Structural and physicochemical effects on the starch quality of the high-quality wheat genotype caused by delayed sowing

作者：Xiaomei Huang, Xin Zhou, Xueqing Liu, Wen Zhong, Xinyu Wang, Zhengchun Ju, Yan Yin, Qingguo Xin, Ning Liu, Ximei Liu, Yuli Jin, Guie Wang, Jiangchun Wang, Pengtao Ma · 发表于：Frontiers in Nutrition · 年份：2024 · DOI：10.3389/fnut.2024.1389745 · 被引用次数：11 · 研究领域：Food composition and properties、Wheat and Barley Genetics and Pathology、Rice Cultivation and Yield Improvement

Background Bread wheat is one of the most important food crops associated with ensuring food security and human nutritional health. The starch quality is an important index of high-quality wheat. It is affected by a complex series of factors; among which, suitable sowing time is a key factor. Aim and methods To analyze the integrative effects of sowing time on the starch quality of high-quality wheat, in the present study, we selected a high-quality bread wheat cultivar Jinan 17 and investigated the effect of different sowing times on the starch properties and the related genes by analyzing X-ray diffraction patterns, apparent amylose content, thermal properties, pasting properties, in vitro starch digestibility, and qRT-PCR. Meanwhile, we also investigated the agronomic and yield performance that may be associated with the starch properties. Results Delayed sowing had little effect on starch crystalline morphology, but there was a tendency to reduce the formation of crystals within wheat starch granules: (1) delayed sowing for 15 days altered the thermal properties of starch, including onset, peak and termination temperatures, and enthalpy changes; (2) delayed sowing for 30 days changed the thermal characteristics of starch relatively insignificant; (3) significant differences in pasting characteristics occurred: peak viscosity and hold-through viscosity increased, while final viscosity, breakdown viscosity, and setback viscosity tended to increase and then decrease, suggest...