TeoNAM: A Nested Association Mapping Population for Domestication and Agronomic Trait Analysis in Maize.

ABSTRACT: Recombinant inbred lines (RILs) are an important resource for mapping genes controlling complex traits in many species. While RIL populations have been developed for maize, a maize RIL population with multiple teosinte inbred lines as parents has been lacking. Here, we report a teosinte nested association mapping (TeoNAM) population, derived from crossing five teosinte inbreds to the maize inbred line W22. The resulting 1257 BC₁S₄ RILs were genotyped with 51,544 SNPs, providing a high-density genetic map with a length of 1540 cM. On average, each RIL is 15% homozygous teosinte and 8% heterozygous. We performed joint linkage mapping (JLM) and a genome-wide association study (GWAS) for 22 domestication and agronomic traits. A total of 255 QTL from JLM were identified, w

SUBMITTER: Chen Q 

PROVIDER: S-EPMC6827374 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature