- Ph.D. Genetics, University of California, Davis, 1977
- M.S., Botany, Miami University, 1974
- B.S., Biology, Baldwin-Wallace College, 1972
- Highbush blueberry breeding and genetics
- Our major goals are to improve fruit quality, increase disease resistance, expand soil
adaptations and delay bloom in the highbush blueberry through the use of wild species, in
particular Vaccinium darrowi. A molecular map has been developed of an interspecific
hybrid using RAPD markers to answer questions about inheritance patterns and facilitate
the transfer of useful traits.
- Molecular mapping of the strawberry genome
- A new project has been initiated to develop a molecular based map of Fragaria x.
ananassa. Emphasis will be placed on tagging the genes associated with day-neutrality. A
number of native sources of F. virginiana will be examined to determine how many genes are
involved in multiple cropping and whether more than one source for useful genes exists.
- Role of polyploidy in plant evolution
- We have spent a considerable amount of time investigating the role of polyploidy in the
evolution of natural populations. Our most active interests concern the influence of
tetrasomic inheritance on the distribution of genetic load and how this ultimately
influences outcrossing rates.
- Reconstruction of the cultivated strawberry,
Fragaria x. ananassa
- A major emphasis of my research program is to expand the germplasm base of the
cultivated strawberry. Fragaria x ananassa is an interspecific hybrid of two species,
Fragaria chiloensis and F. virginiana, but only a limited sample of native clones are in
it's ancestry. In conjunction with Adam Dale at the Horticultural Research Institute of
Ontario and Jim Luby at the University of Minnesota, we have evaluated several thousand
native clones of Fragaria and have crossed the most elite amongst themselves and with
cultivars representing the major breeding programs in North America. The first group of
these crosses are currently being field evaluated.
- Environmental biosafety of GE crops
- We are interested in developing risk assessment protocols for the safe
deployment of transgenic crops. Our major emphasis is the possible
evolutionary impact of gene flow from transgenic crops to their wild
progenitors.
-
Honors
Outstanding Graduate Educator
Award - American Horticultural Society -1999 Fulbright Fellowship --
Universidad de Talca, Talca, Chile - 1993
Books:
Hancock, J.F. (ed). 2007.
Temperate Fruit Breeding: Germplasm to genomics. Kluwer Academic Publishing (In
press)
Hancock, J.F. 2004. Plant
Evolution and the Origin of Crop Species. Second Edition. CAB International, Wallingford, UK.
Hancock, J. F. 1999.
Strawberries. CAB International, Wallingford, UK.
-
Luby J.J, A. Dale, J.
F. Hancock and S. Serce. 2007. Reconstructing Fragaria´ananassa utilizing
wild F. virginiana and F. chiloensis: Inheritance of winter injury,
photoperiod sensitivity, fruit size, gender, female fertility and disease
resistance in hybrid progenies. Euphytica (In press)
-
Hancock J. F., P.
Callow, S. Serce, E. Hanson and R. Beaudry. 2007. Effect of cultivar,
controlled atmosphere storage and fruit ripeness on the long term storage of
highbush blueberries. HortTechnology (In press)
-
Weebadde CK, D. Wang,
C.E. Finn, K.S. Lewers, J.J. Luby, J. Bushakra, T.M. Sjulin and J.F.
Hancock. 2007. Mapping the genes associated with day-neutrality in
strawberry. Plant Breeding (In press)
-
Smith B.J., S.C.
Hokanson, J.F. Hancock, S. Serce, K.S. Lewers, J.L. Maas and W.W. Turechek.
2007. Evaluation of elite native strawberry germplasm for resistance to
anthracnose crown rot caused by Colletotrichum species. J. Amer. Soc. Hort
Sci. (In press)
-
Soltis, D.E., P. Soltis,
D.W. Schemske, J.F. Hancock, Thompson J.N., B.C. Husband and W.S. Judd.
2007. Autopolyploidy in angiosperms: Have we grossly underestimated the
number of species. Taxon 56: 13-30.
-
Hanson, E.J., S.F.
