The invention relates to the field of genetic breeding, and particularly relates to SNP molecular markers linked with rice
sodium and
potassium ion absorption QTL qK / Na-3-1, primers and application. The SNP molecular markers RS (36172492) and RS (36174628) are located on a Chr3
chromosome short arm of an IRGSP-1.0
genome version, the sequences are shown as SEQ ID NO. 1 and SEQ ID NO. 2, the polymorphisms are (T / G) (G / -), (A / -), and the SNP molecular markers can be obtained by amplifying the primers shown as SEQ ID NO. 3 and SEQ ID NO. 5. The molecular markers can accurately track the rice
sodium and
potassium ion absorption QTL qK / Na-3-1 and predict the potential salt tolerance characteristic of rice, and then
molecular breeding is facilitated. The invention further discloses a method foridentifying the rice
sodium and
potassium ion absorption QTL qK / Na-3-1 molecular markers. By means of the method, the accuracy of sodium and potassium ion absorption prediction can be enhanced, so that rice varieties or strains with potential enhanced rice salt tolerance are quickly screened out for breeding, and the breeding process of the rice varieties with potential salt tolerance can be greatly accelerated.