Yan Wang
Assistant Professor, Postharvest Physiology

My research focus is on preserving/improving fruit quality, reducing postharvest losses due to physiological disorders and pathological decays, and lengthening marketability of tree fruit with focusing on sweet cherries and European pears through (1) understanding the metabolic and physiological mechanism of fruit eating quality and storability of the existing and new cultivars; (2) developing postharvest chemical/non-chemical treatments and temperature/atmospheric storage and shipping conditions; and (3) improving horticultural practices.

Mid-Columbia Agricultural Research and Extension Center
Department of Horticulture
3005 Experiment Station
Hood River, OR 97031
United States
(541) 386-2030



  • Mechanism and practical solutions to improve ripening capacity and eating quality of pears.
  • Reducing postharvest losses due to senescence disorders, superficial scald, scuffing, and pathological decays of pears by developing pre- and post-harvest technologies. 
  • Studying alternatives (i.e., low O2, 1-MCP) to the antioxidant (ethoxyquin) for commercially controlling superficial scald of pears without leaving chemical residue in fruit.
  • Ensuring arrival quality of sweet cherries in long-distant export markets by modified atmosphere packaging (MAP).
  • Improving storage/shipping quality of sweet cherries (flavor loss, darkening, pitting, splitting, pedicel browning, decay) by developing pre-harvest and postharvest technologies. 



  • Ph.D. Horticulture, University of Georgia, Athens, GA, USA
  • M.S. Horticulture, Zhejiang University, Hangzhou, PRC
  • B.S. Horticulture, Shandong Agricultural University, Taian, PRC


  • 2011-        Assistant Professor, Dept. of Horticulture, Oregon State University
  • 2002-2011 Postharvest Physiologist, JBT FoodTech Inc.
  • 1996-2001 PhD/Postdoc, Horticulture, University of Georgia
  • 1990-1995 Lecturer, Dept. of Food Science, Shandong Agricultural University
I accept graduate students for Horticulture


Refereed Journal Articles

Xie, X., C. Fang, and Y. Wang. 2017. Inhibition of ethylene biosynthesis and perception by 1-methylcyclopropene and its consequences on chlorophyll catabolism and storage quality of ‘Bosc’ pears. Journal of the American Society for Horticultural Science 142(2):1-9.

Yu, J. and Y. Wang. 2017. The combination of ethoxyquin, 1-methylcyclopropene and ethylene treatments controls superficial scald of ‘d’Anjou’ pears with recovery of ripening capacity after long-term controlled atmosphere storage. Postharvest Biology and Technology 127:53-59.

Wang, Y. 2016. Storage temperature, controlled atmosphere, and 1-methylcyclopropene effects on α-farnesene, conjugated trienols, and peroxidation in relation with superficial scald, pithy brown core, and fruit quality of ‘d’Anjou’ pears during long-term storage. Journal of the American Society for Horticultural Science 141(2):177-185.

Zhao, J., X. Xie, X. Shen, and Y. Wang. 2016. Effect of sunlight-exposure on antioxidants and antioxidant enzyme activities in ‘d’Anjou’ pear in relation to superficial scald development. Food Chemistry 210:18-25.

Wang, Y., X. Xie, and J. Song. 2016. Preharvest aminoethoxyvinylglycine spray efficacy in improving storability of ‘Bartlett’ pears is affected by application rate, timing, and fruit harvest maturity. Postharvest Biology & Technology 119:69-76.

Xie, X., J. Zhao, and Y. Wang. 2016. Initiation of ripening capacity in 1-MCP treated green and red ‘Anjou’ pears and associated expression of genes related to ethylene biosynthesis and perception following cold storage and post-storage ethylene conditioning. Postharvest Biol. Technol. 111:140-149.

Einhorn, T. and Y. Wang. 2016. Characterizing the effect of harvest maturity on ripening capacity, postharvest fruit quality, and storage life of ‘Gem’ pear. J. Amer. Pomol. Soc. 70(1):26-35.

Wang, Y., J. Bai, and L.E. Long. 2015. Quality and physiological responses of late-season sweet cherry cultivars ‘Lapins’ and ‘Skeena’ to modified atmosphere packaging (MAP) during simulated long distance ocean shipping. Postharvest Biol. Technol. 110:1-8.

