|Sowokinos, Joseph - UNIV OF MINNESOTA|
Submitted to: Red River Valley Potato Growers Association Proceedings
Publication Type: Proceedings
Publication Acceptance Date: February 12, 2003
Publication Date: February 14, 2003
Citation: GLYNN, M.T., SOWOKINOS, J. MARKETING POTENTIAL OF ADVANCED BREEDING CLONES. PROCEEDINGS MINNESOTA AREA II POTATO RESEARCH AND PROMOTION COUNCIL AND THE NORTHERN PLAINS POTATO GROWERS ASSOCIATION REPORTING CONFERENCE. 2003. P. 85-86. Interpretive Summary: The accumulation of reducing sugars during cold storage of potato tubers is a serious and costly problem for producers and processors. The degree to which cultivars accumulate reducing sugars during storage determines their processing and market potential. Cultivars or advanced breeding lines with the lowest amounts of sugars are needed by the chipping industry. Those with intermediate sugar levels are used in french fry production. While those accumulating the higher sugar levels are primarily destined for the fresh or table markets. As part of an on-going program to assist potato breeders in identifying potential markets for promising new cultivars, the effects of storage on sugar levels and processing qualities 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 postharvest storage at 48 degree F (9 degree C) on internal reducing sugar levels and process quality of 71 advanced breeding clones were determined 3 and 7 months of storage. These results can be used by breeders to determine the future market potential of advanced potato germplasm.
Technical Abstract: Maintenance of postharvest market quality during storage is a critical aspect of successful potato production. Consumers and processors have come to demand high product quality year-round. Any new potato cultivar destined for the U.S. market must meet industry standards for processing and market quality. A major part of the efforts of the East Grand Forks Potato Research Worksite is dedicated toward the identification of superior potato germplasm with improved storage characteristics. In this article, the results of recent processing trials of new, promising advanced breeding lines are presented in layman's terms for the benefit of the potato industry. These results will also aid potato breeders in deciding which lines to advance for further refinement.