| Abstract: | In total, 185 wheat cultivars and lines from major Chinese wheat regions, Australia and USAin two trials, sown in four and two environments, respectively, were used to investigate starch property and itsrelationship with dry white Chinese noodle (DWCN) quality. Significant variations were observed in all starchparameters and DWCN quality. High pasting viscosity cultivars include Sunstate, Hartog, Eradu, Cunning-han, Gamenya, Karl92, Sunco, Yangmai5, Yangmai158, Mianyang26, Een1, Yumai41, Yumai49,Zheng81-1, Yumai54, Yumai2, Yumai47, Lu955159, Lumai15, L;mai21, Shaanyou225, Guanfeng2,Ji5099, Bainong4, and Jinmai2. Wheats from Australia, USA, South China Autumn-sown Spring Wheat Re-gion and Yellow and Huai Valley showed better starch properties and DWCN quality than those from NorthChina Plain. High peak viscosity, breakdown and flour swelling volume were significantly associated with goodDWCN quality. A relatively high frequency of Wx-B1 null alleles was detected in Chinese wheats. Cultivarswith null for Wx-B1 GBSS performed higher pasting viscosity and flour swelling volume, and better DWCNquality than normal type. |
