Genomic estimation of complex traits reveals ancient maize adaptation to temperate North America.
Science
; 357(6350): 512-515, 2017 08 04.
Article
em En
| MEDLINE
| ID: mdl-28774930
ABSTRACT
By 4000 years ago, people had introduced maize to the southwestern United States; full agriculture was established quickly in the lowland deserts but delayed in the temperate highlands for 2000 years. We test if the earliest upland maize was adapted for early flowering, a characteristic of modern temperate maize. We sequenced fifteen 1900-year-old maize cobs from Turkey Pen Shelter in the temperate Southwest. Indirectly validated genomic models predicted that Turkey Pen maize was marginally adapted with respect to flowering, as well as short, tillering, and segregating for yellow kernel color. Temperate adaptation drove modern population differentiation and was selected in situ from ancient standing variation. Validated prediction of polygenic traits improves our understanding of ancient phenotypes and the dynamics of environmental adaptation.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Zea mays
/
Aclimatação
Tipo de estudo:
Prognostic_studies
País como assunto:
America do norte
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article