Plant Genetic Resource Management, Preservation, Characterization and Utilization
With the advent of molecular linkage maps valuable crop traits can be positioned on chromosomes with DNA-based markers. Knowledge of map position and closely linked DNA-based markers (tagging) can facilitate tracking and combining traits from different sources. Molecular markers, which function independent of the environment, allow for rapid selection of lines carrying the desired marker(s). One area of application is marker-assisted selection (MAS). MAS allows for the stacking, or pyramiding, of multiple disease resistance genes. These attributes directly benefit plant breeders through indirect detection of valuable traits, rapid high-throughput screening, and the ability to track multiple loci at once, thereby shortening the time to incorporate a new trait(s). Further benefits are gained through the detection of specific alleles, leading to
highly specific, easy-to-apply assays with increased resolution. A better understanding of crop genetics at the molecular level is an important component for further progress in food safety, nutrition, quality and yield.