Pyrus ussuriensis x communis (Cultivated Ussurian pear) genome size: 511 Mbp published: 2019-11-25 Ou C et al. A de novo genome assembly of the dwarfing pear rootstock Zhongai 1. Sci Data. 2019 Nov 25, 6(1): 281 https://www.rosaceae.org/species/pyrus_ussuriensis/genome_v1.0