The BBSRC Designing Future Wheat - Nested Association Mapping panel (DFW - NAM) comprises of 8359 Recombinant Inbred Lines (RILs) from a total of 91 bi-parental mapping populations. Each population originates from a cross between the UK spring wheat Paragon and 91 hexaploid wheat landraces, members of a genetically diverse core set of the A.E Watkins Stabilised Collection (https://seedstor.gru.jic.ac.uk/search-browseaccessions.php?idCollection=39) as described in Wingen et al. (2014) https://doi.org/10.1007/s00122-014-2344-5. The development and genetic analysis of the NAM panel is described in Wingen et al. (2017) https://doi.org/10.1534/genetics.116.194688. Genotype data and genetic maps are available at: http://wisplandracepillar.jic.ac.uk/results_resources.htm and QTL discovered at: http://www.cerealsdb.uk.net/cerealgenomics/CerealsDB/select_QTL.php Use the Toggle and Sub-Collections search tool to find the population of interest on the collection search page. The GRU holds greenhouse grown, hand threshed seeds produced from cellophane bagged ears. These precise gold standard genotyped lines are occasionally held in stocks too low for immediate distribution. In these cases, ordering may include a round of bulking to achieve the seed for your order. Please be aware of this when planning your experiments and order with appropriate timing. DNA can be supplied in advance of seeds if requested