University of Minnesota
College of Food, Agricultural and Natural Resource Sciences
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Department of Horticultural Science

HORT-IMG-Jim Luby ProfileJim Luby

Fruit Breeding
Department of Horticultural Science


Research Interests

Dr. Luby teaches courses in fruit production and plant breeding. The primary goal of his research is to develop, evaluate, and introduce fruit cultivars with horticultural, disease and pest resistance, and fruit quality characters desired by growers and consumers in Minnesota and surrounding areas. The breeding programs concentrate on apple and grape. Research aims to determine the inheritance of these traits and, where appropriate, map important loci using molecular markers for use in marker assisted breeding. Recent or current examples include traits related to fruit quality and scab resistance in apple, resistance to apple scab, and low temperature responses, disease resistance, sex type and fruit quality in grape derived from wild Vitis riparia.

Teaching/Advising Responsibilities


Tong, C.B.S, S.J. McKay, J.J. Luby, R. Beaudry, C. Contreras, J.F. Nock and C.B. Watkins. 2013. Using mixed-effects models to estimate effects of harvest date and its interactions with postharvest storage regimes on apple fruit firmness. J. Hort. Sci.Biotech 88:29-36.

Schmitz, C.A., M.D. Clark, J.J. Luby, J.M. Bradeen, Y. Guan, K. Evans, B. Orcheski, S.K. Brown, S. Verma, C. Peace. Fruit texture phenotypes of the RosBREED U.S. apple reference germplasm set. 2013. HortScience 48:296-303.

Yue, C., R.K. Gallardo, V. McCracken, J. Luby, J. McFerson, L. Liu and A. Iezzoni. 2012. Technical and Socio-Economic challenges to setting and implementing priorities in North American rosaceous fruit breeding programs. HortScience 47:1320-1327.

Gallardo, R.K., D. Nguyen, V. McCracken, C. Yue, J. Luby, and J.R. McFerson. 2012. An Investigation of trait prioritization in rosaceous fruit breeding programs. HortScience 47:771-776.

Evans, K., Y. Guan, J. Luby, M. Clark, C. Schmitz, S. Brown, B. Orcheski, C. Peace, E. van de Weg, A. Iezzoni. 2012. Large-scale standardized phenotyping of apple in RosBREED. Acta Hort 945:233-238.

Luby, J.J. and D.S. Bedford. 2012. Apples. In: (J.R. Clark and C.E. Finn, eds.) Register of New Fruit and Nut Cultivars List 45. HortScience 46:536-538.

Yao, S., J. Luby, and K. Hummer. 2012. Cold hardiness and foliar disease resistance of North American and Asian Fragaria. J. Amer. Pom. Soc. 66:46-55.

McKay, S.J., J.M. Bradeen, and J.J. Luby. 2011. Prediction of genotypic values for apple fruit texture traits in a breeding population derived from 'Honeycrisp'. J. Amer. Soc. Hort. Sci. 136:408-414.

Telias, A., J. M. Bradeen, J. J. Luby, A.C. Allan, E.E. Hoover. 2011.Towards a healthier and more attractive apple: Regulation of anthocyanin accumulation. Horticultural Reviews 38:357-391.

Hancock, J., C. Finn, J. Luby, A. Dale, P. Callow and S. Serçe 2010. Reconstruction of the strawberry, Fragaria ď‚´ananassa, using native genotypes of F. virginiana and F. chiloensis. HortScience 45:1006-1013.

Iezzoni, A.. C. Weebadde, J. Luby, C. Yue, E. van de Weg, , G. Fazio, ,D. Main, C. Peace, N.Bassil, and J. McFerson. 2010 RosBREED: Enabling Marker-Assisted Breeding in Rosaceae. Acta Hort 859:389-394.

Meyer M.H., S. Hokanson, S. Galatowitsch, J. Luby. 2010. Public Gardens: Fulfilling the University’s Research Mission. HortTechnology 20:522-527.

Luby, J.J. and D.S. Bedford. 2010. Apples. In: (J.R. Clark and C.E. Finn, eds.) Register of New Fruit and Nut Cultivars List 45. HortScience 45:716-719.

Bus V, Rikkerink E, Aldwinckle HS, Caffier V, Durel CE, Gardiner S, Gessler C, Groenwold R, Laurens F, Cam BL, Luby J, Meulenbroek B, Kellerhals M, L. Parisi11, Patocchi A, Plummer K,Schouten HJ, Tartarini S, Weg WEvd. 2009. A proposal for the nomenclature of Venturia inaequalis races. Acta Hort 814:739-746

Yao, S., J.J. Luby, D.K. Wildung. 2009. Strawberry cultivar injury after two contrasting Minnesota winters. HortTechnology 19:803-808.

Garris, A., L. Clark, C. Owens, S.J. McKay, J.J. Luby, K. Mathiason, A. Fennell. 2009. Mapping of photoperiod-induced growth cessation in the wild grape Vitis riparia Michx. using microsatellite markers. J. Amer. Soc. Hort. Sci. 134:261-272.

Luby, J.J. and D.V. Shaw. 2009. Plant breeders’ perspectives on improving yield and quality traits in horticultural food crops. HortScience 44:20-22.

Forsline, P.L., J.J. Luby, and H.S. Aldwinckle. 2008. Fire blight incidence on Malus sieversii grown in New York and Minnesota. Acta Hort 793:345-350.

Luby, J.J., J. F. Hancock, A. Dale and S. Serçe. 2008. Reconstructing Fragaria ď‚´ananassa utilizing wild F. virginiana and F. chiloensis: Inheritance of winter injury, photoperiod sensitivity, fruit size, female fertility and disease resistance in hybrid progenies. Euphytica 163:57-65.

Luby, J.J. and D.S. Bedford. 2008. Apples. In: (J.R. Clark and C.E. Finn, eds.) Register of New Fruit and Nut Cultivars List 44. HortScience 43:1322.

Weebadde, C. K., D. Wang, C.E. Finn, K.S. Lewers, J.J. Luby, J. Bushakra, T.M. Sjulin and J.F. Hancock. 2008. Using a linkage mapping approach to identify QTL for day-neutrality in the octoploid strawberry (Fragaria ×ananassa Duch ex Rozier). Plant Breeding 127:94-101.

Burnes, T.A., J.A. Smith, J. J. Luby, and R.A. Blanchette. 2008.Black currant clonal identity and white pine blister rust resistance. HortScience 43:200-202.


342 Alderman Hall
1970 Folwell Avenue
St. Paul, MN 55108

Phone: 612.624.3453
Website: Superior Blueberry, Cold Hardy Grapes,,