Quantitative genetics and the management of genetic resources. Introgression of wild forms for improving quantitative traits in barley. Theoretical expectation and empirical studies | [Génétique quantitative et gestion des ressources génétiques . Introgression des formes sauvages pour l'amélioration des caractères quantitatifs chez l'orge. Prévisions théoriques et études expérimentales]
2001
Leon, J. ((University of Bonn (Allemagne). Department of Crop Science and Plant Breeding)) | Schacht, J.
Although many studies showed that even the wildforms of our crops may improve elite breeding material in quantitative traits, it is still not known, which estimate and which selection procedure has to be used for a selection among wildform parental material. In a two year field test, the progenies of three generations (cross, first and second backcross) of 30 cross-combinations between barley cultivars and wildform lines were studied for quantitative traits like: Yield per Plant, Plant Height, Days to Anthesis, etc. The observed population means and genetic variances showed deviations from the theoretical expectations, especially in the cross and in the first backcross generation. Number of transgressive lines of early generation correlates to the respective number in the second backcross generation
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