Geographic Divergence and Putative Candidate Gene Discovery of Rice Grain Quality in China.

ABSTRACT: Rice grain quality improvement is closely linked to economic development, local dietary habits, and traditional culture. Despite significant advances in breeding over the past decade, enhancing grain quality remains a major challenge. Here, we evaluated 315 newly sequenced rice varieties (163 japonica and 152 indica) to assess milling quality (e.g., head rice yield, HRY), cooking quality (e.g., amylose content, AC), and nutritional quality (e.g., protein content, PC). Clear regional differences were observed: Yunnan and Jiangsu contributed more high-quality japonica varieties, whereas Guangdong and Guizhou produced more high-quality indica varieties. A genome-wide association study identified several QTLs and putative candidate genes associated with grain quality traits. A composite haplot

SUBMITTER: Wang F 

PROVIDER: S-EPMC12602800 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature