Laboratório de Bioquímica Genética de Plantas, BIOAGRO, Universidade Federal de Viçosa, Viçosa, MG, 21236570-900, Brazil.
Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Feira de Santana, BA, 44036-900, Brazil.
Biochem Genet. 2024 Dec;62(6):4791-4803. doi: 10.1007/s10528-024-10698-5. Epub 2024 Feb 15.
Genetic diversity within a germplasm collection plays a vital role in the success of breeding programs. However, comprehending this diversity and identifying accessions with desirable traits pose significant challenges. This study utilized publicly available data to investigate SNP markers associated with protein and oil content in Brazilian soybeans. Through this research, twenty-two new QTLs (Quantitative Trait Loci) were identified, and we highlighted the substantial influence of Roanoke, Lee and Bragg ancestor on the genetic makeup of Brazilian soybean varieties. Our findings demonstrate that certain markers are being lost in modern cultivars, while others maintain or even increase their frequency. These observations indicate genomic regions that have undergone selection during soybean introduction in Brazil and could be valuable in breeding programs aimed at enhancing protein or oil content.
种质资源内的遗传多样性对育种计划的成功起着至关重要的作用。然而，理解这种多样性并识别具有理想性状的品系仍然具有很大的挑战性。本研究利用公开数据研究了与巴西大豆的蛋白质和油分含量相关的 SNP 标记。通过这项研究，鉴定出了 22 个新的 QTL（数量性状位点），并强调了罗诺克、李和布拉格祖先对巴西大豆品种遗传组成的重要影响。我们的研究结果表明，某些标记在现代品种中正在丢失，而其他标记则保持或甚至增加了它们的频率。这些观察结果表明，在巴西大豆引种过程中经历了选择的基因组区域，这在旨在提高蛋白质或油分含量的育种计划中可能具有重要价值。
