Theoretical and Applied Genetics

, Volume 94, Issue 3, pp 409–418

Construction of a composite sorghum genome map and comparison with sugarcane, a related complex polyploid

  • P. Dufour
  • M. Deu
  • L. Grivet
  • A. D’Hont
  • F. Paulet
  • A. Bouet
  • C. Lanaud
  • J. C. Glaszmann
  • P. Hamon

DOI: 10.1007/s001220050430

Cite this article as:
Dufour, P., Deu, M., Grivet, L. et al. Theor Appl Genet (1997) 94: 409. doi:10.1007/s001220050430

Abstract

 A sorghum composite linkage map was constructed with two recombinant inbred line populations using heterologous probes already mapped on maize and sugarcane. This map includes 199 loci revealed by 188 probes and distributed on 13 linkage groups. A comparison based on 84 common probes was performed between the sorghum composite map and a map of a sugarcane (Saccharum spp.) cultivar being developed and presently comprising 10 tentative linkage groups. A straight synteny was observed for 2 pairs of linkage groups; in two cases, 1 sorghum linkage group corresponded to 2 or 3 sugarcane linkage groups, respectively; in two cases 1 sugarcane link- age group corresponded to 2 separate sorghum linkage groups; for 2 sorghum linkage groups, no complete correspondance was found in the sugarcane genome. In most cases loci appeared to be colinear between homoeologous chromosomal segments in sorghum and sugarcane. These results are discussed in relation to published data on sorghum genomic maps, with specific reference to the genetic organization of sugarcane cultivars, and they, illustrate how investigations on relatively simple diploid genomes as sorghum will facilitate the mapping of related polyploid species such as sugarcane.

Key words SorghumRFLP mapComparative mappingSugarcane

Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • P. Dufour
    • 1
  • M. Deu
    • 1
  • L. Grivet
    • 1
  • A. D’Hont
    • 1
  • F. Paulet
    • 1
  • A. Bouet
    • 1
  • C. Lanaud
    • 1
  • J. C. Glaszmann
    • 1
  • P. Hamon
    • 1
  1. 1.Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), BP 5035, 34032 Montpellier Cedex 1, FranceFR