Stan C. Hokanson
- Ph.D. Michigan State University, Plant Breeding and Genetics/Ecology and Evolutionary Genetics (Horticulture)
- M.S. Michigan State University, Plant Breeding and Genetics (Horticulture)
- B.S. Michigan State University
Woody Landscape Plants; Breeding; Genetics
The Woody Landscape Plant Breeding project at the University of Minnesota was initiated in 1954 with the objective of developing new and improved trees and shrubs for USDA plant hardiness zone 4 landscapes. The approach to this objective involves a systematic process of traditional breeding, selection and evaluation. For long-term breeding projects, such as deciduous azalea and weigela, the process assumes the form of recurrent phenotypic selection, in which meritorious individuals from each generation are selected for cultivar potential and/or used as parents in subsequent generations. These selections are based on data collected over multiple years.
For new breeding initiatives, the process begins with a germplasm evaluation of seedlings originating from the northern-most location we can identify. Such evaluations provide a sense for the taxa’s range of diversity for horticultural qualities, and allow us to begin selecting parents for the breeding process.
In recent years, plant patenting, product branding, and marketing activities have intensified in the landscape nursery industry and many new players are now engaged in the plant development process. This transformation has given reason to pause and consider; what is a public, academic institutions unique role in the system? Given the universities primary function to generate and disseminate new knowledge, new cultivars released from a university breeding program should be based on data. Another critical role we play is to generate new knowledge regarding the genetic and physiological processes that control important traits in woody landscape plants. In our program, graduate students often undertake this research as thesis and dissertation projects. The results are typically published in peer-reviewed journals and/or presented at national meetings.
- Ellingson, E., J.M. Bradeen, and S.C. Hokanson. 2018. Eastern hemlock (Tsuga Canadensis (L.) Carriere): Perspectives from its northwestern range limit. Horticultural Reviews, Vol. 46 (in press), Ian Warrington (ed.t) John Wiley and Sons, New York.
- Lewers, K.S., P.R. Castro, J.M. Enns, S.C. Hokanson, G.J. Galletta, D.T. Handley, A.R. Jamieson, M.J. Newell, J.B. Samtani, R.D. Flanagan, B.J. Smith, J.C. Snyder, J.G. Strang, S.R. Wright, C.A. Weber. 2017. 'Flavorfest' strawberry. HortScience 52:1627-1632.
- Iezzoni, A. C. Peace, D. Main, N. Bassil, M. Coe, C. Finn, K. Gasic, J. Luby, S. Hokanson, J. McFerson, J. Norelli, M. Olmstead, V. Whitaker, and C. Yue. 2017. RosBREED 2: Progress and future plans to enable DNA-informed breeding in the Rosaceae. DOI 10.17660/Acta Hort.
- Susko, A.Q., T.A. Rinehart, J.M. Bradeen, and S.C. Hokanson. 2018. An evaluation of two seedling phenotyping protocols to assess pH adaptability in deciduous azalea (Rhododendron sect. Pentanthera G. Don). HortScience 53:268-274.
- Hokanson, S.C. 2010. Lights in the Land of 10,000 Lakes. Pgs. 22-32. Royal Horticultural Society Yearbook of Rhododendrons, Camellias, and Magnolias. Royal Horticultural Society, UK.
- Whitaker, V.M. and S.C. Hokanson. 2009. Breeding Roses for Disease Resistance. Plant Breeding Reviews, 2009, Vol. 31. Pgs. 277-324. Jules Janick (ed.) John Wiley and Sons, New York.
- Zlesak, D.C., K. Zuzek, and S.C. Hokanson. 2013. Gender Inheritance and Identification of Male Sterility Gene RSMS1 in Intra- and Inter-specific Crosses of Dioecious Rosa setigera Michaux. Floriculture and Ornamental Biotechnology. 7:60-64.
- Hokanson, S.C. and S. McNamara. 2013. Can't Always Get What We Want! Finding and Creating Cold for Hardiness Screening at the University of Minnesota. Acta Horticulturae 990:193-202.
