ARS | Publication request: M7 germplasm release: A tetraploid clone derived from Solanum infundibuliforme for use in expanding the germplasm base for french fry processing

Submitted to: American Journal of Potato Research
Publication Type: Germplasm Registration
Publication Acceptance Date: July 20, 2012
Publication Date: August 30, 2012
Citation: Jansky, S.H., Hamernik, A.J., Chung, Y.S. 2012. M7 germplasm release: A tetraploid clone derived from Solanum infundibuliforme for use in expanding the germplasm base for french fry processing. American Journal of Potato Research. 89:448-452.

Interpretive Summary: Over half of the potato crop in the US is composed of russet varieties. These varieties have a narrow genetic background due to a small number of parents that contributed to the russet trait. In this paper, we release a new source of russeting derived from a wild relative of potato. This will increase the gene pool for the genetic improvement of russet cultivars.

Technical Abstract: A new source of russet germplasm has been identified as a parent for processing and fresh market breeding programs. It was derived via bilateral sexual polyploidization following a cross between a diploid cultivated potato and the diploid wild species Solanum infundibuliforme. This clone, designated M7, is tetraploid, highly fertile and crosses readily to germplasm in breeding programs. It produces large tubers with long shape and russet skin and produces a high proportion of offspring with desirable tuber appearance. In addition, M7 expresses resistance to common scab and cold sweetening.