Advertisement

Theoretical and Applied Genetics

, Volume 101, Issue 5–6, pp 948–955 | Cite as

A high-density linkage map of Theobroma cacao L.

  • A. M. Risterucci
  • L. Grivet
  • J. A. K. N’Goran
  • I. Pieretti
  • M. H. Flament
  • C. Lanaud

Abstract 

The first linkage map established by Lanaud et al. (1995) was used as a starting point to produce a high-density molecular linkage map. A mapping population of 181 progenies resulting from a cross between two heterozygous genotypes, a Forastero and a Trinitario (hybrid between Forastero and Criollo), was used for the linkage analysis. A new DNA isolation protocol was established, which allows enough good quality DNA to construct a genetic map with PCR-based markers. The map comprises 424 markers with an average spacing between markers of 2.1 cM. The marker types used were five isozymes, six loci from known function genes, 65 genomic RFLPs, 104 cDNA RFLPs, three telomeric probes, 30 RAPDs, 191 AFLPs and 20 microsatellites. The use of new marker types, AFLP and microsatellites, did not disturb the original order of the RFLP loci used on the previous map. The genetic markers were distributed over ten linkage groups and cover 885.4 cM. The maximum distance observed between adjacent markers was 16.2 cM, and 9.4% of all loci showed skewed segregation.

Key words Theobroma cacao L. AFLP Microsatellites RFLP High-density genetic map 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • A. M. Risterucci
    • 1
  • L. Grivet
    • 1
  • J. A. K. N’Goran
    • 2
  • I. Pieretti
    • 1
  • M. H. Flament
    • 1
  • C. Lanaud
    • 1
  1. 1.CIRAD, Centre de Cooperation Internationale en Recherche Agronomique pour le Développement, avenue Agropolis, BP 5035, 34032 Montpellier cedex, France e-mail: risterucci@cirad.fr Fax: +33467615605FR
  2. 2.IDEFOR-DCC, BP 1827, Abidjan 01, Co^te d’Ivoire

Personalised recommendations