Indica-japonica Differentiation Characteristic of CMS Lines and Restorer Lines of Dian-type Hybrid Rice

The indica japonica differentiation characteristic of CMS lines and restorer lines of Dian type hybrid rice was studied with 19 indica japonica diagnostic random primers. The results indicated that both japonica kin and indica kin were contained in these materials, but japonica kin was dominant. The indica kin of the CMS lines ranged from 4% to 24%, while that of the restorer lines ranged from 4% to 36% based on the results of 34 indica japonica loci. All of the tested CMS lines and restorer lines were classified into the japonica group by the cluster analysis with UPGMA method.