Consilience of genetics and archaeobotany in the entangled history of rice

Fuller, D.Q. and Sato, Y.I and Castillo, C. and et al, . (2010) Consilience of genetics and archaeobotany in the entangled history of rice. Archaeological and Anthropological Sciences, 2 (2). pp. 115-131.

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Major leaps forward in understanding rice both in genetics and archaeology have taken place in the past decade or so—with the publication of full draft genomes for indica and japonica rice, on the one hand, and with the spread of systematic flotation and increased recovery of archaeological spikelet bases and other rice remains on early sites in China, India and Southeast Asia. This paper will sketch a framework that coherently integrates the evidence from these burgeoning fields. This framework implies a reticulate framework in the phylogeny of early cultivated rice, with multiple starts of cultivation (two is perhaps not enough) but with the key consolidations of adaptations that must have been spread through hybridisation and therefore long-distance cultural contacts. Archaeobotanical evidence allows us to document the gradual evolutionary process of domestication through rice spikelet bases and grain size change. Separate trends in grain size change can be identified in India and China. The earliest centre of rice domestication was in the Yangtze basin of China, but a largely separate trajectory into rice cultivation can be traced in the Ganges plains of India. Intriguingly, contact-induced hybridisation is indicated for the early development of indica in northern India, ca. 2000 BC. An updated synthesis of the interwoven patterns of the spread of various rice varieties throughout Asia and to Madagascar can be suggested in which rice reached most of its historical range of important cultivation by the Iron Age.

Item Type: Article
Uncontrolled Keywords: Archaeology, Oryza sativa, Domestication, Dispersal, Neolithic
Author Affiliation: Institute of Archaeology, University College London, London, UK
Subjects: Crop Improvement
Crop Improvement > Genetics/Genomics
Divisions: Other Crops
Depositing User: Mr Balakrishna Garadasu
Date Deposited: 15 Feb 2013 13:25
Last Modified: 15 Feb 2013 13:25
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