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ARS Home » Midwest Area » Madison, Wisconsin » Vegetable Crops Research » Research » Publications at this Location » Publication #353741

Research Project: Maximizing the Impact of Potato Genebank Resources: Development and Evaluation of a Wild Species Genotype Diversity Panel

Location: Vegetable Crops Research

Title: Germplasm with resistance to Potato Virus Y derived from Solanum chacoense: Clones M19 (39-7) and M20 (XD3)

item FULLADOLSA, ANA CRISTINA - Colorado State University
item CHARKOWSKI, AMY - Colorado State University
item CAI, XINGKUI - Huazhong Agricultural University
item Whitworth, Jonathan
item Gray, Stewart
item Jansky, Shelley

Submitted to: American Journal of Potato Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/17/2019
Publication Date: 3/18/2019
Citation: Fulladolsa, A., Charkowski, A., Cai, X., Whitworth, J.L., Gray, S.M., Jansky, S.H. 2019. Germplasm with resistance to Potato Virus Y derived from Solanum chacoense: Clones M19 (39-7) and M20 (XD3). American Journal of Potato Research. 96(4):390-395.

Interpretive Summary: Potato virus Y is a serious disease for the potato industry and is difficult to control with management practices. Therefore, potato breeders are interested in developing cultivars with resistance to this pathogen. A dominant resistance gene is present in the wild potato relative Solanum chacoense. This manuscript describes a resistant S. chacoense clone (M19) and an adapted clone derived from M19 (M20). Both clones carry a dominant PVY resistance gene and are male and female fertile. They are being released for use as parents by breeders interested in developing cultivars with host plant resistance to PVY.

Technical Abstract: Potato virus Y (PVY) causes one of the most serious and widespread diseases in North America. In recent years, the virus has become increasingly difficult to control. Durable dominant genes for resistance to PVY exist in potato germplasm and provide an effective control strategy. This paper describes a Solanum chacoense clone (M19) that is homozygous for a PVY resistance gene. M19 was crossed with a diploid S. tuberosum cultivar to produce an adapted clone carrying the resistance gene. This hybrid clone is named M20. Field trials have confirmed strong resistance in M20. Both M19 and M20 are female and male fertile, so they are being released as sources of PVY resistance for breeding programs.