| Abstract: | HMW-GS 5+ 10 was introduced to four major wheat cultivars Kehan9, Kefeng3, Longmai20and Kenda4 through 5 or 6 consecutive backcrosses. No significant difference in protein content and dry glutencontent was observed between cultivars containing 5+ 10 and 2+ 12 or 3+12 (P＞0. 1). In cuitivars contai-ning HMW-GS 5 +10, the ratio of wet gluten content to dry gluten content was 2.9 -5.0 % (P＜0.01) lowerthan the ratio from the cultivars containing 2+ 12 or 3+12, the ratio of Zeleny sedimentation volume to drygluten content was 4.5 - 13.4% (P＜0. 05) higher. The degree of softening in cuitivars having 5+10 was 15- 25 FU (P＜0.01) lower, while the maximum resistance was 82 - 193 EU (P＜0.05) higher. Backcrosseswith biochemical marker assisted selection in the improvement of quality in wheat cultivars was discussed. |
