| Abstract: | The proteins of 70 Canadian-grown wheat cultivars were fractionated by SDS-PAGE to determine their HMW glutenin subunit composition. On the basis of previously established relationships between individual subunits and measures of bread-making quality, Glu-1 scores were calculated for 67 cultivars. The three cuhivars Chinook, Cypress and Supreza were found to contain novel HMW glutenin subunits previously uncatalogued. The Glu-1 scores accounted for 59–69% of the variation in bread-making quality of these cultivars whereas flour ash accounted for none. The implications of these results to wheat breeding programmes are discussed. |