Berkheimer and J.F. Hancock. 2007. Seasonal changes in the cold hardiness of
the flower buds of highbush blueberry with varying species ancestry. J. Am.
Pom.Soc. 61: 14-18.
-
Dale, A. and J. F.
Hancock. 2006. Highbush cultivar trial in Ontario, Canada. Inter. J. Fruit
Sci. 5: 73-76.
-
Gepts, P. and J. F.
Hancock. 2006. The future of plant breeding. Crop Science 46: 1630 1634.
-
Hancock, J.F. 2006.
Introduction to the Symposium Who will train Plant Breeders. HortScience
41: 28-29.
-
Schilder, A.M.C., E. J.
Hanson and J.F. Hancock. 2006. An integrated approach to disease control in
blueberries in Michigan. Acta Hort. 715: 481-488.
-
Hancock, J.F. 2006.
Northern highbush blueberry breeding. Acta Hort. 715: 37-40.
-
Hancock, J.F. 2006.
California public strawberry breeders: A perfect marriage of genetics and
culture. HortScience 41: 12-13.
-
Hancock, J.F. 2006.
Highbush blueberry breeders: Collected insights. HortScience 41: 20-21.
-
Qu, L.P., X.P. Wang, Y.
Chen and J.F. Hancock. 2005. Commercial seed lots exhibit reduced seed
dormancy in comparison to wild seed lots of Echinacea purpurea. HortScience
40:1843-1845.
-
Dale, A. and J.F.
Hancock. 2005. Highbush blueberry cultivar trial in Ontario, Canada. Int. J.
Fruit Sci. 5:73-76.
-
Hancock, J.F. 2005.
California public strawberry breeders: A perfect marriage of genetics and
culture. HortScience 41:16-17.
-
Hancock, J.F. 2005.
Highbush blueberry breeding: Domestication, innovation and the liberal use
of wild germplasm. HortScience 41: 20-21.
-
Retamales, J.B. and J.F.
Hancock. 2005. Proceedings of the Colloquium: Research Advances on the
native Chilean Strawberry [Fragaria chiloensis (L.)Duch.] held at the
Faculty of Agricultural Sciences, Universidad de Talca, Talca, Chile 30
October 2002 Introduction. HortScience 40:1632-1632.
-
Hancock, J.F., C.A.
Drake and P.W. Callow. 2005. Genetic improvement of the Chilean native
strawberry, Fragaria chiloensis. HortScience 40:1644-1645.
-
Carrasco, B., J. F.
Hancock, R.E. Beaudry and J. Retamales. 2005. Chemical composition and
inheritance patterns of aroma in Fragaria x ananassa and F. virginiana
progenies. HortScience 40: 1649-1650.
-
Hancock, J. F. 2005.
Native strawberry germplasm in the Americas. In: S. Khanizadeh (ed). Our
Strawberries / Les Fraisiers de chez nous. Publishing Program PWGSC and
Agriculture and Agri-Food Canada.
-
Hancock, J.F.
2005. Contributions of domesticated plant studies to our
understanding of plant evolution. Ann. Bot. 96:953-963.
-
Patrica, C.A.
and J. F. Hancock. 2005. Field evaluation of strawberry genotypes
for tolerance to black root rot on fumigated and non-fumigated soil.
J. Amer. Soc. Hort. Sci. 130: 688-693.
-
Houghton-Thompson, J., H.H. Prince, J.J. Smith and J. F. Hancock.
Evidence of hybridization between Lythrum salicaria (Purple
Loosestrife) and L. alatum (Winged Loosestrife) in North America.
Ann. Bot. 96:877-885.
-
Serce, S. and
J.F. Hancock. 2005. Inheritance of day-neutrality in octoploid
species of Fragaria. J. Amer. Soc. Hort. Sci. 130:580-585.
-
Hancock, J.F.,
S. Serçe, C.M. Portman, P.A. Callow and J.J. Luby. 2004. Taxonomic
variation among North and South American subspecies of Fragaria
virginiana and F. chiloensis. Can. J. Bot. 82: 1632-1644.
