SDS-PAGE of soluble protein (A), gliadin (B) and glutenin (C) in 18 major Chinese wheat cultivars. (M, Marker; lane 1, Zhong 1211; lane 2, Zhou 32; lane 3, Zheng 366; lane 4, Huai 40; lane 5, Luo 29; lane 6, Yan 4110; lane 7, Bai 64; lane 8, Feng 20; lane 9, Bai 4199; lane 10, Zhou 18; lane 11, Luo 26; lane 12, Zhou 27; lane 13, Zhou 36; lane 14, Bai 58; lane 15, Zheng 113; lane 16, Zheng 136; lane 17, Bai 207; lane 18, Xu 918.)