Genotypic diversity of total phenolics, flavonoid content and antioxidant capacity in the USDA rice mini-core collection was analyzed. Wide genotypic variation was found in total phenolics, flavonoid content and ABTS antioxidant capacity. Genome-wide association mapping between the three antioxidant traits and 155 SSR markers was conducted using Q + K model which takes both population structure (Q) and relative kinship (K) into consideration. A total of 23 marker trait association were identified with markers from Rc gene showed the strongest association with the three antioxidant traits. Rid12, RM484, RM162, RM5371 were commonly detected for phenolic content, flavonoids content and antioxidant capacity.

分析了美国农业部水稻微型核心收集物中总酚类物质、类黄酮含量和抗氧化能力的基因型多样性。在总酚类物质、类黄酮含量和 ABTS 抗氧化能力方面发现了广泛的基因型变异。三个抗氧化性状和 155 个 SSR 标记之间的全基因组关联作图是使用 Q + K 模型进行的，该模型同时考虑了种群结构 (Q) 和相对亲缘关系 (K)。共鉴定出 23 个标记性状关联，其中Rc基因的标记与三种抗氧化性状的关联性最强。Rid12、RM484、RM162、RM5371 的酚类含量、类黄酮含量和抗氧化能力通常被检测到。