Effects of irrigation schemes on the characteristics of starch and protein in wheat (Triticum aestivum L.)

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• 作者：Zhongmin Dai ; Yan Li ; Hong Zhang ; Suhui Yan and Wenyang Li
• 刊名：Starch - Strke
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：68
• 期：5-6
• 页码：454-461
• 全文大小：135K
• ISSN：1521-379X

文摘

The present study was conducted to characterize the effects of different irrigation schemes on the characteristics of starch and protein in two wheat cultivars with different end-use quality. A variance analysis showed that the main effects of year, genotype and irrigation were significant for the contents of amylose, starch, protein and glutenin macropolymer (GMP), although the influence of year was not significant for the protein content. The effects of interaction on the amylose, protein and GMP contents were different. When compared with the normal irrigation treatment (W2), the water-saving irrigation (W1), and rainfed (W0) treatments led to an increase in the volume percentage of the B-type starch granules and a decrease in those of the A-type granules, respectively. Flour from wheat planted under the W1 and W0 conditions showed lower amylose and starch contents, and higher protein contents, peak viscosities and final viscosities compared with flour from wheat planted under the W2 treatment. The GMP content and particle proportion were also affected by different water regimes, with the highest GMP content value and larger particles of GMP occurring in the water-saving irrigation treatment. The results suggest that suitable irrigation is beneficial for better end-use quality of the wheat flour.