Effect of Nitrogen Application Levels on Nitrogen Assimilation and Grain Protein Components Accumulation in Strong Gluten Wheat

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Effect of Nitrogen Application Levels on Nitrogen Assimilation and Grain Protein Components Accumulation in Strong Gluten Wheat

更新时间：2024-11-07

- Effect of Nitrogen Application Levels on Nitrogen Assimilation and Grain Protein Components Accumulation in Strong Gluten Wheat
- Issue 5, Pages: 147-150(2007)
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- Published：2007
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Effect of Nitrogen Application Levels on Nitrogen Assimilation and Grain Protein Components Accumulation in Strong Gluten Wheat[J]. 2007, (5): 147-150.
DOI：

Effect of Nitrogen Application Levels on Nitrogen Assimilation and Grain Protein Components Accumulation in Strong Gluten Wheat[J]. 2007, (5): 147-150. DOI：

摘要

在高产条件下研究了施氮水平对强筋小麦济麦20氮素同化及籽粒蛋白质组分积累和品质的影响

结果表明

在0~195 kg/hm2施氮量范围内

增施氮肥显著提高旗叶硝酸还原酶和谷氨酰胺合成酶活性

提高各器官氮素含量和积累量

促进籽粒单体蛋白、可溶性和不溶性谷蛋白积累

提高籽粒蛋白质含量及可溶性和不溶性谷蛋白占总蛋白的比例

改善籽粒品质;285 kg/hm2施氮量处理与195 kg/hm2施氮量处理相比

旗叶硝酸还原酶和谷氨酰胺合成酶活性及籽粒蛋白质含量均无显著变化

但单体蛋白含量及占总蛋白质的比例升高

可溶性和不溶性谷蛋白含量及占总蛋白质的比例降低

籽粒品质下降

兼顾高产和优质的适宜施氮量为105~195 kg/hm2。

Abstract

Effect of nitrogen application levels on nitrogen assimilation and grain protein components accumulation in strong gluten wheat was studied on the condition of high-yield.Results showed that with nitrogen supply increasing from 0 to 195 kg/hm2

nitrate reductase(NR) and glutamine synthetase(GS) activities in flag leaf were enhanced

the content of nitrogen and the amount of nitrogen accumulated in every organs increased

the content of monomeric protein

soluble glutenin and insoluble glutenin increased

the content of total protein and the ratios of soluble glutenin and insoluble glutenin to total protein increased

grain quality was improved.With excessive nitrogen supplied

NR and GS activity in flag leaf and total protein content in grain were not affected significantly

but the ratios of soluble and insoluble glutenin to total protein

and grain quality decreased.Nitrogen supplied from 105 kg/hm2 to 195 kg/hm2 can realize high yield and high quality simultaneously.

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