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Association between % SDS-unextractable polymeric protein (%UPP) and end-use quality in Chinese bread wheat cultivars

文献类型： 外文期刊

作者： Zhang, Pingping 2 ; He, Zhonghu 1 ; Zhang, Yan 1 ; Xia, Xianchun 1 ; Chen, Dongshen 4 ; Zhang, Yong 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, Natl Wheat Improvement Ctr, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100081, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Biol & Technol, Nanjing 210014, Jiangsu, Peoples R China

3.CAAS, CIMMYT, China Beijing Off, Beijing 100081, Peoples R China

4.Ningxia Acad Agr & Forestry Sci, Crop Res Inst, Yongning 750105, Ningxia Autonom, Peoples R China

关键词： genotype;pan bread: bakery product

期刊名称：CEREAL CHEMISTRY （ 影响因子：1.984； 五年影响因子：2.043 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Trial I, with 33 spring cultivars, and trial II, with 21 winter cultivars, sown in four environments in the northwestern China spring wheat region and northern winter wheat region, respectively. were used to Study the effect of genotype and environment on the size distribution of polymeric proteins. Association between quantity and size distribution of polymeric protein and dough properties (both trials) and northern-style Chinese steamed-bread (CSB) (trial I) and pan bread (trial II) qualities were also investigated. In trial I, all protein attributes, such as flour protein content. SDS-extractable polymeric protein in the flour (EPP), SDS-unextractable polymeric protein in the flour (UPP), and percent UPP in total polymeric protein (%UPP), were largely determined by environment, whereas variation in dough strength resulted from variation in UPP and %UPP across environments. In trial II, EPP was largely determined by environment, and UPP and %UPP were largely determined by genotype. These differences might result from different levels of protein content and dough strength in the two trials. The EPP was positively correlated with dough extensibility and was generally negatively correlated with dough stability and maximum resistance in both trials. However, %UPP was significantly positively correlated with dough stability and maximum resistance and end-Use quality in both trials. In trial 1, correlation coefficients between %UPP and maximum resistance and CSB score were r = 0.90 and 0.71. respectively, whereas in trial 11, the correlation coefficients between %UPP and maximum resistance and pan bread score were 0.96 and 0.87. respectively. Therefore, selection for high %UPP together with high-quality glutenin subunits should lead to improved dough strength and end-use quality in Chinese wheats.

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