Resumen
- Modern breeding strategies often fail to include precise genetic information. Marker-Aided Selection (MAS) strategies have proven to be more efficient than conventional selection in several cases, but still suffers of (1) lack of precision in the localization of the genes of agronomical importance (the so-called QTLs, for Quantitative Trait Loci) and (2) are often limited to the alleles available in the crossing scheme used for QTL detection, i.e., the genetic information obtained from a particular cross between two genotypes (or lines) will not be useful when working with other genotypes. We propose to develop a new genetic resource, called a Nested Association Mapping (NAM) population (Yu J. et al. 2008), that would (1) help in linking the genomic tools available for rice, (2) give access to a much higher allelic diversity at the important QTLs than “conventional” mapping approaches do, (3) allow fine mapping of QTLs (i.e., localize them with high precision on the rice genome), thus increasing significantly the efficiency of MAS strategies, and (4) provide interesting and promising genetic materials (advanced lines) for direct introduction in breeding schemes.