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TitleConvergent Domestication of Cereal Crops By Independent Mutations At Corresponding Genetic-Loci
Authors Paterson, A. H.; Lin, Y. R.; Li, Z. K.; Schertz, K. F.; Doebley, J. F.; Pinson, S. R. M.; Liu, S. C.; Stansel, J. W.; Irvine, J. E.
PublicationScience 269(5231): 1714-1718
AbstractIndependent domestication of sorghum, rice, and maize involved convergent selection for large seeds, reduced disarticulation of the mature inflorescence, and daylength-insensitive flowering. These similar phenotypes are largely determined by a small number of quantitative trait loci (QTLs) that correspond closely in the three taxa. The correspondence of these QTLs transcends 65 million years of reproductive isolation. This finding supports models of quantitative inheritance that invoke relatively few genes, obviates difficulties in map-based cloning of QTLs, and impels the comparative mapping of complex phenotypes across large evolutionary distances, such as those that separate humans from rodents and domesticated mammals.

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.: 2009 :: Barry Marler :: Plant Genome Mapping Laboratory :: University of Georgia