水保所知识产出(1956---)知识库

在盆栽条件下，以旱地小麦品种长旱58 为材料，研究了3 种不同施氮条件下，灌浆期两种供水处理
的小麦子粒中蔗糖代谢、淀粉积累及相关酶活性的变化特征。发现干旱处理有利于小麦灌浆前中期淀粉积
累，干旱能提高子粒中蔗糖合成酶( SS) 、可溶性淀粉合成酶( SSS) 以及腺苷二磷酸葡萄糖焦磷酸化酶( AGPase)
的活性，干旱处理会降低灌浆后期子粒中淀粉合成相关酶活性及淀粉积累。结果表明在中氮水平下，干
旱处理提高了小麦灌浆前期子粒中淀粉合成相关酶的生理活性、进而促进了小麦子粒中淀粉的合成与积累。

Wheat cultivar“Changhan 58”was used for investigating enzymes involved in starch synthesis in grains
of wheat through systematic experiments under pot conditions with three nitrogen levels coupling two water treatments．
We investigated the effects of different water and nitrogen treatments on sucrose metabolism and activities of
enzymes involved in starch synthesis in grains of wheat． We found that drought treatment helped to increase activities
of starch accumulation during the early mid filling stage，activities of adenosine diphosphate glucose pyrophosphorylase(
AGPase) ， sucrose synthase( SS) and soluble starch synthase( SSS) ． And it would decrease activities of
enzymes and starch accumulation during the late filling stage． The results indicated that under the normal nitrogen
level， the drought treatment could increase physiological activities of enzymes involving in starch synthesis of wheat
grains，and it can also promote the accumulation of starch．