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
Gem (US 71655-014)PI 688121accession
Gem 17-14-07GEM17-14-07accession
Garber SeedlingPI 112064accession
Shu LiPI 132103accession
Chinfon LiPI 654917accession
Syan LiPI 654960accession
Dan Bae (Olympic)PI 617678accession
Koyama PearPI 541805accession
Ya Li seedling China sourcePI 665772accession
Seuri LiPI 541904accession
DawnPI 541170accession
Beurré HardyPI 300691accession
Beurré Hardy - Royal RedPI 541363accession
Domestic Pear "French TypePI 541441accession
Gansel's BergamotPI 280033accession
Glou MorceauPI 541310accession
Nouveau PoiteauPI 246419accession
Quince-PearPI 688189accession
P. cordata (hybrid) - FrancePI 541577accession
Romania 14/109 F2- F-2PI 665775accession
Romania 14/125 F2-3-131PI 654914accession
Romania 3/35 FE-12-139PI 654916accession
Romania 4/115 F2-8-194PI 654915accession