Abstract
Advancement in sequencing technologies has contributed towards identification and development of different types of molecular markers. Molecular plant breeding has contributed to a more comprehensive understanding of molecular markers and their role in identifying the genetic diversity within the crop plants. Marker-assisted breeding is basically the application of molecular markers, in combination with linkage maps and genomics, to alter and improve plant traits on the basis of genotypic assay. Several modern plant breeding strategies were developed which include marker-assisted selection (MAS), marker-assisted backcrossing (MABC), marker-assisted recurrent selection (MARS), and genome-wide selection (GWS) or genome selection (GS). The selection of right type of molecular markers is usually dependent on the breeding objectives. Similarly, selection strategies of molecular markers for qualitative and quantitative characters may differ. The procedure followed for marker assisted selection under various breeding objectives and conditions, for qualitative and quantitative traits are discussed in this chapter.
Published Version
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