Application of molecular markers in cool season foodlegumes breeding uri icon

abstract

  • As the marker density has increased in linkage maps of the food legumes over the last tenyears, many markers closely linked to economic traits, both qualitative and quantitativeinherited, have been identified and published. Typical with other crops, soybean and maizefor example, application of marker assisted selection (MAS) in food legumes has beenaggressively pursued primarily by private institutions, due to costs and the more basic natureof public institutions research missions. However, developments in recent years havecontributed to increases in both the utility and application of MAS in public and privateinstitutes breeding and germplasm enhancement programs. These developments include diJ(ectly: (1) the development of PCR -based markers, sequence-tagged sites and co-dominantmicrosatellite markers available for pea, chickpea, lentil per se and the development of crosstaxamarkers from Medicago truncatula and Lotus japonicus, (2) the reduction in costs of theMAS technology, and indirectly (3) increases in genomic tools such as the construction oflegume EST and BAC libraries and sequencing of Medicago truncatula and Lotus japonicus,along with the elucidation of plant gene functions, particularly from Arabidopsis thaliana.We will review specific examples of the development status of MAS in pea for biotic stresses,chickpea for biotic stresses, lentil traits, other food legumes breeding and germplasmenhancement projects, and conclude with prospects for the future

publication date

  • 2005