Huang Yani, Tian Lixin, Yang Qinghua, Zhang Miaomiao, Liu Guiyang, Yu Shaopeng, Feng Baili
College of Agronomy, Northwest A & F University, Yangling, Xianyang 712100, China.
Foods. 2022 Nov 17;11(22):3690. doi: 10.3390/foods11223690.
Nitrogen is a key factor affecting sorghum growth and grain quality. This experiment was designed to investigate the physicochemical properties of sorghum starch in four sorghum varieties (Liaoza 10, Liaoza 19, Jinza 31, and Jinza 34) under four nitrogen levels: 0 kg/ha urea (N1), 300 kg/ha urea as base fertilizer (N2), 300 kg/ha urea as topdressing at the jointing stage (N3), and 450 kg/ha urea as topdressing at the jointing stage (N4). The results showed that grain size and amylose content increased with increasing nitrogen fertilizer level, peaking at N3. The peak viscosity, final viscosity, gelatinization temperature, initial temperature, final temperature, and enthalpy value increased with the nitrogenous fertilizer level, peaking at N3. The application of nitrogen fertilizer at the jointing period significantly increased the above indicators. However, excess nitrogen at the jointing period (N4) can significantly reduce the above indicators, thus changing the physicochemical properties and structure of sorghum starch. Overall, nitrogen significantly affects the structure and physicochemical properties of sorghum starch.
氮是影响高粱生长和籽粒品质的关键因素。本试验旨在研究四个高粱品种（辽杂10号、辽杂19号、晋杂31号和晋杂34号）在四个氮水平下高粱淀粉的理化性质：0 kg/公顷尿素（N1）、300 kg/公顷尿素作为基肥（N2）、300 kg/公顷尿素在拔节期作为追肥（N3）以及450 kg/公顷尿素在拔节期作为追肥（N4）。结果表明，籽粒大小和直链淀粉含量随氮肥水平的增加而增加，在N3时达到峰值。峰值粘度、最终粘度、糊化温度、起始温度、终止温度和焓值随氮肥水平的增加而增加，在N3时达到峰值。拔节期施用氮肥显著提高了上述指标。然而，拔节期过量施氮（N4）会显著降低上述指标，从而改变高粱淀粉的理化性质和结构。总体而言，氮显著影响高粱淀粉的结构和理化性质。
Zotero 插件
