小麦不同品种高分子量谷蛋白亚基积累动态的研究

以不同品质类型的春小麦品种为材料,研究灌浆期籽粒贮藏蛋白中高分子量谷蛋白亚基积累动态.研究结果表明,小麦高分子量谷蛋白亚基是在籽粒形成过程中逐渐形成的.东农7742高分子量谷蛋白亚基在开花后10 d开始出现,14 d亚基全部形成.新克旱9在开花后12 d亚基开始出现,18 d亚基全部形成.新克旱9比东农7742亚基形成晚2～4 d.高分子量谷蛋白亚基的积累在籽粒形成初期,积累量少,随籽粒的灌浆,谷蛋白亚基积累渐增.东农7742和新克旱9均在开花后20 d亚基积累速度加快,花后22～26d积累最快,但东农7742的亚基积累强度和积累总量明显高于新克旱9,表现出2个品种亚基动态形成和积累以明显差异的特点.

Studies on the Accumulation of HMW Glutenin Subunits in Wheat with Different Quality

The accumulation of HMW glutenin subunits was studied in the duration of grain filling by using spring wheat cultivars with different quality. The results showed that the HMW-GS formed gradually in grain formation. The HMW-GS initiated around 10 day post-anthesis. All HMW-GS were found around 14 day postanthesis in DN 7742. In XKH 9, it was 2 and 4 days later compared with DN 7742.. The accumulation of HMW-GS increased gradually along with the process of grain filling. The accumulation rate of HMW-GS increased rapidly when 20 days post-anthesis and reached the peak when 22 - 26 days post-anthesis in DN 7742 and XKH 9, but the accumulation rate and the final accumulation level of HMW-GS was higher evidently than those in DN 7742, Compared with XKH 9, It was evidently different that the formation and accumulation of HMW-GS in two spring wheat with different quality.