For grain width, the chromosome 9 novel peak coincides with OsFD141, which codes for a bZIP transcription factor involved in flowering time and developmental plasticity (its pleiotropic regulatory function may therefore also affect grain width).
& Lin, H.X.A. QTL for rice grain width and weight encodes a previously unknown RING-type E3 ubiquitin ligase.
Weng, J. et al. Isolation and initial characterization of GW5, a major QTL associated with rice grain width and weight.
QTLs for grain width (qGW), grain thickness (qGT), brown grain width (qBGW), and brown grain thickness (qBGT) explained 77.67, 36.24, 89.63, and 39.41% of total phenotypic variation, respectively.
GW2 is an important gene that regulates grain width and weight.
Fan, C. et al. GS3, a major QTL for grain length and weight and minor QTL for grain width and thickness in rice, encodes a putative transmembrane protein.
Major peaks for grain width are found on chromosomes 1 and 5, with minor peaks on chromosomes 3 and 9 (Extended Data Fig. 10b).
Genome-wide association study (GWAS) peaks were concordant with known loci, including GS337, GW539, and qGL740 for grain length, and GW5 for grain width.
Extended Data Fig. 10 Genome-wide association for grain length, grain width and bacterial blight isolate C5. a c, GWAS for grain length (GRLT, n = 2,012) (a), grain width (GRWD, n = 2,012) (b) and bacterial blight isolate C5 (BBL C5, n = 381) (c).
b Grain width comparison.
