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

• Published in: Theoretical and applied genetics Vol. 94; no. 5; pp. 682 - 691
• Main Authors: JENCZEWSKI, E, GHERARDI, M, BONNIN, I, PROSPERI, J. M, OLIVIERI, I, HUGUET, T
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01-04-1997; Berlin Springer Nature B.V; Springer Verlag
• Subjects: Analysis; Beans; Biodiversity and Ecology; Biological and medical sciences; Classical genetics, quantitative genetics, hybrids; domain_sde.be.gp; Environmental Sciences; Fundamental and applied biological sciences. Psychology; Genetic aspects; Genetic transformation; Genetics; Genetics of eukaryotes. Biological and molecular evolution; Hybridization; Intraspecific genetic variation; Legumes; Medicago; Medicago truncatula; Mimosaceae; Pteridophyta, spermatophyta; Vegetals; France; Genetic inheritance; Leguminosae; Genetic marker; Segregation; Dicotyledones; DNA; Angiospermae; Hybrid; Distortion; Spermatophyta; Quantitative analysis; Medicago truncatula; Segregation distortion; Medicago tornata; DNA content; RAPD
• ISSN: 0040-5752; 1432-2242
• DOI: 10.1007/s001220050466

About 40% ([alpha] = 0.05) of the PCR-derived markers scored in a Medicago truncatula and M. tornata intraspecific cross departed from Mendelian expectations at [alpha] = 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.