Registration of the Coda/Brundage wheat recombinant inbred line mapping population

Abstract

AbstractA mapping population (Reg. no. MP‐15, NSL 540708 MAP) composed of a cross between the soft white common winter wheat (Triticum aestivum L. subsp. aestivum) ‘Brundage’ (PI 599193) and the soft white club winter wheat (T. aestivum L. subsp. compactum) ‘Coda’ (PI 594372) was developed to maximize diversity within the soft white market class. The population comprises 268 F6:7 lines developed through single seed descent. The genetic linkage map consists of 2,144 DNA markers and is assigned to 32 linkage groups covering all chromosomes except 1D. This population was initially developed to determine additional markers linked to the Pch1 gene in wheat. It has further been used to identify quantitative trait loci (QTL) associated with resistance to other diseases such as Cephalosporium stripe (caused by Cephalosporium gramineum) and stripe rust (caused by Puccinia striiformis Westend. f. sp. tritici Erikss). The mapping population has also been used for identification of DNA markers associated with freezing tolerance, end‐use quality, and the compactum locus. From the differences in traits between the parental lines, the Coda/Brundage population provides the opportunity for further inquiry into the genes behind the identified QTL. The parents have only been phenotypically screened for a limited number of traits, and further screening may identify more polymorphic traits which the population can be used to map. It can also serve as a validation population for marker‐trait associations identified in other populations or other genetic studies such as recombination frequency.