Reconstruction of the Largest Pedigree Network for Pear Cultivars and Evaluation of the Genetic Diversity of the USDA-ARS National Pyrus Collection.

Publication Overview
TitleReconstruction of the Largest Pedigree Network for Pear Cultivars and Evaluation of the Genetic Diversity of the USDA-ARS National Pyrus Collection.
AuthorsMontanari S, Postman J, Bassil NV, Neale DB
TypeJournal Article
Journal NameG3 (Bethesda, Md.)
CitationMontanari S, Postman J, Bassil NV, Neale D. Reconstruction of the largest pedigree network for pear cultivars and evaluation of the genetic diversity of the USDA-ARS national Pyrus collection. G3. 2020; 10(9):3285-3297.


The USDA-ARS National Clonal Germplasm Repository (NCGR) in Corvallis, Oregon, maintains one of the world's largest and most diverse living Pyrus collection. A thorough genetic characterization of this germplasm will provide relevant information to optimize the conservation strategy of pear biodiversity, support the use of this germplasm in breeding, and increase our knowledge of Pyrus taxonomy, evolution, and domestication. In the last two decades simple sequence repeat (SSR) markers have been used at the NCGR for cultivar identification and small population structure analysis. However, the recent development of the Applied Biosystems™ Axiom™ Pear 70K Genotyping Array has allowed high-density single nucleotide polymorphism (SNP)-based genotyping of almost the entire collection. In this study, we have analysed this rich dataset to discover new synonyms and mutants, identify putative labelling errors in the collection, reconstruct the largest pear cultivar pedigree and further elucidate the genetic diversity of Pyrus.

This publication contains information about 1 projects:
Project NameDescription
Pyrus NCGR collection SNP genotyping dataPyrus NCGR collection SNP genotyping data
This publication contains information about 1,570 stocks:
Stock NameUniquenameType
OHxF 266PI 541424accession
OHxF 267PI 541400accession
OHxF 280PI 541425accession
OHxF 282PI 541426accession
OHxF 288PI 541373accession
OHxF 319PI 541427accession
OHxF 333PI 541405accession
OHxF 340PI 541403accession
OHxF 361PI 541374accession
OHxF 377PI 541428accession
PetrovkaPI 506374accession
Reimer RedPI 617504accession
Rombough Mite Resistant Pear #1PI 617593accession
Pyrodwarf - rootstock clone (IPR expires 2017)PI 617654accession
BU 2/33 - Pyro II (P. communis rootstock clone)PI 617679accession
OHxF 247PI 541422accession
OHxF 512PI 541414accession
OH 20 fire blight resistant rootstockPI 541237accession
OH-11 (Pyriam) Rootstock SelectionPI 688093accession
Romania 138-31-38PI 541967accession
Belle PearCPYR 3005accession
Clapp FavoritePI 502171accession
KallePI 541312accession