We obtained two DNA clones, G93 (1.6kb) and G318 (1.7kb) from indica r
ice (Oryza sativa L.) cultivar Culture 340. Southern hybridization ana
lysis indicated that both DNA probes hybridized with DNA of indica cul
tivars but not with japonica cultivars. Some javanica cultivars DNAs d
id not hybridize with these probes. Nucleotide sequence (400bp) of a p
art of G93 showed a 65.8% G + C content. These novel DNA probes can be
used for the study of evolutional fingerprinting of rice cultivars.