Details

Autor(en) / Beteiligte

• Chen, Qiuyue
• Yang, Chin Jian
• York, Alessandra M
• Xue, Wei
• Daskalska, Lora L
• DeValk, Craig A
• Krueger, Kyle W
• Lawton, Samuel B
• Spiegelberg, Bailey G
• Schnell, Jack M
• Neumeyer, Michael A
• Perry, Joseph S
• Peterson, Aria C
• Kim, Brandon
• Bergstrom, Laura
• Yang, Liyan
• Barber, Isaac C
• Tian, Feng
• Doebley, John F

Titel

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

Ist Teil von

• Genetics (Austin), 2019-11, Vol.213 (3), p.1065-1078

Ort / Verlag

United States: Genetics Society of America

Erscheinungsjahr

2019

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• 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 BC S 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, with many of these mapping near known genes or novel candidate genes. TeoNAM is a useful resource for QTL mapping for the discovery of novel allelic variation from teosinte. TeoNAM provides the first report that , a rice domestication gene, is also a QTL associated with tillering in teosinte and maize. We detected multiple QTL for flowering time and other traits for which the teosinte allele contributes to a more maize-like phenotype. Such QTL could be valuable in maize improvement.