Association studies have rarely been used in plant genetics, in part because of the risk of false positives caused by population structure. A study of flowering time in maize makes the first use of recent 'structured association' methods—statistical approaches that use independent loci to control for the effects of structure and admixture.
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Pritchard, J. Deconstructing maize population structure. Nat Genet 28, 203–204 (2001). https://doi.org/10.1038/90026
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DOI: https://doi.org/10.1038/90026
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