小麦谷蛋白聚合作用对增施氮肥的反应

Response of Wheat Glutenin Polymerization to Increased Nitrogen Fertilization

通过小区试验,利用不同类型小麦品种研究了谷蛋白聚合作用对增施氮肥的反应。结果表明,N肥不仅能提高参试品种的籽粒产量、蛋白质含量、沉淀值、干(湿)面筋含量,而且能提高面粉中不溶性谷蛋白大聚合体(GMP)、可溶性谷蛋白聚合体(SGP)含量以及谷蛋白总量在总蛋白质中的比例((GMP+SGP)/Pr),改善谷蛋白聚合体的粒度分布。并且与基肥一次性施N(NB处理)相比,分期施N(基肥N+挑旗期追N,即NB+1处理)作用较大;不同类型小麦品种的谷蛋白聚合作用对增施N肥的反应差异很大。

The response of glutenin polymerization to increased nitrogen fertilization was studied using different types of wheat cultivars. The results showed that nitrogen treatment not only increased the grain yield, protein content, sedimentation,dry (wet) gluten content, but also increased the amounts of insoluble glutenin macropolymers (GMP), soluble glutenin polymers in flour and total glutenin concentration in protein and improved the size distribution of glutenin polymers. The effect of NB+1 treatment was stronger than NB treatment. Response of glutenin polymerization to increased nitrogen fertilization was quite different among the cultivars.