- Kusch, W., U. Tschirner, S. McNamara, A.J. David, D. Current, and S.C. Hokanson. 2013. An Evaluation of Alnus (Alder) Germplasm in Five Diverse Nonagricultural Environments in Minnesota (U.S.A.). Acta Horticulturae 990:293-301.
- Krebs, S.L., M.C. Long and S.C. Hokanson. 2011. A garden survey of powdery mildew disease on deciduous azalea species and cultivars. Journal American Rhododendron Society 65:90-97.
- Zlesak, D.C., V.M. Whitaker, S. George and S.C. Hokanson. 2010. Evaluation of roses from the EarthKind® Trials: Black Spot (Diplocarpon rosae Wolf.) Resistance and Ploidy. HortScience 45:1-9.
- Wadl, P.A., X. Wang, J.K. Moulton, S.C. Hokanson, J.A. Skinner, T.A. Rinehart, S.M. Reed, V.R. Pantalone and R.N. Trigiano. 2010. Transfer of Flowering and Kousa Dogwood Simple Sequence Repeats (SSRs) to Selected Cornus (Cornaceae) Species. American Journal of Horticultural Science 135:279-288.
- Meyer, M.H., S.C. Hokanson, S. Galatowitsch, and J.J. Luby. 2010. Public Gardens: Fulfilling the University's Research Mission. HortTechnology 20:522-527.
- Long, M.C., S.K. Krebs, and S.C. Hokanson. 2010. Field and Growth Chamber Evaluation of Powdery Mildew Disease on Deciduous Azaleas. HortScience 45:784-789.
- Whitaker, V.M., T. Debener, A.V. Roberts and S.C. Hokanson. 2010. Unified nomenclature for an international collection of Diplocarpon rosae: races and a standard host differential set. Plant Pathology 59:745-752.
- Whitaker, V.M., J.M. Bradeen, T. Debener, A. Biber and S.C. Hokanson. 2010. Rdr3, a novel locus conferring black spot disease resistance in rose: genetic analysis, LRR profiling, and SCAR marker development. ORIGINAL REPORT Theoretical and Applied Genetics 120:573-585.
- McNamara, S. and S.C. Hokanson. 2010. Cold Hardiness of Weigela (Weigela florida Bunge) Cultivars. Journal of Environmental Horticulture 28:35-40.
- Hokanson, S.C. 2010. Lights in the Land of 10,000 Lakes. Pgs. 22-32. In: Royal Horticultural Society Yearbook of Rhododendrons, Camellias, and Magnolias.
- Whitaker, V.M. and S.C. Hokanson. 2009. Partial resistance to black spot disease in diploid and tetraploid roses: general combining ability and implications for breeding and selection. Euphytica 169:421-429.
- K.S. Lewers, W.W. Turechek, S.C. Hokanson, J.L. Maas, J.F. Hancock, S. Serçe, and B.J. Smith. 2008. Evaluation of Elite Native Strawberry Germplasm for Resistance to Anthracnose Crown Rot Disease Caused by Colletotrichum Species. Jour. Amer. Soc. Hort. Sci. 132:842-849.
- Whitaker, V.M., K. Zuzek, and S.C. Hokanson. 2007. Resistance of 12 rose genotypes to 14 isolates of Diplocarpon rosae Wolf (rose blackspot) collected from eastern North America. Plant Breeding 126:83-88.
- Whitaker, V.M., J.M. Bradeen, and S.C. Hokanson. 2007. Distribution of rose blackspot (Diplocarpon rosae Wolf) genetic diversity in eastern North America using AFLP and implications for resistance screening Journal of the American Society for Horticultural Science 132:534-540.
- Whitaker, V.M., K. Zuzek, J.M. Bradeen, and S.C. Hokanson. 2007. Culturing and long-term storage of virulent races of the rose blackspot pathogen Diplocarpon rosae Wolf. Acta Horticulturae 751:199-205.
- Zuzek, K. and S.C. Hokanson. 2007. Shrub rose breeding at the University of Minnesota. Acta Horticulturae 751:291-298.
- Zlesak, D., K. Zuzek, and S.C. Hokanson. 2007. Rose pollen viability over time at varying storage temperatures. Acta Horticulturae 751:337-343.
Full Curriculum Vitae (PDF)