A field experiment was conducted to explore the impact on rice quality using high-quality (HH) or drought-resistant (HY) cultivars under flooding irrigation (F) or dry cultivation (D) in ratooning rice system by evaluating the metabolism or physicochemical traits of starch, fatty acids, and amino acids affecting grain quality. Compared to FHY and DHY in the main or ratoon season, DHH in ratoon season (DHHR) exhibited a higher appearance and processing quality but lower cooking quality. DHHR mainly synthesized long branch chain amylopectin to construct the crystalline regions with increased crystallinity, crystallites size, interplanar spacing, dislocation density, Asp and Thr in brown and head rice. Also, it accumulated more of C16:0, C18:0, C18:1, C18:2, and C18:3 but reduced glutelin in head rice. An increase in functional groups and diversity was seen in brown and head rice, respectively. Overall, these traits improved the processing, appearance, and pasting quality of DHHR.

进行了田间试验，通过评估代谢或理化性状，探索在再生稻系统中漫灌（F）或旱作（D）下使用优质（HH）或抗旱（HY）品种对水稻品质的影响影响谷物品质的淀粉、脂肪酸和氨基酸。与主要或宿根季节的FHY和DHY相比，宿根季节DHH（DHHR）表现出更高的外观和加工质量，但烹饪质量较低。DHHR 主要通过合成长支链支链淀粉来构建糙米和整精米中结晶度、晶粒尺寸、晶面间距、位错密度、Asp 和Thr 增加的结晶区。此外，它积累了更多的 C16:0、C18:0、C18:1、C18:2 和 C18:3，但减少了精米中的谷蛋白。分别在糙米和整精米中观察到功能组和多样性的增加。总体而言，这些特性改善了 DHHR 的加工、外观和粘贴质量。