A phased telomere-to-telomere genome of Rosa wichuraiana 'Basye's Thornless', a key progenitor for modern rose breeding
Rosa wichuraiana 'Basye's Thornless' (BT) is a critical diploid germplasm in rose genetics and breeding programmes, prized for its superior traits including thornlessness, disease resistance, and vigorous root-sprouting capacity. Here, we present a telomere-to-telomere (T2T) haplotype-resolved genome assembly of BT generated using PacBio HiFi long reads, Oxford Nanopore Technologies ultra-long reads, and Hi-C chromatin conformation capture data. The final assembly spans 978.2 Mb and is anchored to 16 contiguous scaffolds, representing 14 chromosome-scale sequences corresponding to two complete haplotypes of seven chromosome pairs with six gaps, alongside the chloroplast and mitochondrial genomes.