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United States Department of Agriculture

Agricultural Research Service

Richard L. Bell

Research Horticulturist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
'Gem': a new precocious, productive pear cultivar - (Abstract Only) - (25-Apr-14)
'Gem': a new pear cultivar from the USDA pear breeding program - (Abstract Only) - (24-Apr-14)
Optimization of media composition for in vitro shoot proliferation and root induction of three newly cold-hardy and dwarfing or semidwarfing clonal apple rootstocks - (Peer Reviewed Journal) - (24-Feb-14)
'Gem' pear - (Peer Reviewed Journal)
Bell, R.L., Castagnoli, S., Einhorn, T., Turner, J., Spotts, R., Moulton, G. 2014. 'Gem' pear. HortScience. 49(3):361-363.
Tree fruit breeding for the 21st Century - (Proceedings)
Scorza, R., Callahan, A.M., Dardick, C.D., Bell, R.L., Liu, Z., Srinivasan, C., Hollender, C.A., Vann, C.D., Ravelonandro, M. 2013. Tree fruit breeding for the 21st Century. Aspects of Applied Biology. 119:1-12.
Inheritance of resistance to pear psylla nymphal feeding in pear (Pyrus communis L.) of European origin - (Peer Reviewed Journal)
Bell, R.L. 2013. Inheritance of resistance to pear psylla nymphal feeding in pear (Pyrus communis L.) of European origin. HortScience. 48:425-427.
An exciting new European pear cultivar is coming - (Popular Publication)
Einhorn, T., Castagnoli, S., Turner, J., Bell, R.L. 2012. An exciting new European pear cultivar is coming. Good Fruit Grower. 63(14):25-26.
Needs assessment for future US pear rootstock directions based on the current state of pear production and rootstock research - (Review Article)
Elkins, R., Bell, R.L., Einhorn, T. 2012. Needs assessment for future US pear rootstock directions based on the current state of pear production and rootstock research. Journal of American Pomological Society. 66:153-163.
Resistance of breeding program selections and cultivars to pear psylla - (Abstract Only)
Bell, R.L. 2012. Resistance of breeding program selections and cultivars to pear psylla [abstract]. ASHS Annual Conference. p. 64.
Current status of pear rootstock research: progress and priorities - (Abstract Only)
Elkins, R.B., Bell, R.L., Einhorn, T. 2012. Current status of pear rootstock research: progress and priorities [abstract] ASHS Annual Conference Program. p. 79.
Cropload management and appropriate harvest timing improves final fruit size and fruit quality of US 71655-014, a new fire blight resistant European pear selection - (Abstract Only)
Einhorn, T., Turner, J., Laraway, D., Bell, R.L. 2012. Cropload management and appropriate harvest timing improves final fruit size and fruit quality of US 71655-014, a new fire blight resistant European pear selection [abstract]. ASHS Annual Conference Progam. p. 52.
Host resistance to pear psylla of breeding program selections and cultivars - (Peer Reviewed Journal)
Bell, R.L. 2013. Host resistance to pear psylla of breeding program selections and cultivars. HortScience. 48(2):143-145.
A new attractive, precocious, productive, fire blight resistant pear selection. What more could you ask for? - (Abstract Only)
Turner, J., Castagnoli, S., Einhorn, T., Bell, R.L. 2011. A new attractive, precocious, productive, fire blight resistant pear selection. What more could you ask for? [abstract]. American Society for Horticultural Science Annual Conference Progam. p. 65.
Adventitious shoot regeneration of pear (Pyrus communis L.) cultivars - (Peer Reviewed Journal)
Bell, R.L., Scorza, R., Lomberk, D.F. 2011. Adventitious shoot regeneration of pear (Pyrus communis L.) cultivars. Plant Cell Tissue And Organ Culture. 108(2):229-236.
Transferability of apple EST-SSRs and assessment of genetic diversity in pear genotypes - (Abstract Only)
Zheng, D., Wu, J., Khan, A., Bell, R.L., Korban, S. 2011. Transferability of apple EST-SSRs and assessment of genetic diversity in pear genotypes [abstract]. American Society of Plant Biologists Annual Meeting. p. 15.
Variation of phenotype, ploidy level, and organogenic potential of in vitro regenerated polyploids of Pyrus communis - (Peer Reviewed Journal)
Sun, Q., Sun, H., Bell, R.L., Li, H., Xin, L. 2011. Variation of phenotype, ploidy level, and organogenic potential of in vitro regenerated polyploids of Pyrus communis. Plant Cell Tissue And Organ Culture. 107:131-140.
Susceptibility of pear to European pear sawfly fruit infestation - (Abstract Only) - (01-May-11)
Performance of US 71655-014, a fire blight resistant pear selection from the USA - (Proceedings)
Castagnoli, S., Turner, J., Einhorn, T., Bell, R.L. 2010. Performance of US 71655-014, a fire blight resistant pear selection from the USA. Acta Horticulturae. p. 36.
'Sunrise' pear - (Peer Reviewed Journal)
Bell, R.L., Vanderzwet, T. 2011. 'Sunrise' pear. HortScience. 46:118-120.
Cydonia - (Book / Chapter)
Bell, R.L., Leitao, J. 2011. In: Kole, C., Cydonia, editors. Wild Crop Relatives: Genomic and Breeding Resources. Berlin, Germany: Springer-Verlag. p. 1-16.
Pyrus - (Book / Chapter)
Bell, R.L., Itai, A. 2011. Pyrus. In: Kole, C., editor. Wild Crop Relatives: Genomic and Breeding Resources. Berlin, Germany: Springer-Verlag. p. 147-177.
Performance of US 71655-014, a fire blight resistant pear selection from the USA - (Abstract Only)
Castagnoli, S., Turner, J., Einhorn, T., Bell, R.L. 2010. Performance of US 71655-014, a fire blight resistant pear selection from the USA. XI International Pear Symposium. p. 71.
'Sunrise': A new early maturing fire blight resistant pear cultivar - (Abstract Only)
Bell, R.L., Vanderzwet, T. 2010. 'Sunrise': A new early maturing fire blight resistant pear cultivar. International Horticultural Congress. p. 519.
Pear psylla resistance in breeders' selections - (Abstract Only)
Bell, R.L. 2010. Pear psylla resistance in breeders' selections. HortScience. 45(8):5216.
Effect of polyvinyl alcohol on in vitro rooting capacity of shoots in pear clones (Pyrus communis L.) of different ploidy Reprint Icon - (Peer Reviewed Journal)
Sun, Q., Sun, H., Bell, R.L., Xin, L. 2009. Effect of polyvinyl alcohol on in vitro rooting capacity of shoots in pear clones (Pyrus communis L.) of different ploidy. Plant Cell Tissue And Organ Culture. 99:299-304.
In vitro colchicine-induced polyploid plantlet production and regeneration from leaf explants of the diploid pear (Pyrus communis L.) cultivar, 'Fertility' Reprint Icon - (Peer Reviewed Journal)
Sun, Q., Sun, H., Li, L., Bell, R.L. 2009. In vitro colchicine-induced polyploid plantlet production and regeneration from leaf explants of the diploid pear (Pyrus communis L.) cultivar, 'Fertility'. Journal of Horticultural Science and Biotechnology. 84(5):548-552.
Evaluation of Pyrus germplasm for resistance to pear psylla in the orchard - (Abstract Only)
Bell, R.L. 2009. Evaluation of Pyrus germplasm for resistance to pear psylla in the orchard. HortScience. 44:1176.
Effect of nutrient media on axillary shoot proliferation and preconditioning for adventitious shoot regeneration of pears - (Peer Reviewed Journal)
Bell, R., Srinivasan, C., Lomberk, D. 2009. Effect of nutrient media on axillary shoot proliferation and preconditioning for adventitious shoot regeneration of pears. In Vitro Cellular and Developmental Biology - Plant. DOI 10.1007/s11627-009-9196-8.
Characteristics and transferability of new apple EST-derived SSRs to other Rosaceae species - (Peer Reviewed Journal)
Gasic, K., Yuepeng, H., Kertbundit, S., Shulaev, V., Lezzoni, A., Stover, E.W., Bell, R.L., Wisniewski, M.E., Korban, S. 2009. Characteristics and transferability of new apple EST-derived SSRs to other Rosaceae species. Molecular Breeding. 23:397-411.
Evaluation of potential alternative European pear cultivars for U.S. West Coast growers - (Peer Reviewed Journal)
Elkins, R.B., Turner, J.D., Castagnoli, S., Seavert, C.F., Mitcham, E.J., Biasi, W.V., Colonna, A., Bell, R.L. 2008. Evaluation of potential alternative European pear cultivars for U.S. West Coast growers. Acta Horticulturae. 800:483-489.
Biotechnological approaches to enhance fire blight resistance - (Literature Review)
Bell, R.L. 2012. Biotechnological approaches to enhance fire blight resistance. In: T. van der Zwet, N. Orolaza-Halbrendt, and W. Zeller, editors. Fire blight – history biology, and management. St. Paul, MN. American Phytopathological Society. p. 212-226.
'shenandoah' Pear - (Peer Reviewed Journal)
Bell, R.L. and Vanderzwet, T. 2008. 'Shenandoah' pear. HortScience. 43(7):2219-2221.
Transferability of apple EST-derived SSRs to other Rosaceae species - (Abstract Only)
Gasic, K., Han, Y., Kertbundit, S., Shulaev, V., Lezzoni, A.F., Stover, E.W., Bell, R.L., Wisniewski, M.E., Korban, S.S. 2008. Transferability of apple EST-derived SSRs to other Rosaceae species. Plant and Animal Genome Conference. Book of Abstracts. Vol. 16, Pg. 237.
