The analysis of high molecular weight glutenin subunits compositions in wheat THE RELATION BETWEEN MORE SPIKELET AND HIGE MOLECULAR WEIGHT SUBUNIT COMPOSITIONS IN HEXAPLOID WHEAT Effects of Different Nitrogen Sources on HMW Glutenin Aggregates in Spring Wheat with Different HMW-GS Composition High-Molecular-Weight Glutenin Subunit Genesin in Decaploid Agropyron elongatum