Pyrus bretschneideri_Dangshansuli

     The first draft genome sequence of the pear cv.‘Dangshansuli’ (P. bretschneideri Rehd.), also known as Chinese white pear (Asian pear),was assembled based on a bacterial artificial chromosome (BAC)-by-BAC strategy, thereby alleviating issues of high rates of heterozygosity and the complexity of repeated reads. A total of 2,103 scaffolds were assembled for this pear genome with an N50 of ∼0.54 Mb, representing 97.1% (512.0 Mb) of the estimated genome size (527.0 Mb) with 194× genome coverage. Based on a high-density genetic map, a total of 386.7 Mb sequences, corresponding to ∼75.5% of the assembled genome, were anchored to all 17 chromosomes of the pear genome.

Sequencing Platforms               Illumina

 Assembly Level                       Chromosome

Estimated Genome Size           527Mb

Assembled Genome Size         512Mb

Scaffold N50                            0.54Mb

Contig N50                              0.036Mb

Gene Number                          42812