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      • Molecular Markers and Their Usefulness in Rice Breeding

        ( Neeraj Kumar Tyagi ),( Bandarupalli Ramesh ),( Kuldeep Tyagi ) 전북대학교 농업과학기술연구소 2009 농업생명과학연구 Vol.40 No.2

        Molecular markers are extensively used for improving and sustaining the rice productivity. A variety of molecular genetic markers, including restriction fragment length polymorphisms (RFLPs), random amplified polymorphic DNAs (RAPDs), amplified fragment length polymorphisms (AFLPs), microsatellites or simple sequence repeats (SSRs), expressed sequence tags (EST) and single nucleotide polymorphism (SNP) have been developed providing new tools for rice breeding. The major advantages of the molecular markers over the other classes of markers are their number is potentially unlimited, spanning across the genome, their expression is unaffected by the environment and their assessment is independent of the stage of plant development. Molecular markers are landmarks in the chromosome maps that can be used to monitor the transfer of specific chromosome segments known to carry useful agronomic traits. Breeders use these molecular markers to increase the precision of selection for the best trait combinations. Molecular markers have large number of applications ranging from diversity analysis to the improvement of rice varieties by marker assisted selection. This review describes the usefulness of some important DNA markers in rice improvement.

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