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RESEARCH ARTICLE (Open Access)
Contents Vol 75(2)

One hundred years of comparative genetic and physical mapping in cultivated oat (Avena sativa)

Charlene P. Wight https://orcid.org/0000-0003-1410-5631 A * , Victoria C. Blake B C , Eric N. Jellen https://orcid.org/0000-0002-7906-4845 D , Eric Yao B E , Taner Z. Sen https://orcid.org/0000-0002-5553-6190 B E and Nicholas A. Tinker A
+ Author Affiliations
- Author Affiliations

A Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada.

B Western Regional Research Center, Crop Improvement and Genetics Research Unit, United States Department of Agriculture—Agricultural Research Service, Albany, CA 94710, USA.

C Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT 59717, USA.

D Department of Plant & Wildlife Sciences, Brigham Young University, 4105 LSB, Provo, UT 84602, USA.

E Department of Bioengineering, University of California, Berkeley, CA 94720, USA.

* Correspondence to: charlene.wight@agr.gc.ca

Handling Editor: Chengdao Li

Crop & Pasture Science 75, CP23246 https://doi.org/10.1071/CP23246
Submitted: 31 August 2023  Accepted: 28 November 2023  Published: 19 January 2024

© 2024 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)

Abstract

Context

Researchers have been accumulating information concerning the locations of genes and quantitative trait loci (QTLs) in cultivated oat (Avena sativa L.) for more than 100 years.

Aims

The aim of this work was to create an inventory of genes and QTLs found in cultivated hexaploid oat and produce tools to make this resource more useful.

Methods

By using the positions of perfectly matched, single nucleotide polymorphism markers, each centimorgan (cM) location along the consensus map was assigned to a location on the OT3098 v2 physical map found on the GrainGenes database website (https://wheat.pw.usda.gov/jb/?data=/ggds/oat-ot3098v2-pepsico). This information was then used to assign physical locations to the genes and QTLs in the inventory, where possible.

Key results

A table comparing the major genetic maps of hexaploid oats to each other, to the 2018 oat consensus map, and to physical chromosomes was produced. Genome browser tracks aligning the consensus map regions and the locations of the genes and QTLs to OT3098 v2 were added to GrainGenes.

Conclusions

Many oat genes and QTLs identified using genetic mapping could be assigned positions on physical oat chromosomes. However, many of these assigned regions are quite long, owing to the presence of large areas of reduced recombination. Specific examples of identified patterns of recombination between the genetic and physical maps and validated gene and QTL locations are discussed.

Implications

These resources will assist researchers performing comparative genetic and physical mapping in oat.

Keywords: Avena, comparative mapping, curation, genes, genetic maps, molecular markers, oat, quantitative trait loci.

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