College of Agricultural, Human, and Natural Resource Sciences

Department of Horticulture

Nnadozie Oraguzie

Associate Professor/Scientist
(WSU faculty member since 2008)

Areas of Interest

  • Plant breeding and genetics including quantitative genetics, association genetics, population genetics and molecular genetics. My focus is on sweet cherry but I can also research on peach, apple and pear.

Educational Background

  • Ph.D., Plant breeding and Genetics, Lincoln University, New Zealand
  • MSc., Plant breeding and Genetics, University of Ibadan, Nigeria
  • BSc., Botany, University of Jos, Nigeria

Work Experience

  • 1998-2008: Senior Scientist, HortResearch, New Zealand
  • 2006: JSPS Invitation Fellow (for 6 months), National Institute of Fruit Tree Science, Tsukuba, Ibaraki, Japan
  • 2001-2002: STA Fellow, National Institute of Fruit Tree Science, Morioka, Japan
  • 1997-98: Post-Doc, Canterbury University, Christchurch, New Zealand
  • 1988-89: Biology Teacher, Federal School of Art & Science, Ondo, Nigeria

Teaching Responsibilities

  • HORT 503 – Critical Analysis of Scientific Literature (team taught with Drs. Whiting, Moyer, and Keller)

Program Personnel

  • Blessing Athanson, Technician
  • Sue Watkins, Technician
  • Yunyang Zhao (2009-2013)
  • Murali Bellamkonda (2010-2013)
  • Josephine Mgbechi-Ezeri (2012-2014)

Selected Publications


Oraguzie, N.C., E.H.A. Rikkerink, S. Gardiner, and N. de Silva (eds). 2007. Association mapping in plants, ISBN 9780387358444. Springer, New York.


Rikkerink, E.H.A., N.C. Oraguzie, and S.E. Gardiner. 2007. Prospects of association mapping in perennial horticultural crops, p. 249-269. In: N.C. Oraguzie, E.H.A. Rikkerink, S.E. Gardiner, and N. de Silva (eds.). Association mapping in plants. Springer, New York.

Oraguzie, N.C. and P.L. Wilcox. 2007. An overview of association mapping, p. 1-9. In: N.C. Oraguzie, E.H.A. Rikkerink, S.E. Gardiner, and N. de Silva (eds.). Association mapping in plants. Springer, New York.

Oraguzie, N.C., P.L. Wilcox, and E. Rikkerink. 2007. Linkage disequilibrium, p. 10-39. In: N.C. Oraguzie, E.H.A. Rikkerink, S.E. Gardiner, and N. de Silva (eds.). Association mapping in plants. Springer, New York.

Oraguzie, N.C., E. Rikkerink, S. Gardiner, V.G. Bus, A. Currie, R. Rusholme, and R. Volz. 2004.  A review of developments in breeding techniques and gene technology tools for new cultivar development in apple. Recent Advances in Genetics and Breeding 1: 223-257.


Oraguzie, N., P. Alspach, R. Volz, C. Whitworth, C. Ranatunga, R. Weskett, and R. Harker. 2009. Postharvest assessment of fruit quality parameters in apple using both instruments and an expert panel. Postharvest Biology and Technology (in press).

Gharaghani, A., Z. Zamani, A. Talaia, N. Oraguzie, R. Fattahi, H. Hajnajari, C. Wiedow, and S. Gardiner. 2009. Genetic identity and relationships of Iranian apple (Malus x domestica) cultivars and landraces, wild Malus species and representative old apple cultivars based on SSR marker analysis. Genetic Resources and Crop Evolution (in press).

Chagné, D., C.M. Carlisle, C. Blond, R.K. Volz, C.J. Whitworth, N.C. Oraguzie, R.N. Crowhurst, A.C. Allan, R.V. Espley, R.P. Hellens, and S.E. Gardiner. 2007.  Mapping candidate genes for red flesh and foliage colour in apple. BMC Genomics 8:212.

Oraguzie, N.C., R.K. Volz, C.J. Whitworth, H.C.M. Bassett, A.J. Hall, S.E. Gardiner. 2007. Influence of Md-ACS1 allelotype and postharvest season within an apple germplasm collection on fruit softening during cold air storage. Postharvest Biology and Technology 44(3): 212-219.

Oraguzie, N.C., T. Yamamoto, J. Soejima, T. Suzuki, and N. de Silva. 2005. DNA fingerprinting of apple rootstocks using Simple sequence repeats. Plant Breeding 124: 197-202.

Oraguzie, N.C., H. Iwanami, J. Soejima, T. Harada, and A. Hall. 2004.  Inheritance of the Md-ACS1 gene and its relationship to fruit softening in apple (M. x domestica Borkh). Theoretical Applied Genetics 108(8): 1526-1533.

Nnadozie OraguzieOffice: Hamilton Building
24106 N. Bunn Road
Prosser, WA 99350

Phone: 509.786.9271


Department of Horticulture, PO Box 646414, Washington State University, Pullman, WA 99164-6414, 509-335-9502, Contact Us
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