Molecular Breeding

, Volume 22, Issue 4, pp 555–563 | Cite as

Identification, characterisation and mapping of simple sequence repeat (SSR) markers from raspberry root and bud ESTs

  • M. Woodhead
  • S. McCallum
  • K. Smith
  • L. Cardle
  • L. Mazzitelli
  • J. Graham


Raspberry breeding is a long, slow process in this highly heterozygous out-breeder. Selections for complex traits like fruit quality are broad-based and few simple methodologies and resources are available for glasshouse and field screening for key pest and disease resistances. Additionally, the timescale for selection of favourable agronomic traits requires data from different seasons and environmental locations before any breeder selection can proceed to finished cultivar. Genetic linkage mapping offers the possibility of a more knowledge-based approach to breeding through linking favourable traits to markers and candidate genes on genetic linkage maps. To further increase the usefulness of existing maps, a set of 25 polymorphic SSRs derived from expressed sequences (EST-SSRs) have been developed in red raspberry (Rubus idaeus). Two different types of expressed sequences were targeted. One type was derived from a root cDNA library as a first step in assessing sequences which may be involved in root vigour and root rot disease resistance and the second type were ESTs from a gene discovery project examining bud dormancy release and seasonality. The SSRs detect between 2 and 4 alleles per locus and were assigned to linkage groups on the existing ‘Glen Moy’ × ‘Latham’ map following genotyping of 188 progeny and examined for association with previously mapped QTL. The loci were also tested on a diverse range of Rubus species to determine transferability and usefulness for germplasm diversity studies and the introgression of favourable alleles.


Expressed sequence tags Rubus idaeus Simple sequence repeats Raspberry EST-SSRs QTL 



Amplified fragment length polymorphism


Complementary DNA library


Expressed sequence tag


Randomly amplified polymorphic DNA


Quantitative trait locus


Simple sequence repeat



This work was funded by RERAD, DEFRA and HDC through Horticulture Link. We thank C. Booth and M. Macauley for sequencing and genotyping assistance.


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • M. Woodhead
    • 1
  • S. McCallum
    • 1
  • K. Smith
    • 1
  • L. Cardle
    • 1
  • L. Mazzitelli
    • 1
  • J. Graham
    • 1
  1. 1.Scottish Crop Research InstituteInvergowrie, DundeeUK

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