Xie, X., T. Einhorn, and Y. Wang. 2015. Inhibition of ethylene biosynthesis and associated gene expression by AVG and 1-MCP and consequences on eating quality and internal browning of ‘Starkrimson’ pears. J. Amer. Soc. Hort. Sci. 140(6): 587-596.

Wang, Y. and L.E. Long. 2015. Physiological and biochemical changes relating to postharvest splitting of sweet cherries affected by calcium application in hydrocooling water. Food Chemistry 181:241-247.

Wang, Y. and D. Sugar. 2015. 1-MCP efficacy in extending storage life of ‘Bartlett’ pear is affected by harvest maturity, production elevation, and holding temperature during treatment delay. Postharvest Biol. Technol. 103:1-8.

Xie X., J. Song, Y. Wang, and D. Sugar. 2014. Ethylene synthesis, ripening capacity, and superficial scald inhibition in 1-MCP treated ‘Anjou’ pears are affected by storage temperature. Postharvest Biol. Technol. 97:1-10.

Wang, Y., X. Xie, and L.E. Long. 2014. The effect of postharvest calcium application in hydro-cooling water on tissue calcium content, biochemical changes, and quality attributes of sweet cherry fruit. Food Chemistry 160:22-30.

Wang, Y. and L.E. Long. 2014. Respiration and quality responses of sweet cherries to different atmospheres during cold storage/shipping. Postharvest Biol. Technol. 92:62-69.

Einhorn, T., Y. Wang and J. Turner. 2013. Sweet cherry fruit firmness and postharvest quality of late-maturing cultivars are improved with low rate, single applications of Gibberellic Acid (GA3). HortScience. 48:1010-1017.

Wang, Y. and D. Sugar. 2013. Ripening behavior and quality of modified atmosphere packed 'Doyenne du Comice' pears during cold storage and simulated transit. Postharvest Biol. Technol. 81:51-59.

Wang, Y. and D. Sugar. 2013. Internal browning disorder and fruit quality in modified atmosphere packaged 'Bartlett' pears during storage and transit. Postharvest Biol. Technol. 83:72-82.

Bai, J., R. Graves, and Y. Wang. 2012. Development of chromatography system for simultaneous measurement of gas components in storage atmosphere of horticultural crops. Proc. Fla. State Hort. Soc. (peer-refereed manuscript) 124:235-240.

Kays, S.J., Y. Wang, and W.J. McLaurin. 2005. Chemical and geographical assessment of the sweetness of the cultivated sweet-potato clones of the world. J. Amer. Soc. Hort. Sci. 130:591-597.

Wang, Y. and S.J. Kays. 2003. Analytically directed flavor selection in breeding food crops. J. Amer. Soc. Hort. Sci. 128:711-720.

Wang, Y. and S.J. Kays. 2002. Sweet-potato volatiles chemistry in relation to sweet-potato weevil (Cylas formicarius Summers) behavior. J. Amer. Soc. Hort. Sci. 127:656-662.

Mohammed, M., Y. Wang, and S.J. Kays. 2001. Changes in the volatile chemistry of fresh-cut papaya (Carica papapa L.) during storage. Trop. Agri. 78:268-271.

Kays, S.J., W.J. McLaurin, Y. Wang, P.D. Dukes, J.R. Bohac, and D.M. Jackson. 2001. GA90-16: A nonsweet, staple-type breeding line. HortScience 36:175-177.

Wang, Y. and S.J. Kays. 2001. Effect of cooking method on the aroma constitutes of sweet-potatoes [Ipomoea batatas (L.) Lam.]. J. Food Qual. 24:67-78.

Wang, Y. and S.J. Kays.2000. Contribution of volatile compounds to the characteristic aroma of baked 'Jewel' sweet-potatoes. J. Amer. Soc. Hort. Sci. 125:638-643.

Kays, S.J. and Y. Wang. 2000. Thermally induced flavor compounds. HortScience 35:1002-1012.

Kays, S.J., Y. Wang, and W.J. McLaurin. 1998. Development of alternative flavor types of root and tuber crops as a means of expanding consumption. Trop. Agric. 75:271-275.

Fu, J., P. Zhang, and Y. Wang. 1994. Effects of postharvest calcium and fungicide treatments and storage temperatures on quality and decay of peach fruit (cv. 'Feicheng') during storage/shipping. Food Sci. 12:50-52.

Wang, Y. 1993. Effects of ethylene and CO2 on stalk growth, leaf senescence and abscission of  headed Chinese cabbage (Brassica campestris var. pekinensis) during a simulated long-term ventilation storage. Food Sci. 10:50-53.

