A review of current research on this species of rice.
Critical botanical review of species of rice; new contribution to the systematic study of the genus Oryza; species of genus Oryza and their interrelationsips; genepools in genus Oryza; molecular approaches in the evolutionary studies and speciation in genus Oryza - present status; genome research in genus Oryza; chromosome research in genus Oryza; exploration, collection and conservation of wild Oryza species; utilization of wild species of the genus Oryza in rice improvement; origin of cultivated rices; antiquity and spread of rice cultivation. Appendices: revised key to species in genus Oryza; nomenclatural confusions in genes Oryza; Porteresia coarctata - scope and limitations of of utilization in rice improvement.