Distinguishing rice (Oryza sativa poaceae) from wildOryza species through phytolith analysis, II Finalized method

Asian rice is an important grain, not only in its homeland but in many areas of the world. Preliminary studies suggested that phytolith analysis, the identification of opaline silica bodies, provided a reliable way of identifying rice, especially in situations where preservation of charred botanical remains was poor. Results of this follow-up study, which incorporates all Asian wild Oryza species and a diverse array of traditional Oryza sativa cultivars, confirm that rice can be identified with a high level of certainty by the size and qualitative features of a distincitve phytolith, the double-peaked glume cell.[PUBLICATION ABSTRACT]