-
Serçe, S. and
J.F. Hancock. 2004. The temperature and photoperiod regulation of
flowering in Fragaria chiloensis, F. virginiana, and F. ananassa
genotypes. Scientia Hort. 103: 167-177.
-
Hancock, J. F.
2003. A framework for assessing the risk of transgenic crops.
BioScience 53:512-519.
-
Serçe, S. and
J.F. Hancock. 2003. Assessment of day-neutral scoring methods in
strawberry families grown in greenhouse and field environments.
Turk. J. Agric. For. 27:191-198.
-
Finn, C. E., J.
F. Hancock, T. Mackey and S. Serce. 2003. Genotype x environmental
interactions in highbush blueberry (Vaccinium sp. L.) Families grown
in Michigan and Oregon. J. Amer. Soc. Hort. Sci. 128:196-200.
-
Hancock, J. F.,
P. W. Callow, S. Serçe and P. Q. Phan. 2003. Variation in the
horticultural characteristics of native Fragaria virginiana and F.
chiloensis from North and South America. J. Amer. Soc. Hort. Sci.
128:201-208.
-
Hancock, J.F.,
R. Beaudry and J. Luby and. 2003. Fruits of the Ericaceae. In:
Encyclopedia of Temperate Fruit Crops. Elsevier, Inc.
-
Hancock, J. F.
and K. Hokanson. 2003. Invasiveness of transgenic vs. exotic plant
species: How useful is the analogy. In: S. H. Strauss and H. D.
Bradshaw (eds.). The Bioengineered Forest: Challenges for Science
and Technology. RFF Press, Corvallis, Oregon.
-
Draper, A. and
J. Hancock. 2003. Florida 4B: Native blueberry with exceptional
breeding value. J. Amer. Pom. Soc. 57:138-141.
-
Serce, S. and
J. F. Hancock. 2003. Assessment of day-neutrality scoring methods in
strawberry families grown in greenhouse and fields environments.
Turkish Journal of Agriculture and Forestry 27:191-198.
-
Hancock, J. F.,
J. J. Luby, A. Dale, P. W. Callow, S. Serce and A. El-Shiek. 2002.
Utilizing wild Fragaria virginiana in strawberry cultivar
development: Inheritance of photoperiod sensitivity, fruit size,
gender, female fertility and disease resistance. Euphytica 126:
177- 184.
-
Qu, L. and J.F.
Hancock. 2002. Pitfalls of genetic analysis using a doubled haploid
backcrossed to its parent. Theor. Appl. Genet. 105: 392-396.
-
Owens, C.L., M.
F. Thomashow, J.F. Hancock and A.F. Iezzoni. 2002. Identification of
CBF orthologs in sour cherry and strawberry and the heterologous
expression of CBF1 in strawberry. J. Amer. Soc. Hort. Sci. 127:
489-494.
-
Serce, S. and
J.F. Hancock. 2002. Performance of strawberry germplasm for
resistance to the two‑spotted spider mite. HortScience 37: 593 ‑ 594
-
.A. M. Connor, J. J. Luby, C. B. S. Tong, C. E. Finn and J. F. Hancock. 2002. Genotypic and
environmental variation in antioxidant activity, total phenolic content,
and anthocyanin content among blueberry cultivars. J. Am. Soc. Hortic.
Sci. 127: 89-97.
-
Hancock, J.F. 2002.
The strawberry in North America: Past lessions and future promise. In:
S.C. Hokanson and A.R. Jamieson (eds.). Strawberry research to 2001.
ASHS Press, Alexandria , VA.
-
Serce, S., P.W.
Callow, H. Ho and J.F. Hancock. 2002. High temperature effects on CO2
assimilation rate of Fragaria x ananassa, F. chiloensis and F.
virginiana. J. Amer. Pom. Soc. 56:57-62.
-
Conner, A.M., J.J.
Luby, J.F. Hancock, S. Birkheimer and E.J. Hanson. 2002. Changes in
fruit antioxidant activity among blueberry
cultivars during cold‑temperature storage. Agricul. Food Chemistry
50:893-898.
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