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- Maize Nested Association Mapping (NAM) population - to form this population (consisting of 5000 RILs in total), 25 very diverse lines of maize were crossed to B73 and then 200 RILs were created from each of the 25 families, with each RIL derived from a unique F2 plant. A list of the 25 diverse maize inbred parental lines can be obtained here. NAM is a new approach to the mapping of genes underlying complex traits, in which the statistical power of QTL mapping is combined with the high (potentially gene-level) chromosomal resolution of association mapping. The NAM concept is explained and demonstrated via computer simulation in the following publication:
Yu J, Holland JB, McMullen MD, Buckler ES. 2008. Genetic design and statistical power of Nested Association Mapping. Genetics 178:539-551. [pdf]
Also, for further explanation, see FAQ items What are RILs?, How are the NAM RILs useful? and What is Nested Association Mapping (NAM)?.
SEED ARE NOW AVAILABLE for 4,821 of the maize NAM lines from the Maize Genetics Cooperation Stock Center. The remaining 179 lines will be available within one year. For those who would like to use the NAM population to map genes for their own traits of interest, but who do not have the resources to grow the entire population, PUBLIC GROW-OUTS will be held in Ithaca NY in 2008, in Columbia MO in 2009 and in Raleigh NC in 2010 - click here for more details on these public grow-outs. Also, the GENOTYPES AND GENETIC MAP for the NAM population for 1106 SNPs are available on our data sets page.
- Maize Association Mapping Population - A total of 281 diverse inbred lines of maize from throughout the world, representing a wide range of genotypic and phenotypic diversity. A list of the lines can be downloaded by clicking here. This population is described in detail in the following paper:
Flint-Garcia SA, Thuillet A-C, Romero SM, Yu J, Pressoir G, Mitchell S, Doebley J, Kresovich S, Goodman MM, Buckler ES.
2005. Maize association population: a high resolution platform for QTL dissection. Plant Journal, 44: 1054-1064.
[pdf]
A Q-matrix describing the population structure of these lines (based on 95 SSR markers) is available here. Seed from these lines are currently available through NCRPIS - a list of the NCPRIS accession numbers corresponding to these lines is available here. (See FAQ item What is association mapping?)
- 12 Teosinte Inbred Lines - We have developed a set of twelve teosinte inbred lines and have deposited seed with NCRPIS. Small quantities of seed from some of the lines can also be obtained from John Doebley (jdoebley_at_wisc.edu). (See FAQ item What is an inbred line?)
- Teosinte Association Mapping population - A collection of seed from 86 populations of teosinte (Zea mays ssp. parviglumis) for use in association mapping studies (e.g., Weber et al. 2007) has been deposited with NCRPIS.
- 27 Maize Landrace Inbreds - We have developed a set of 27 inbred lines from maizes landraces indigenous to regions that are poorly represented in previously existing world wide maize inbreds (e.g., the Andes, Southwestern U.S. and Highland and Northwestern Mexico). Seed from these 27 maize landrace inbred lines are currently available in small quantities from John Doebley (jdoebley_at_wisc.edu), and will be deposited with NCRPIS in 2009. (See FAQ item What are maize landraces?)
- 1000 Maize-Teosinte Recombinant Inbred Lines (RILs) - For use in QTL mapping of domestication traits (See FAQ item What is QTL mapping?). Anticipated release in 2009.
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