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

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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.

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Authors and Affiliations

  1. Station de Génétique et Amélioration des Plantes, INRA Montpellier, Domaine de Melgueil, 34130 Mauguio, France, , , , , , FR

    E. Jenczewski, I. Bonnin & J. M. Prosperi

  2. INRA-CNRS UMR 05, B.P. 27, 31326 Castanet Tolosan Cedex, France, , , , , , FR

    M. Gherardi & T. Huguet

  3. Institut des Sciences de l’Evolution, Université de Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex, France, , , , , , FR

    I. Olivieri

Authors
  1. E. Jenczewski
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  2. M. Gherardi
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  3. I. Bonnin
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  4. J. M. Prosperi
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  5. I. Olivieri
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  6. T. Huguet
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Received: 11 April 1996 / Accepted: 27 September 1996

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Jenczewski, E., Gherardi, M., Bonnin, I. et al. Insight on segregation distortions in two intraspecific crosses between annual species of Medicago (Leguminosae). Theor Appl Genet 94, 682–691 (1997). https://doi.org/10.1007/s001220050466

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  • DOI: https://doi.org/10.1007/s001220050466

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