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Effects of Low Field Temperature on the Physicochemical Properties and Fine Structure Stability of High-Quality Rice Starch during the Grain Filling Stage

文献类型： 外文期刊

作者： Pang, Xutong 1 ; Zhang, Dongmeng 1 ; Xue, Haobo 1 ; Yao, Dongping 3 ; Shen, Hong 2 ; Mou, Baohui 2 ; Gu, Panqi 2 ; Zhou, Ruijuan 2 ; Meng, Fudie 1 ; Wu, Jun 1 ; Lei, Dongyang 1 ; Bai, Bin 2 ;

作者机构： 1.Hunan Agr Univ, Coll Agron, Changsha 410128, Peoples R China

2.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China

3.Hunan Biol & Electromech Polytech, Coll Plant Sci & Technol, Changsha 410127, Peoples R China

关键词： high-quality rice; low field temperature; stability of starch quality; starch physicochemical properties and structure

期刊名称：FOODS （ 影响因子：5.1； 五年影响因子：5.6 ）

ISSN：

年卷期： 2024 年 13 卷 19 期

页码：

收录情况： SCI

摘要： The consumption of high-quality rice is increasing. Low temperatures during grain filling may affect the starch synthesis of high-quality rice and thus affect the quality of the rice itself. In this study, two high-quality conventional rice cultivars and two high-quality hybrid rice cultivars were selected and sown at a low temperature and normal temperature in the field. The low temperature during grain filling increased the amylose content, final viscosity, setback, short amylopectin chain ratio, and degree of amylopectin branching in four high-quality rice cultivars; meanwhile, the amylopectin content, gelatinization temperature, proportion of medium-long chain amylopectin, and the short-range order of starch decreased. Compared with the normal temperature, the alterations in the physicochemical and structural qualities of high-quality conventional rice cultivars YZX and NX42 were less significant at lower temperatures. The starch quality of high-quality conventional rice was more stable than hybrid high-quality rice.

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