|Novy, Richard - Rich|
Submitted to: American Journal of Potato Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/14/2003
Publication Date: 1/1/2004
Citation: Novy, R.G., Alvarez, J.M., Corsini, D.L., Nasruddin, A., Radcliffe, E.B., Ragsdale, D.W. 2004. Resistance to pvy, plrv, pvx, green peach aphid, colorado potato beetle, and wireworm in the progeny of a tri-species somatic hybrid.. American Journal of Potato Research. 81 (1):77-78
Technical Abstract: Solanum etuberosum Lindl., a non-tuber-bearing, 1 EBN potato species native to Chile, is notable its high levels of resistance to potato leafroll virus (PLRV), potato virus X and Y (PVX, PVY), and green peach (Myzus persicae) and potato (Macrosiphum euphorbiae) aphids. A clone of this species was somatically hybridized with a haploid Gp. Tuberosum x S. berthaultii hybrid; the somatic hybrid was successfully crossed to potato cultivars to generate 1st and 2nd generation progeny. Evaluation of progeny in greenhouse, cage, and field trials in Minnesota showed the PVY, PLRV, and green peach aphid resistance of S. etuberosum was transmissible to its progeny (Amer. J. of Potato Res. 2002. 79:9-18). Subsequent field evaluations in Idaho also have confirmed the results from MN and additionally have identified resistances to PVX, Colorado potato beetle (Leptinotarsa decemlineata), and wireworm (Limonius spp.) in the progeny. S. berthautii is notable for its resistance to Colorado potato beetle and is the likely source of the resistance observed in the somatic hybrid progeny. It is unclear which of the two wild potato species is contributing to the observed wireworm resistance; such resistance may involve additive contributions from both species. Analysis of the classes and levels of glycoalkoaloids present in the progeny is being conducted to determine their role in the observed insect resistances. This germplasm, with its multiple genetic resistances, should prove useful for potato variety development and molecular analyses.