The chromosome-scale genome assembly and annotation of Rosa bracteata (Macartney Rose)

Rosa bracteata is the only wild species in the section Bracteatae of the genus Rosa, and no genome assembly exists for this section. It has been used as a paternal donor in modern rose breeding and biological research due to its exceptional heat tolerance. Here, we present a high-quality chromosome-scale genome assembly of R. bracteata, totaling 540.63 Mb with a contig N50 of 35.97 Mb, anchored into seven pseudochromosomes. A total of 42,789 protein-coding genes were predicted, with 38,394 functionally annotated using public databases. This high-quality genome provides a valuable resource for investigating genetic evolution, molecular basis of adaptive traits, and facilitating molecular breeding for Rosa species.