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.
Li et al. (Sat,) studied this question.