Integrating Multi-omics Analysis to Decipher the Genetic Basis of Heterosis in Xieyou9308.

ABSTRACT: The intersubspecific rice hybrid Xieyou9308 exhibits striking hybrid vigor and serves as a valuable resource for dissecting the genetic basis of yield heterosis in indica-japonica crosses. However, the molecular mechanisms underlying this hybrid vigor remain poorly understood. Leveraging a set of recombinant inbred lines (RILs) and an immortalized F2 (IMF₂) population derived from Xieyou9308, 1,300,425 genomic variants were identified, which were consolidated into 3818 BIN markers. Genomic regions inherited from Zhonghui9308 were positively associated with traits including plant height, heading date, panicle length, and grain number per panicle. In contrast, regions derived from XieqingzaoB, particularly those located on chromosome 3, positively associated with grain length and

SUBMITTER: Lin F 

PROVIDER: S-EPMC12847566 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature