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United States Department of Agriculture

Agricultural Research Service

Title: White Pearl - a Chipping Potato Variety with High Level Resistance to Cold Sweetening

Authors
item Groza, H - UNIV WISCONSIN-MADISON
item Bowen, B - UNVI WISCONSIN-MADISON
item Stevenson, W - WINV WISCONSIN-MADISON
item Sowokinos, Joseph - UNIV MINNESOTA-ST. PAUL
item Glynn, Martin
item Thill, Christian - UNIV MINNESOTA-ST. PAUL
item Peloquin, S - UNIV WISCONSIN-MADISON
item Bussan, A - UNIV WISCONSIN-MADISON
item Jiang, J - UNIV WISCONSIN-MADISON

Submitted to: Potato Journal
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 27, 2005
Publication Date: July 1, 2006
Citation: Groza, H.I., Bowen, B.D., Stevenson, W.R., Sowokinos, J.R., Glynn, M.T., Thill, C., Peloquin, S.J., Bussan, A.J., Jiang, J. 2006. White pearl - a chipping potato variety with high level resistance to cold sweetening. American Journal of Potato Research. 83:259-267.

Interpretive Summary: White Pearl is a chipping variety with high level of resistance to cold sweetening. The cold chipping capacity of White Pearl is better than all current chipping variety, including Atlantic, Snowden and NorValley. White Pearl had low glucose content and good chip color when processed directly after a 7-month storage at 3.3-5.5 degrees C. White Pearl tubers are similar to Snowden with round oval shape, light netting, shallow eyes, white flesh, small to medium size, uniform shape, and practically free of external and internal defects. The yield and specific gravity of White Pearl are medium. White Pearl is similar to Snowden in susceptibility to early blight, pink rot and soft rot, but slight more resistant to common scab. White Pearl vines were susceptible to late blight, but can be managed effectively with fluazinam-based fungicides. White Pearl was more sensitive to blackspot bruise than Atlantic or Snowden at 7.2 degrees C but more resistant at higher temperatures. White Pearl was sensitive to metribuzin (Sencor) but no rimsulfuron (Matrix) or sulfentrazone (Spartan).

Technical Abstract: White Pearl is a chipping variety with high level of resistance to cold sweetening. The cold chipping capacity of White Pearl is better than all current chipping variety, including Atlantic, Snowden and NorValley. White Pearl had low glucose content and good chip color when processed directly after a 7-month storage at 3.3-5.5 degrees C. White Pearl tubers are similar to Snowden with round oval shape, light netting, shallow eyes, white flesh, small to medium size, uniform shape, and practically free of external and internal defects. The yield and specific gravity of White Pearl are medium. White Pearl is similar to Snowden in susceptibility to early blight, pink rot and soft rot, but slight more resistant to common scab. White Pearl vines were susceptible to late blight, but can be managed effectively with fluazinam-based fungicides. White Pearl was more sensitive to blackspot bruise than Atlantic or Snowden at 7.2 degrees C but more resistant at higher temperatures. White Pearl was sensitive to metribuzin (Sencor) but no rimsulfuron (Matrix) or sulfentrazone (Spartan).

Last Modified: 11/26/2014
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