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Origin of resistance to Plum pox virus in apricot: microsatellite (Ssr) data analysis

Author

Listed:
  • T.N. Zhebentyayeva

    (Department of Horticulture, Clemson University, Clemson SC, 29634 USA)

  • G.L. Reighard

    (Department of Horticulture, Clemson University, Clemson SC, 29634 USA)

  • B. Krška

    (Department of Horticulture, Clemson University, Clemson SC, 29634 USA)

  • V.M. Gorina

    (Department of Horticulture, Clemson University, Clemson SC, 29634 USA)

  • A.G. Abbott

    (Department of Horticulture, Clemson University, Clemson SC, 29634 USA)

Abstract

The objective of this study was to establish the genetic relationship among cultivars commonly used as donors for resistance to Plum pox virus (PPV) in order to identify the putative sources of resistance to PPV. The plant material tested represented the European, Central Asian and Chinese ecogeographical groups of cultivated apricots as well as the wild Dzhungar-Zailij population of Prunus armeniaca L. Forty-eight native accessions as well as the resistant (or tolerant) cultivars Harlayne, Stark Early Orange (SEO), Goldrich, Vestar and two hybrid forms Vestar × SEO (LE 3276) and Velkopavlovická × SEO (LE 2904) were screened by means of SSR analysis. To elucidate genetic relationships among apricot germplasm, a dendrogram was produced using neighbor joining (NJ) analysis of Nei's pair-wise genetic distances over 14 polymorphic SSR markers. On the dendrogram, resistant cultivars were separated into two different clusters suggesting two different sources of resistance to PPV. As was expected from pedigrees, SEO, Vestar, LE 2904 and LE 3276 were grouped together in a cluster adjacent to the European cultivars. Resistant cultivars Harlayne and Goldrich were within another group containing Central Asian apricots and Dzhungar-Zailij form.

Suggested Citation

  • T.N. Zhebentyayeva & G.L. Reighard & B. Krška & V.M. Gorina & A.G. Abbott, 2002. "Origin of resistance to Plum pox virus in apricot: microsatellite (Ssr) data analysis," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 38(SI1-6thCo), pages 117-121.
    • Handle: RePEc:caa:jnlpps:v:38:y:2002:i:si1-6thconfefpp:id:10333-pps
    DOI: 10.17221/10333-PPS
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