Evaluation of potential alternative varieties for U.S. west coast pear growers - (Abstract Only)
Elkins, R.B., Turner, J.D., Castagnoli, S., Seavert, C.F., Mitcham, E.J., Biasi, W.V., Colonna, A., Bell, R.L. 2007. Evaluation of potential alternative varieties for U.S. west coast pear growers. Pear International Symposium, May 22-26, 2007, Consolacao, Portugal.
Host Resistance to Pear Psylla Nymphal Feeding in a Diverse Collection of Pyrus Germplasm - (Abstract Only)
Bell, R.L. 2006. Host resistance to pear psylla nymphal feeding in a diverse collection of pyrus germplasm. Entomological Society of America Annual Meeting. Paper No. D0574.
Pears - (Book / Chapter) - (09-Jan-06)
Preconditioning Effect of Shoot Proliferation Medium on Adventitious Shoot Regeneration of Pear - (Abstract Only)
Bell, R.L. 2005. Preconditioning effect of shoot proliferation medium on adventitious shoot regeneration of pear. International Symposium on Biotechnology of Temperate Fruit Crops and Tropical Species. p. 16.
Effect of Leaf Explants Orientation on Adventitious Shoot Regeneration of Pear - (Abstract Only)
Bell, R.L. 2005. Effect of leaf explants orientation on adventitious shoot regeneration of pear. International Symposium on Biotechnology of Temperate Fruit Crops and Tropical Species. p. 15.
Host Resistance in Pyrus to Fabraea Leaf Spot - (Peer Reviewed Journal)
Bell, R.L., Van Der Zwet, T. 2005. Host resistance in pyrus to fabraea leaf spot. HortScience. 40(1):21-23.
Characterization of Modes of Host Plant Resistance to Pear Psylla - (Proceedings)
Bell, R.L., Puterka, G.J. 2004. Characterization of modes of host plant resistance to pear psylla. Acta Horticulturae. 663:183-188.
'shenandoah':a New Fire Blight Resistant Pear Cultivar - (Abstract Only)
Bell, R.L., Miller, D.D., Van Der Zwet, T. 2004. 'shenandoah':a new fire blight resistant pear cultivar. Hortscience, 39:805. 2004
Field Performance of Fire Blight Tolerant Pyrus Communis Selectins in South Carolina - (Abstract Only)
Reighard, G., Ouellette, D., Brock, K., Bell, R.L. 2004. Field performance of fire blight tolerant pyrus communis selectins in south carolina. Meeting Abstract.
Interactions of Genotype and Auxin Affecting Adventitious Regneration of Pear - (Abstract Only)
Bell, R.L. 2003. Interactions of genotype and auxin affecting adventitious regneration of pear. Hortscience 38 (5):750. 2003
Resistance of Pyrus Cultivars and Selections to Fabraea Leaf Spot - (Abstract Only)
Bell, R.L., Van Der Zwet, T. 2003. Resistance of pyrus cultivars and selections to fabraea leaf spot. Hortscience 38 (5):758. 2003
Analysis of Modes of Host Plant Resistance to Pear Psylla - (Abstract Only)
Bell, R.L., Puterka, G.J. 2003. Analysis of modes of host plant resistance to pear psylla. Eucarpia Symposium on Fruit Breeding and Genetics Programme and Abstracts, p. 32, 2003.
Resistance to Pear Psylla Nymphal Feeding of Germplasm from Central Europe - (Other) - (19-May-03)
Resistance to Pear Psylla Nymphal Feeding of Germplasm from Central Europe - (Proceedings)
Bell, R.L. 2003. Resistance to pear psylla nymphal feeding of germplasm from central europe. Acta Horticulturae, 622:343-345, 2003.
Pear - (Book / Chapter)
Chevreau, E., Bell, R.L. 2004. Pear. Book Chapter. CABI Publishing, Wallingford, pp. 543-565.
Basal Nutrient Media Affects Axillary Shoot Proliferation & Preconditioningfor Adventitious Regeneration of Pears - (Abstract Only)
Bell, R.L., Srinivasan, C., Lomberk, D.F. 2002. Basal nutrient media affects axillary shoot proliferation & preconditioningfor adventitious regeneration of pears. Meeting Abstract. 10th IAPTC&B Congress, Program & Abstracts, p.122-A, Abstract P-1354. 2002
Pear transformed with a lytic peptide gene for disease control affects nontarget organism, pear Psylla (Homoptera: Psyllidae) - (Peer Reviewed Journal)
Puterka, G.J., Bochetti, C., Dang, P.M., Bell, R.L., Scorza, R. 2002. Pear transformed with a lytic peptide gene for disease control affects nontarget organism, pear Psylla (Homoptera: Psyllidae). Journal of Economic Entomology. 95(4):797-802.
'blake's Pride' Pear - (Peer Reviewed Journal) - (17-Feb-02)
Transformation of 'beurre Bosc' Pear with the Rolc Gene - (Peer Reviewed Journal) - (25-Jun-99)
Last Modified: 6/11/2013
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