Introgression from Gossypium hirsutum is a driver for population divergence and genetic diversity in Gossypium barbadense

• DOI: 10.1111/tpj.15702
• Publication Date: 2022-02-08T05:20:05Z
• Authors: Pengpeng Wang; Na Dong; Maojun Wang; Gaofei Sun; Yinhua Jia; Xiaoli Geng; Min Liu; Weipeng Wang; Zhaoe Pan; Qiuyue Yang; Hongge Li; Chunyan Wei; Liru Wang; Hongkun Zheng; Shoupu He; Xianlong Zhang; Qinglian Wang; Xiongming Du
• Keywords: Gossypium barbadense; Introgression; Genetic divergence; Gossypium

SUMMARY During the domestication and improvement processes, interspecific introgression from Gossypium hirsutum has reorganized genomic architecture of barbadense ; however, details trait‐related genetic loci remain largely unknown. Here, we perform a genome‐wide population analysis genetically recategorize 365 G. accessions into four subgroups which is different previous categorizations. A total 315 events to , primarily contributed divergence agronomic trait variation in are identified. We find that 70% have greatly increased diversity . Some identified with divergent haplotype selection for adaptation environment at high latitudes. Through association study genome linkage disequilibrium interval haplotyping analyses, two fiber micronaire‐related blocks detected, one ( FM2 ) introgressed Seven distinguished traits related growth period, plant architecture, stronger vegetative habit found pleiotropic effects controlled by single gene Thus, this provides new insights breeding history highlights driver improving cultivars