Marker Assisted Selection (MAS) has recently advanced, resulting in the creation of more effective selection paraphernalia to replace the phenotype-based conventional selection. For MAS, some genes associated with unique traits with molecular markers have been discovered. In the last decade, molecular marker technologies have advanced rapidly, allowing for the development of linkage maps, marker-assisted breeding (MAB), and molecular dissection of complex agronomical traits. The MAB method involves transferring a single allele at a target locus from a donor variety or line to a recipient variety or line against donor introgressions around the genome when selecting. At each generation using a molecular marker allows for progenies genetic dissection, speeding up the selection process, resulting in greater genetic benefit per unit of time. Nowadays, MABC (Marker Assisted Backcross Breeding) is being used widely in plant breeding programs to develop new varieties/lines, especially in rice. This paper reviews recent literature on some examples of salt-tolerant rice variety/line development using the MAS technique in rice-growing countries within the shortest timeframe.

Key words: Conventional breeding, gene, marker-assisted selection, rice, salinity.