Cloning a Novel Gene TaNRX of Trx Superfamily and Developing Its Molecular Markers Related to Drought Resistance in Common Wheat Molecular Mapping of Powdery Mildew Resistance Gene MlWE18 in Wheat Originated from Wild Emmer(Triticum turgidum var. dicoccoides) Distribution of Allelic Variation for Vernalization, Photoperiod, and Dwarfing Genes and Their Effects on Growth Period and Plant Height among Cultivars from Major Wheat Producing Countries Relationship between Polymorphism at Wx Gene and Amylose Content in Hulless Barley