Research progress on indica/japonica rice cross breeding

Indica/japonica rice cross breeding suggested different meaning from utilization of indica/japonica rice heterosis.The terminologies,the theories and the practice of related breeding were reviewed.The studies on locus for hybrid sterility could be used to direct indica/japonica rice cross breeding.The indica/japonica rice cross breeding in Guangdong was introduced.To enlarge progeny population was potential effective approach in indica/japonica rice cross breeding and the method was put into practice.