Genetic Mapping and QTL Analysis in Common Bean

  • González A
  • Yuste-Lisbona F
  • Fernández-Lozano A
  • et al.
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Abstract

Common bean (Phaseolus vulgaris L.) is the most important legume for direct human consumption and a well-studied crop species in terms of genetics, genomics and breeding. Genome maps are important tools that are an integral part of genetic resource conservation and breeding programmes. Several maps have been developed or are being developed in common bean. Different types of molecular markers such as RFLP, AFLP, SSR, CAPS, RGA and EST have been developed and mapped onto the 11 common bean chromosomes. Markers have been used extensively for identification and mapping of genes and QTL for many biologically and agriculturally important traits, including disease resistance genes, photoperiod sensitivity, growth habit, pod size, seed weight, pigmentation, phenology and abiotic stress tolerance, and occasionally for germplasm screening, fingerprinting and marker-assisted breeding. MAS has been employed mainly for improving simply inherited traits and not much for improving complex traits. The utility of MAS in common bean breeding has been restricted largely due to inaccurate estimation of main QTL, epistatic and QTL {\texttimes} environmental interaction effects. GWAS has also proved to be a powerful tool for investigating complex traits and developing new markers for breeding. The huge amount of sequence information available for common bean via whole-genome sequencing projects facilitates in the next years the development of a rapid and cost-effective generation of high-density functional maps, which could also lead to the direct gene tagging for QTL mapping of important agronomic traits, improving the efficiency of common bean breeding programmes via MAS.

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González, A. M., Yuste-Lisbona, F. J., Fernández-Lozano, A., Lozano, R., & Santalla, M. (2017). Genetic Mapping and QTL Analysis in Common Bean (pp. 69–107). https://doi.org/10.1007/978-3-319-63526-2_4

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