TerraRossa: A mid-season specialty potato with red flesh and skin and resistance to common scab and golden cyst nematode

Authors: SHOCK, C - Oregon State University; BROWN, CR - Retired ARS Employee; SATHUVALLI, V - Oregon State University; CHARLTON, BA - Oregon State University; YILMA, S - Oregon State University; HANE, D - Oregon State University; Quick, Rich; RYKBOST, KA - Oregon State University; JAMES, SR - Oregon State University; MOSLEY, AR - Oregon State University; FEIBERT, E - Oregon State University; Whitworth, Jonathan; Novy, Richard - Rich; STARK, JC - University Of Idaho; PAVEK, M - Washington State University; KNOWLES, R - Washington State University; Navarre, Duroy - Roy; MILLER, JC - Texas A&M University; HOLM, DG - Colorado State University; JAYANTY, SS - Colorado State University; DEBONS, J - Potato Variety Management Institute; VALES, I - Oregon State University; Wang, Xiaohong; HAMLIN, LAUNA - Washington State University

Submitted to: American Journal of Potato Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 4/23/2018
Publication Date: 10/1/2018
Citation: Shock, C., Brown, C., Sathuvalli, V., Charlton, B., Yilma, S., Hane, D., Quick, R.A., Rykbost, K., James, S., Mosley, A., Feibert, E., Whitworth, J.L., Novy, R.G., Stark, J., Pavek, M., Knowles, R., Navarre, D.A., Miller, J., Holm, D., Jayanty, S., Debons, J., Vales, I., Wang, X., Hamlin, L. 2018. TerraRossa: A mid-season specialty potato with red flesh and skin and resistance to common scab and golden cyst nematode. American Journal of Potato Research. 95(5):597-605. https://doi.org/10.1007/s12230-018-9667-8.
DOI: https://doi.org/10.1007/s12230-018-9667-8

Interpretive Summary: Potato cultivars currently available in commercial markets have many positive attributes, but typically have at least some limitations that if improved upon would benefit consumers and the industry. TerraRossa is a new mid-season specialty potato with red skin, red flesh and small-to-medium sized tubers that is a product of the Pacific Northwest Potato Variety (Tri-State) Development Program and developed by scientists at the USDA-ARS, Oregon State University, Washington State University, Texas A&M University, Colorado State University and the University of Idaho. TerraRossa provides the potato industry a high phytonutrient specialty potato with tolerance to common scab and late blight and resistance to golden cyst nematode. Potato chips made from TerraRossa tubers retain their unique red color. TerraRossa has traits that appeal to consumers, protects grower profitability and decreases yield losses due to disease and quality issues.

Technical Abstract: TerraRossa (POR01PG20-12) is a mid-season specialty potato, released by Oregon State University, and is a product of the Northwest Potato Variety (Tri-State) Development Program. This cultivar is unique among commercially available potato cultivars in that plants produce small- to medium-sized smooth, oblong- to long-shaped tubers with red skin and red flesh. TerraRossa tubers have high total antioxidant levels when compared with the ‘All Blue’ purple potato, known for its high antioxidant levels. Sensory evaluations of TerraRossa tubers have shown good culinary attributes following boiling, baking, and microwaving. Potato chips made from TerraRossa tubers retain their unique red color with high antioxidant activity compared to regular chips. TerraRossa could be a good candidate for the organic sector due to its tolerance to common scab (Streptomyces scabies) and tuber late blight (Phytophthora infestans) and its resistance to golden cyst nematode (Globodera rostochiensis). Total tuber yields of TerraRossa are similar to Dark Red Norland and less than Red LaSoda. Average tuber size (136 g) is less than both of the comparison cultivars, reflecting inherent differences in tuber size distribution.