Synthetic hexaploid wheat enhances variation and adaptive evolution of bread wheat in breeding processes Allelic Variations of Puroindoline a and Puroindoline b Genes in New Type of Synthetic Hexaploid Wheats from CIMMYT Identification of synthetic wheat accessions with resistance to sharp eyespot Detection of the Introgression Loci of Synthetic Hexaploid Wheat in Wheat Cultivar Chuanmai 42 by SSR Markers Identification of a High-Yield Introgression Locus from Synthetic Hexaploid Wheat in Chuanmai 42 Genetic Effects of 1BS Chromosome Arm on the Main Agrionomic Traits in Chuanmai 42