Published January 1, 2012 | Version v1
Journal article Open

A reference genetic map of C. clementina hort. ex Tan.; citrus evolution inferences from comparative mapping

  • 1. IVIA, Ctr Genom, Valencia 46113, Spain
  • 2. Univ Florida, Ctr Citrus Res & Educ, Lake Alfred, FL 33850 USA
  • 3. Univ Calif Riverside, Dept Bot & Plant Sci, Riverside, CA 92521 USA
  • 4. CIRAD, UMR AGAP, F-34398 Montpellier, France
  • 5. IVIA, Ctr Protecc Vegetal & Biotechnol, Valencia 46113, Spain
  • 6. INRA, UR EPGV, F-91057 Evry, France
  • 7. INRA, UR GEQA, F-20230 San Nicolao, France
  • 8. Cukurova Univ, Fac Agr, Dept Hort, TR-01330 Adana, Turkey
  • 9. CEA, DSV, Inst Genom, CNG, F-91057 Evry, France

Description

Background: Most modern citrus cultivars have an interspecific origin. As a foundational step towards deciphering the interspecific genome structures, a reference whole genome sequence was produced by the International Citrus Genome Consortium from a haploid derived from Clementine mandarin. The availability of a saturated genetic map of Clementine was identified as an essential prerequisite to assist the whole genome sequence assembly. Clementine is believed to be a 'Mediterranean' mandarin x sweet orange hybrid, and sweet orange likely arose from interspecific hybridizations between mandarin and pummelo gene pools. The primary goals of the present study were to establish a Clementine reference map using codominant markers, and to perform comparative mapping of pummelo, sweet orange, and Clementine.

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