Lin Ling , Enting Wang , Kangxu Wang , Cougui Cao , Shijie Shi , Yang Jiang
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引用次数: 0
Abstract
Nitrogen fertilizer application significantly affects the protein and starch distribution in rice grains, thereby influencing eating quality and overall grain quality. This study investigated different rice varieties—Conventional Indica Rice, Indica-Japonica Hybrid (Indica-leaning, Long Grain), Indica-Japonica Hybrid (Japonica-leaning, Short Grain)—under two nitrogen treatments (0 kg ha−1 and 200 kg ha−1). Grains were milled into four layers (L1–L4, representing 0°%–9°%, 9°%–14°%, 14°%–19°%, and 81°% of rice weight, respectively) to analyze their layered protein and starch content. High nitrogen fertilization increased protein content by 37.2°%–65.8°%, predominantly in the outer layers, and altered starch distribution. Under low nitrogen conditions, starch content in the third layer (L3) increased significantly by 74.02°%. However, high nitrogen fertilization increased milling intensity, reducing starch retention and taste quality, and causing up to a 14°% yield loss. These findings underscore the importance of optimizing nitrogen application and milling practices to balance eating quality, nutritional integrity, and yield.
期刊介绍:
The Journal of Cereal Science was established in 1983 to provide an International forum for the publication of original research papers of high standing covering all aspects of cereal science related to the functional and nutritional quality of cereal grains (true cereals - members of the Poaceae family and starchy pseudocereals - members of the Amaranthaceae, Chenopodiaceae and Polygonaceae families) and their products, in relation to the cereals used. The journal also publishes concise and critical review articles appraising the status and future directions of specific areas of cereal science and short communications that present news of important advances in research. The journal aims at topicality and at providing comprehensive coverage of progress in the field.