Hua 1201 S is a medium indica photo-thermo-sensitive genic male sterile( PTGMS) line in rice. It was developed from the cross between Guangzhan 63-4 S( recipient) and VE6219( donor of Gene Pi2) through molecular marker-assisted selection( MAS) for tracking Pi2 with SSR marker RM527 and Indel marker Pi2-4,identification of phenotype and blast resistance and successive backcrossing. The results of field identification of blast resistance under natural conditions at the blast epidemic area of Lianghe Village,E...