|Sowokinos, Joseph - UNIVERSITY OF MN|
Submitted to: Valley Potato Grower Magazine
Publication Type: Trade Journal
Publication Acceptance Date: February 27, 2006
Publication Date: April 1, 2006
Citation: Glynn, M.T., Sowokinos, J.R. 2006. Advanced potato clones with increased cold sweetening resistance (scr) (year 2004-2005). Valley Potato Grower Magazine. 71(167):12-15. Technical Abstract: The accumulation of reducing sugars during cold storage of potato tubers is a serious and costly problem for producers and processors. Most, but not all, currently used potato cultivars are susceptible to Acold sweetening@ and are therefore stored at warmer temperatures that can accelerate disease progression and sprouting. A major goal of potato breeding programs is the development of new potato lines that are resistant to cold sweetening. As part of an on-going program to assist potato breeders in identifying promising new cultivars, the effects of storage temperature on processing quality have been determined for a number of advanced lines submitted by both federal and non-federal potato breeding programs. In this report, the effects of storage temperature on internal reducing sugar levels and processing quality of 107 advanced breeding clones submitted by U.S. and Canadian public breeding programs were determined immediately after harvest and after 3 and 7 months of storage at 38, 42 and 45 degrees F are described. Storage performance of individual clones can be used to determine potential future processing potential. These results can also be used by breeders to determine which advanced lines should undergo further development in their programs.