108.
Vega S.E., Palta, J.P. and Bamberg, J.B. 2005. Evidence for the mitigation of gibberellin deficiency symptoms by root zone calcium in GA-deficient mutants of potato. Am J Potato Res 82:94.
del Rio, A.H., Bamberg, J.B. and Huaman, Z. 2005. Assessment of putative identical germplasm collections at CIP and US Potato genebanks determined by RAPD and SSR markers. Am J Potato Res 82:66.
del Rio, A.H. and Bamberg, J.B. 2005. Ten years of research at the US Potato Genebank using molecular markers to study efficiency in the acquisition and management of Potato Genetic Diversity. Am J Potato Res 82:65.
Fernandez, C. J. and J.B. Bamberg. 2005. A new Solanum fendleri mutant lacking purple pigment. Am J Potato Res 82:65.
Bamberg, JB and Alfonso del Rio. 2004. Hypothetical obscured recessive traits in tetraploid Solanum estimated by RAPDs. Am J Potato Res 81:45.
Moreyra, R, JB Bamberg and A del Rio. 2004. Genetic consequence of collecting tubers vs seeds of wild potato species indigenous to the USA. Am J Potato Res 81:76.
Bamberg, J.B. and A. del Rio. 2003. Hypothetical obscured recessive traits in tetraploid Solanum estimated by RAPDs. Presented at 87th Annual Meeting of PAA, Spokane, WA, Aug. 10-14, 2003. p. 78.
del Rio, A. and J.B. Bamberg. 2003. Geographical parameters and proximity to related species predict genetic variation in the inbred potato species Solanum verrucosum Schlechtd. Presented at 87th Annual Meeting of PAA, Spokane, WA, Aug. 10-14, 2003. p. 51. (Abstract)
Moreyra, Rocio, J. Bamberg and A. del Rio. 2003. Genetic consequence of collecting tubers vs. seeds of wild potato species indigenous to the USA. Presented at 87th Annual Meeting of PAA, Spokane, WA, Aug. 10-14, 2003. p. 50. (Abstract)
del Rio, A. and J. Bamberg. 2002. Lack of association between genetic and geographic origin characteristics for the wild potato species Solanum sucrense. XXVIth Intl Hort Cong. Abstract S21-P-47. p. 534.
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