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United States Department of Agriculture

Agricultural Research Service

Title: Willamette: A Chipping Cultivar with High Yield and Specific Gravity, Low Incidence of Hollow Heart and Brown Center, and Suitability for Fresh-Market Usage

Authors
item Mosley, A. - RETIRED OR ST U CORVALLIS
item Yilma, S. - OR STATE UNIV, CORVALLIS
item Hane, D. - OR STATE UNIV, HERMISTON
item James, S. - OR STATE UNIV, MADRAS
item Rykbost, K. - RETIRED OR ST KLAMATH FAL
item Shock, C. - OR STATE UNIV, ONTARIO
item Love, S. - UNIV OF ID, ABERDEEN
item Corsini, D. - RETIRED USDA ARS ABERDEEN
item Pavek, J. - RETIRED USDA ARS ABERDEEN
item Thornton, R. - RETIRED WA ST U PULLMAN
item Charlton, B. - OR ST U KLAMATH FALLS
item Eldredge, E. - OR STATE UNIV ONTARIO
item Novy, Richard
item Pavek, M. - WA STATE UNIV, PULLMAN
item Knowles, N. - WA STATE UNIV, PULLMAN
item Whitworth, Jonathan
item Brown, Charles
item Stark, J. - UNIV OF ID ABERDEEN
item Vales, M. - OR STATE UNIV, CORVALLIS

Submitted to: American Journal of Potato Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: August 3, 2007
Publication Date: March 1, 2008
Repository URL: http://riley.nal.usda.gov/nal_web/digi/submission.html
Citation: Mosley, A.R., Yilma, S., Hane, D.C., James, S.R., Rykbost, K.A., Shock, C.C., Love, S.L., Corsini, D.L., Pavek, J.J., Thornton, R.E., Charlton, B.A., Eldredge, E.P., Novy, R.G., Pavek, M.J., Knowles, N.R., Whitworth, J.L., Brown, C.R., Stark, J.C., Vales, M.I. 2008. Willamette: A Chipping Cultivar with High Yield and Specific Gravity, Low Incidence of Hollow Heart and Brown Center, and Suitability for Fresh-Market Usage. American Journal of Potato Research 85(1): 85-92

Interpretive Summary: The potato cultivar ‘Willamette is a high-yielding potato cultivar suitable for the production of potato chips as well as for fresh-market usage. It exhibits high starch content and is notable for its resistance to hollow heart and brown center, which are diseases that can make tubers unsuitable for fresh or processing use. It was released in 2003 by the Agricultural Experiment Stations of Idaho, Oregon, and Washington and the United States Department of Agriculture-Agricultural Research Service.

Technical Abstract: Willamette (AO91812-1), a high-yielding, round, white-skinned variety with good chipping qualities, was released in 2003 by the Oregon, Idaho and Washington Agricultural Experiment Stations and the United States Department of Agriculture-Agricultural Research Service. Willamette was selected at Powell Butte, Oregon in 1993 from a cross between NDA2031-2 and A86463-3. Willamette vines are relatively large, vigorous and medium-late in maturity. Yields of Willamette were higher than Atlantic across a number of western states. Willamette exhibited fewer internal tuber defects than Atlantic tubers, but had similar levels of external defects. Willamette chips well from 10oC storage but not from 4.4oC. Tuber specific gravity is comparable to that of Atlantic. Willamette tubers contain slightly lower levels of total glycoalkaloids and vitamin C than those of Atlantic, but have similar levels of dry matter, protein, dextrose and sucrose. Compared to Atlantic, Willamette shows more resistance to Verticillium wilt and PLRV, similar susceptibility to early blight, foliar late blight and Erwinia soft rot, and greater susceptibility to tuber late blight and common scab.

Last Modified: 9/20/2014