Rp2: A Novel Rust Resistance Locus from Sudanese Sorghum for Broadening Genetic Diversity in U.S. Breeding Programs

By unlocking rare, evolutionarily conserved rust resistance locus from the Sudanese sorghum core collection, this work bridges global germplasm diversity with modern breeding, revealing Rp2 locus is a tractable genomic entry point for stacking durable, multi-disease resistance and strengthening the genetic resilience of U.S. sorghum improvement.

Genetic Architecture and Co-Localized QTL Underlying Plant Height and Brix Content in Sorghum

Genetic modeling and high-density QTL mapping reveal that sorghum plant height and brix content are governed by interacting major genes and polygenes, share co-localized loci that explain their phenotypic correlation, and are influenced by auxin- and carbon-fixation–related candidate genes that offer targets for breeding improved varieties.

Genetic Dissection of Seed Dormancy in Sorghum Reveals qDOR-9 as a Key Locus Linked to ABA Sensitivity, Flowering Time, and Pre-Harvest Sprouting Susceptibility

Rodríguez et al. identified and validated the qDOR-9 locus in sorghum as a key regulator of seed dormancy, linking it to ABA sensitivity and flowering time, and highlighting its unintended association with PHS susceptibility due to historical breeding for dwarfism.