Theoretical and Applied Genetics

, Volume 94, Issue 5, pp 682–691

Insight on segregation distortions in two intraspecific crosses between annual species of Medicago (Leguminosae)

  • E. Jenczewski
  • M. Gherardi
  • I. Bonnin
  • J. M. Prosperi
  • I. Olivieri
  • T. Huguet

DOI: 10.1007/s001220050466

Cite this article as:
Jenczewski, E., Gherardi, M., Bonnin, I. et al. Theor Appl Genet (1997) 94: 682. doi:10.1007/s001220050466

Abstract

 About 40% (α=0.05) of the PCR-derived markers scored in a Medicago truncatula and M. tornata intraspecific cross departed from Mendelian expectations at α=0.05. This proportion is among the highest ever documented in the literature, notably for intraspecific crosses. Estimations of DNA amount were also implemented for the parental genotypes or parental lines, and significant variations were observed. Our results suggest that the parental genotypes have diverged for quite a while, and we propose that the level of distortion we documented is correlated with the genome size difference we measured.

Key words Medicago truncatula Medicago tornata RAPD Segregation distortion DNA content 

Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • E. Jenczewski
    • 1
  • M. Gherardi
    • 2
  • I. Bonnin
    • 1
  • J. M. Prosperi
    • 1
  • I. Olivieri
    • 3
  • T. Huguet
    • 2
  1. 1.Station de Génétique et Amélioration des Plantes, INRA Montpellier, Domaine de Melgueil, 34130 Mauguio, FranceFR
  2. 2.INRA-CNRS UMR 05, B.P. 27, 31326 Castanet Tolosan Cedex, FranceFR
  3. 3.Institut des Sciences de l’Evolution, Université de Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex, FranceFR

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