Genomic characterization of a MAGIC population containing introgressions from four tetraploid Gossypium species
Ganesh Pinnika, Ping Li, Jack C McCarty, Johnie N Jenkins, David D Fang · 2026
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Description
Ganesh Pinnika and co-authors map the genetics of a cotton breeding population enriched with wild species DNA, in a 2026 study. Upland cotton has a narrow genetic base, so breeders cross in segments from related wild species. Whole-genome crossing drags in unwanted traits, so the team started from lines carrying single substituted chromosomes. Crossing thirty-two such lines with five cultivars yielded 797 inbred lines for study.
Gene reads on parents and offspring tracked the alien segments. Nearly every inbred line carried introgressed pieces, on about nine chromosomes on average. Segments from one donor species, Gossypium barbadense, won out in the most lines. The population split into four kinship groups. Even after five rounds of random mating, large alien blocks persisted, a sign of linkage drag. The authors offer the lines as breeding material and a caution on wild crosses.
Catalog record
| CREATOR | Ganesh Pinnika, Ping Li, Jack C McCarty, Johnie N Jenkins, David D Fang |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 58 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |