The Genetic Architecture of Maize Flowering Time
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- 7 August 2009
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 325 (5941), 714-718
- https://doi.org/10.1126/science.1174276
Abstract
Codifying Maize Modifications: Maize, one of our most important crop species, has been the target of genetic investigation and experimentation for more than 100 years. Crossing two inbred lines tends to result in “better” offspring, in a process known as heterosis. Attempts to map the genetic loci that control traits important for farming have been made, but few have been successful (see the Perspective by Mackay ). Buckler et al. (p. 714 ) and McMullen et al. (p. 737 ) produced a genomic map of maize that relates recombination to genome structure. Even tremendous adaptations in very diverse species were produced by numerous, small additive steps. Differences in flowering time in maize among inbred lines were not caused by a few genes with large effects, but by the cumulative effects of numerous quantitative trait loci—each of which has only a small impact on the trait.Keywords
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