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United States Department of Agriculture

Agricultural Research Service

Research Project: IMPROVED POTATO MARKET QUALITY THROUGH GERMPLASM PROCESSING EVALUATIONS AND OPTIMIZED STORAGE TECHNOLOGIES

Location: Sugarbeet and Potato Research

Title: Advanced potato breeding clones: Storage and processing evaluation

Authors
item GLYNN, MARTIN
item Sowokinos, Joseph -

Submitted to: Valley Potato Grower Magazine
Publication Type: Trade Journal
Publication Acceptance Date: April 18, 2014
Publication Date: May 1, 2014
Citation: Glynn, M.T., Sowokinos, J. 2014. Advanced potato breeding clones: Storage and processing evaluation. Valley Potato Grower Magazine. 79(231)10-14.

Interpretive Summary: 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 and reconditioning on internal reducing sugar levels and processing quality of 61 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 45oF 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.

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 and reconditioning on internal reducing sugar levels and processing quality of 61 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 45oF 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.

Last Modified: 9/10/2014
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