Abstract
‘Becker’/‘Massey’ (Reg. No. MP‐5, NSL 479730 MAP), is a soft red winter wheat (Triticum aestivum L.) recombinant inbred line (RIL) population developed by Virginia Polytechnic Institute and State University. This mapping population is composed of 152 F7:14 RILs that were developed using single‐seed descent in earlier generations (F2:3– F7:8) and then advanced and tested in headrows in the field in later generations. The population has been used to map quantitative trait loci (QTL) associated with adult plant resistance to powdery mildew [APR‐PM; caused by Blumeria graminis (DC.) E.O. Speer f. sp. tritici Em. Marchal (syn. Erysiphe graminis f. sp. tritici)] and Fusarium head blight (FHB), primarily caused by Fusarium graminearum Schwabe [telomorph: Gibberella zeae Schw. (Petch)]. It also has been used to study the effects of dwarfing and photoperiod‐sensitivity genes on expression of FHB resistance. Genetic marker data collected on this population includes 96 simple sequence repeat and 740 Diversity Arrays Technology (Yarralumla, ACT, Australia) markers. Chromosome linkage maps of this population were constructed, except for chromosomes 3D and 6D, and used for QTL analyses. Unique and major QTLs were identified for APR‐PM on chromosomes 1BL, 2AL, and 2BL and for FHB resistance on 3BL, 4BS, and 4DS of Massey, which can be incorporated into cultivar development programs via enrichment of favorable alleles.
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