Wang, Y.,  P. Zhang, J. Fu, and L. Zhang.  1993.  IAA-oxidase and peroxidase activities in stalk, inner, middle, and outer leaves of headed Chinese cabbage (Brassica campestris var. pekinensis) during long-term storage. J. Shandong Agri. Univ. 27:37-41.

Wang, Y. 1993. Physiological mechanism of varied storability among eight headed cultivars of Chinese cabbage (Brassica campestris var. pekinensis). J. Shandong Agri. Univ. 24:37-41.

Zhang, P., J. Fu and  Y. Wang. 1992. Effects of ethylene absorbent and modified atmosphere packaging on softening and quality of kiwifruit during storage. Food Sci. 7:41-43.

Shang, Q., P. Li, D. Yang, C. Chen, C. Li, and Y. Wang. 1992. Effect of grafting on disease resistance, plant growth, and fruit quality of Watermelon (Citrullus lanatus) grown in greenhouse (II). J. Shanxi Agri. Univ. 12(1): 33-36.

Peer-Reviewed Proceedings Articles

Mandava, B. and Y. Wang. 2016. Effect of Brassinosteroids on cherry maturation, firmness and fruit quality. III Balkan Symposium on Fruit Growing. Acta Hort. 1139:451-458.

Wang, Y., X. Xie, and D. Sugar. 2015. Effects of harvest maturity, production year, storage temperature, and post-storage ethylene conditioning on ripening capacity of 1-MCP treated ‘d’Anjou’ pears. Acta Hort. 1094:573-578.

Wang, Y., S. Castagnoli, and D. Sugar. 2015. Integrating IAD index into the current firmness-based maturity assessment of European pears. Acta Hort. 1094:525-532.

Wang, Y. and T. Einhorn. 2015. Harvest maturity and cropload influence postharvest quality deterioration of sweet cherry (Prunus avium). Acta Hort. (in press)

Wang, Y. and T. Einhorn. 2015. Optimizing pre-harvest application rate of Gibberellic Acid (GA3) and Homobrassinolide (HBR) to improve harvest and shipping quality of sweet cherry (Prunus avium). Acta Hort. (in press)

Kays, S.J. and Y. Wang. 2002. Sweetpotato quality: its importance, assessment and selection in breeding programs. Acta Hort. 583:187-193.

Wang, Y., R.J. Horvat, R. White, and S.J. Kays. 1998. Influence of postharvest curing treatment on the synthesis of the volatile flavor components in sweetpotato.  Acta Hort. 464:207-212.

Trade Journal Articles

Warner, G. and (Y. Wang). 2016. Plant growth regulators in pears. Good Fruit Grower 67(3):14-15.

Hansen, M. and (Y. Wang). 2015. Optimizing cherry quality during export - Match MAP packaging to cultivars of cherry. Good Fruit Grower 66(10): 26-27.

Hansen, M. and (Y. Wang). 2015. Calcium improves cherry export quality. Good Fruit Grower 66(10): 24-25.

Warner, G. and (Y. Wang). 2014. Improving cherry quality. Good Fruit Grower 65(2): 28.

Wang, Y. 2012. MAP could extend Bartlett season, it might also reduce quality problems in export market. Good Fruit Grower 63(13): 46-47.

Wang, Y. and Z. Zhang. 1994. Postharvest handling of table grape. World Agri. 2:32-33.

Wang, Y. and Q. Shang. 1993. Modified atmosphere package (MAP) for postharvest preservation of fresh fruits and vegetables. Food and Machinery 2:32-33.

Wang, Y., P. Zhang and J. Fu. 1992. High relative humidity storage of fruit and vegetable. Food and Machinery 4:42-43.

Outreach and Extension

The goal of my outreach program is to effectively transfer research-based information and provide expertise concerning postharvest fruit quality and disorders and postharvest technologies to Oregon pear and sweet cherry industries through collaborations with researchers, extension personnels, packers, and growers.

Awards and Honors

International IPM Award of Recognition for StopBMSB program. Member of BMSB SCRI CAP team. 8th International IPM Symposium. Salt Lake City, UT. Mar. 24, 2015.

Outstanding Research Award – Government of Shandong Province, China, 1994

Technical Advancing Award – Government of Shandong Province, China, 1993

Outstanding Research Award - Government of Beijing, China, 1992