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Selection in backcross programmes.
1INRA, UMR de Génétique Végétale, Ferme du Moulon, 91190 Gif-sur-Yvette, France. fred@moulon.inra.fr
Summary
Backcrossing is a breeding method to transfer traits using molecular markers. This review covers its use in improving populations and mapping quantitative trait loci for better genetic understanding.
Area of Science:
- Genetics
- Plant and Animal Breeding
Background:
- Backcrossing is a long-established breeding scheme for introgression of traits.
- It involves transferring a characteristic from a donor parent to a recurrent parent's genome.
Purpose of the Study:
- To review the uses of backcrossing in modern genetics.
- To highlight the role of molecular markers in backcross programs.
- To explain the application of backcrossing in genetic improvement and trait mapping.
Main Methods:
- Review of existing literature on backcrossing.
- Discussion of molecular marker-assisted selection in backcross programs.
Main Results:
- Backcrossing, enhanced by molecular markers, is crucial for trait introgression.
- Selection in backcross programs aids in improving genetic value of populations.
- Backcrossing facilitates fine mapping of quantitative trait loci (QTLs).
Conclusions:
- Backcrossing is a versatile tool in modern genetics.
- It significantly contributes to understanding the genetic basis of quantitative trait variation.
- Molecular markers have expanded the utility and precision of backcrossing.