Summary
Four populations of linseed derived from five parents were advanced from the F2 to the F6 generation by SSD and to the F5 by pedigree selection. These populations were used to compare the efficiency of the two methods in order to provide superior genotypes with respect to grain yield and oil content, i.e. oil yield. The results showed minimum differences between pedigree and SSD lines for grain yield, where in only one cross the SSD lines were significantly superior to the pedigree lines. Since pedigree selection was carried out for both, seed yield and oil content, a positive response to selection was expected. However, early selection for yield, a character with low heritability, was not successful. On the contrary, significant differences for oil content were detected between the two groups of lines in three of the four crosses studied. In these cases the pedigree lines were superior to the SSD lines. These results demonstrate that strict selection in early generations for oil content, a character with comparatively high heritability, is feasible and successful in linseed. However, selection for seed yield should be postponed to later inbred generations. Consequently, in breeding for maximum oil yield of linseed a two-step selection procedure is recommended.
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Abbreviations
- PS:
-
pedigree selection
- SSD:
-
single seed descent
- TGW:
-
thousand grain weight
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Salas, G., Friedt, W. Comparison of pedigree selection and single seed descent for oil yield in linseed (Linum usitatissimum L.). Euphytica 83, 25–32 (1995). https://doi.org/10.1007/BF01677857
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DOI: https://doi.org/10.1007/BF01677857