Genetic improvement of resistance to preharvest sprouting using a major QTL allele for embryo dormancy in rice
Kamal Bhattarai, Min Guo, Marya Bibi, Huayu Xu, Christian De Guzman, Xing-You Gu · 2025
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Description
Kamal Bhattarai and co-authors move a dormancy gene from weedy rice into a breeding line to stop grain sprouting on the plant. Their 2025 paper fights pre-harvest sprouting, where ripe grain wakes too early and ruins harvests. A strong dormancy allele found in wild weedy rice, at a known locus, is the weapon.
Crosses mapped a dozen trait loci for flowering, height, and seed dormancy. The target locus explained about a third of the dormancy spread and boosted partner loci when present. Storage heat tests showed it also stretches how long dormancy lasts. Marker-guided breeding carried the allele into later generations, and field lines confirmed less sprouting on the panicle. The authors present the move as a template for hardening other cereal lines.
Catalog record
| CREATOR | Kamal Bhattarai, Min Guo, Marya Bibi, Huayu Xu, Christian De Guzman, Xing-You Gu |
|---|---|
| YEAR | 2025 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 37 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |