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Item Homoeology of Thinopyrum Junceum and Elymus Rectisetus Chromosomes to Wheat and Disease Resistance Conferred by the Thinopyrum and Elymus Chromosome in Wheat(North Dakota State University, 2015) McArthur, Rachel IoneThirteen common wheat ‘Chinese Spring’ (CS)-Thinopyrum junceum addition lines and three common wheat ‘Fukuhokomuji’(Fuku)-Elymus rectisetus addition lines were characterized and verified as disomic additions of a Th. junceum or E. rectisetus chromosome in the wheat backgrounds by fluorescent genomic in situ hybridization (FGISH). A1048 contained segregating E. rectisetus chromosomes. Seven partial CS-Th. junceum amphiploids were identified to combine Th. junceum chromosomes with CS chromosomes. Various CS-Th. junceum disomic addition lines were determined to contain Th. junceum chromosomes in homoeologous groups 1, 2, 4 and 5 by Restriction Fragment Length Polymorphism (RFLP) and storage protein analysis. The disomic addition lines A1026 and A1057 were identified to carry an E. rectisetus chromosome in group 1 and A1034 in group 5. A1048 contained E. rectisetus chromosomes from groups 1-6. Several Th. junceum chromosomes in the addition lines were found to contain genes for resistance to Fusarium head blight.