Theoretical and Applied Genetics

, Volume 113, Issue 4, pp 685–695

The novel, major locus Rpi-phu1 for late blight resistance maps to potato chromosome IX and is not correlated with long vegetation period

Authors

    • Plant Breeding and Acclimatization InstituteResearch Centre Młochów
  • H. Jakuczun
    • Plant Breeding and Acclimatization InstituteResearch Centre Młochów
  • R. Lebecka
    • Plant Breeding and Acclimatization InstituteResearch Centre Młochów
  • W. Marczewski
    • Plant Breeding and Acclimatization InstituteResearch Centre Młochów
  • C. Gebhardt
    • Max Planck Institute for Plant Breeding Research
  • E. Zimnoch-Guzowska
    • Plant Breeding and Acclimatization InstituteResearch Centre Młochów
Original Paper

DOI: 10.1007/s00122-006-0336-9

Cite this article as:
Śliwka, J., Jakuczun, H., Lebecka, R. et al. Theor Appl Genet (2006) 113: 685. doi:10.1007/s00122-006-0336-9

Abstract

Despite the long history of breeding potatoes resistant to Phytophthora infestans, this oomycete is still economically the most important pathogen of potato worldwide. The correlation of high levels of resistance to late blight with a long vegetation period is one of the bottlenecks for progress in breeding resistant cultivars of various maturity types. Solanum phureja was identified as a source of effective late blight resistance, which was transferred to the cultivated gene pool by interspecific crosses with dihaploids of Solanum tuberosum. A novel major resistance locus, Rpi-phu1, derived most likely from S. phureja and conferring broad-spectrum resistance to late blight, was mapped to potato chromosome IX, 6.4 cM proximal to the marker GP94. Rpi-phu1 was highly effective in detached leaflet, tuber slice and whole tuber tests during 5 years of quantitative phenotypic assessment. The resistance did not show significant correlation with vegetation period length. Our findings provide a well-characterized new source of resistance for breeding early and resistant-to-P. infestans potatoes.

Supplementary material

122_2006_336_MOESM1_ESM.doc (43 kb)
Supplementary material 1
122_2006_336_MOESM2_ESM.doc (49 kb)
Supplementary material 2

Copyright information

© Springer-Verlag 2006