Am. J. Potato Res. (2013) 90:425–439        DOI 10.1007/s12230-013-9316-1

Screening for Chip-Processing Potato Line from Introgression of Wild Species’ Germplasms with Post-Harvest Storage and Chip Qualities

Qingxia Zhao & Baoxie Zhao & Qingquan Zhang & Bin Yu & Lixiang Cheng & Rong Jin & Yuping Wang & Junlian Zhang & Di Wang & Feng Zhang

Published online: 14 May 2013          Potato Association of America 2013

Abstract The processing of potatoes into chips is expanding in China. Thereis a need for new processingcultivars that are well-suited for the local ecological environment. Eleven potato varieties were bred from hybridization and backcrossing between the local cultivated potato varieties (Solanum tuberosum L.) and wild potato species. Lines from different wild species’ germplasms showed that the ability to accumulate reducing sugars was significantly different during low temperature storage (4 °C). A correlation analysis was conducted to determine the correlation coefficient among reducing sugars, acid invertase, free amino acids, chip colors and the content of acrylamide after storage at room and low temperatures. The lines 0706-116, 0737-6 and 0726-205 had low levels of reducing sugars, acrylamide content and acceptable chip colors for potato chip processing. The results indicated that the transfer of wild species’ processing traits into local cultivars by hybridization and continuous backcrossing is an effective potato breeding method and that the wild germplasm resources S.phureja and S.chacoensearesuitable for improving the processing traits of local varieties.

Keywords Backcrossing .Cultivatedvarieties . Hybridization