Pyrus betulifolia_Duli

Pyrus betuleafolia is a wild species native to China, and it is widely distributed in the northern region and bears small fruit with a diameter of ~1 cm and two carpels . The plants of this species show characteristics of a well-developed root system, vigorous growth, tolerance to several abiotic and biotic stresses and excellent affinity for Occidental and Oriental pear cultivars . With these peculiarities, P. betuleafolia is widely used as a rootstock in northern China. Pyrus betuleafolia was believed to be an ancestral species linked to Oriental and Occidental pears.

The de novo assembly of the genome of P. betuleafolia-Shanxi Duli using an integrated strategy that combines PacBio sequencing, BioNano mapping and chromosome conformation capture (Hi-C) sequencing. The genome assembly size was 532.7 Mb, with a contig N50 of 1.57 Mb. A total of 59 552 protein-coding genes and 247.4 Mb of repetitive sequences were annotated for this genome.

Sequencing Platforms              PacBio+Bionano+Hi-C

 Assembly Level                       Chromosome

Estimated Genome Size           511Mb

Assembled Genome Size         532.7Mb

Scaffold N50                            28.1Mb

Contig N50                              1.57Mb

Gene Number                          59552