Tree Genetics & Genomes

, Volume 4, Issue 1, pp 1–10 | Cite as

EST-SSR genetic maps for Citrus sinensis and Poncirus trifoliata

  • Chunxian Chen
  • Kim D. Bowman
  • Young A Choi
  • Phat M. Dang
  • Madhugiri Nageswara Rao
  • Shu Huang
  • Jaya R. Soneji
  • T. Greg McCollum
  • Fred G. GmitterJr.Email author
Original Paper


The segregation of 141 polymorphic expressed sequence tag-simple sequence repeat (EST-SSR) markers in an F1 intergeneric citrus population was studied to build the first extensive EST maps for the maternal sweet orange and paternal Poncirus genomes. Of these markers, 122 were found segregating in sweet orange, 59 in Poncirus, and 40 in both. Eleven linkage groups with 113 markers in sweet orange, 8 with 45 markers in Poncirus, and 13 with 123 markers in the cross pollinator (CP) consensus of both, were constructed. About 775.8 cM of sweet orange genome and 425.7 cM of Poncirus genome were covered. Through comparison of shared markers, three cases were found where two linkage groups in one map apparently were colinear with one group of the other map; Poncirus linkages Ar1a and Ar1b and consensus linkages CP1a and CP1b, were both collinear with one sweet orange linkage, Sa1, as were sweet orange Sa3a and Sa3b with Poncirus Ar3 and consensus CP3, and sweet orange Sa7a and Sa7b, and consensus CP7a and CP7b with Poncirus Ar7. These EST-SSR markers are particularly useful for constructing comparative framework maps for related genera because they amplify orthologous genes to provide anchor points across taxa. All SSR primers are freely available to the citrus community.


Intergeneric F1 population Functional genome map Microsatellite 



The authors would like to thank Mrs. Margie Wendell and Misty Holt for their excellent technical support. This research was supported in part under Project Number 0110-03I of the Florida Citrus Production Research Advisory Council, Peter McClure, Chairman, and 5200-125 from the California Citrus Research Board.

Supplementary material

11295_2007_83_MOESM1_ESM.pdf (262 kb)
Table 7 Supplementary material one For CHEN’s Manuscript of EST-SSR Maps (PDF 267 kb)


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Chunxian Chen
    • 1
  • Kim D. Bowman
    • 2
  • Young A Choi
    • 1
  • Phat M. Dang
    • 2
  • Madhugiri Nageswara Rao
    • 1
  • Shu Huang
    • 1
  • Jaya R. Soneji
    • 1
  • T. Greg McCollum
    • 2
  • Fred G. GmitterJr.
    • 1
    Email author
  1. 1.University of FloridaCitrus Research and Education CenterLake AlfredUSA
  2. 2.USDA-ARS, USHRLFt. PierceUSA

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