T6VS?6AL Chromosome Translocation Does Not Alter Accumulations of High Molecular Weight Glutenin Subunits and Glutenin Macropolymer in Wheat Grain Cloning, Characterization and Chromosome Localization of Two Powdery Mildew Resistance-Related Gene Sequences from Wheat Molecular Cytogenetic Analysis of a Triticum aestivum-Haynaldia villosa Reciprocal Chromosomal Translocation Induced by Pollen Irradiation Cloning, Physical Mapping and Expression Analysis of a Wheat Mlo-like Gene Development and Application of Functional Markers Specific to Powdery Mildew Resistance on Chromosome Arm 6VS from Different Origins of Haynaldia villosa Cloning of a Resistance Gene Analog from Wheat and Development of a Codominant PCR Marker for Pm21 Identification and Analysis of Four Novel Molecular Markers Linked to Powdery Mildew Resistance Gene Pm21 in 6VS Chromosome Short Arm of Haynaldia villosa