Chromosome-level dataset from

Fabada is a traditional market class of common bean (Phaseolus vulgaris L.) cultivated in northern Spain, recognized for its distinctive seed phenotype with very large, white, and oblong seeds. High-throughput genotyping of this market class revealed that its genome is predominantly of Andean origin, with approximately 30 % introgression from the Mesoamerican gene pool. The de novo genome assembly of the A25 bean genotype, derived from the local cultivar 'Andecha' which belongs to the Fabada market class, is described. Two complementary technologies were used: PacBio (Sequel II) for long reads and Illumina (NovaSeq PE150) for short reads. The depth of coverage achieved was 112x for Illumina and 47x for PacBio. Genome assembly resulted in 468,9 Mbp (98.5 % BUSCO completeness), organized into 1363 scaffolds plus the mitochondrial and chloroplast genomes. Based on the reference genome (NCBI accession number GCF000499845.2), these scaffolds were organized into 11 chromosomes and 169 unplaced scaffolds. The mitochondrial genome was assembled based on that of P. vulgaris (NCBI accession number NC_045135). Two mitochondrial scaffolds were obtained, one of 371,437 bp, and the other of 11,183 bp. The chloroplast genome was assembled based on that of