Summary
Using potato parental lines homozygous at a locus or loci controlling resistance to potato leafroll virus (PLRV) can give advantages in the selection of resistant forms. In order to identify homozygous diploid clones their test-cross families were evaluated. All the clones that were test-crossed expressed resistance in primarily- and secondarily-infected plants and etiolated sprouts, and were derived from mating genotypes highly resistant to PLRV. Genotypes from test-cross families varied in resistance to PLRV, and one family was found which had only resistant genotypes, suggesting that the resistant parent of this progeny was homozygous at resistance loci. Evidence was gathered that resistance in some diploid clones may result from resistance to virus multiplication as well as restricted virus transport from leaves to tubers.
Similar content being viewed by others
References
Barker, H., 1987. Multiple components of the resistance of potatoes to potato leafroll virus.Annals of Applied Biology 111: 641–648.
Barker, H. & R.M. Solomon-Blackburn, 1990. Evidence of simple genetic control in potato of ability to restrict potato leaf roll virus concentration in leaves.Theoretical and Applied Genetics 80: 188–192.
Barker, H., R.M. Solomon-Blackburn, J.W. McNicol & J.E. Bradshaw, 1994. Resistance to potato leafroll virus multiplication in potato is under major gene control.Theoretical and Applied Genetics 88: 754–758.
Davidson, T.M.W., 1973. Assessing resistance to leafroll in potato seedlings.Potato Research 16: 99–108.
Derrick, P.M. & H. Barker, 1997. Short and long distance spread of potato leafroll luteovirus: effects of host genes and transgenes conferring resistance to virus accumulation in potato.Journal of General Virology 78: 243–251.
Dziewońska, M.A. & M. Waś, 1994. Diploid genotype DW.84-1457, highly resistant to potato leafroll virus (PLRV).Potato Research 37: 217–224.
Goszczyński, D., 1987. Potato leafroll virus (PLRV)-purification, obtaining of specific serum. (Polish with English summary).Biuletyn Instytutu Ziemniaka 36: 37–41.
Oldser, J. & J.G.T. Hermsen, 1976. Genetics of self-compatibility in dihaploids ofSolanum tuberosum L., 1. Breeding behavior of two self-compatible dihaploids.Euphytica 25: 597–607.
Solomon-Blackburn, R.M. & G.R. Mackay, 1993. Progeny testing for resistance to potato virus Y: comparison of susceptible potato cultivars for use in test-crosses with resistant parents.Potato Research 36: 327–333.
Świezyński, K.M., M.A. Dziewońska & K. Ostrowska, 1993. Resistance to the potato leafroll virus (PLRV) in the progeny of a highly resistant potato clone.Genetica Polonica 34(2): 139–148.
Syller, J., 1988. Detection of potato leafroll virus in intact sprout disks by Enzyme-linked Immunosorbent Assay.Journal of Phytopathology 121: 58–64.
Valkonen, J.P., 1994. Natural genes and mechanisms for resistance to viruses in cultivated and wild potato species (Solanum spp.).Plant Breeding 112: 1–16.
Wilson, C.R. & R.A.C. Jones, 1992. Resistance to phloem transport of potato leafroll virus in potato plants.Journal of General Virology 73: 3219–3224.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Flis, B., Wasilewicz-Flis, I. Progeny tests to identify diploid potato clones homozygous at loci controlling resistance to PLRV. Potato Res 41, 219–228 (1998). https://doi.org/10.1007/BF02358192
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02358192