Introgression Breeding in Barley: Perspectives and Case Studies.
genetic diversity
genetic mapping
genetic resources
haplotype
high throughput genotyping
multi-rust resistance
Journal
Frontiers in plant science
ISSN: 1664-462X
Titre abrégé: Front Plant Sci
Pays: Switzerland
ID NLM: 101568200
Informations de publication
Date de publication:
2020
2020
Historique:
received:
10
03
2020
accepted:
13
05
2020
entrez:
30
6
2020
pubmed:
1
7
2020
medline:
1
7
2020
Statut:
epublish
Résumé
Changing production scenarios resulting from unstable climatic conditions are challenging crop improvement efforts. A deeper and more practical understanding of plant genetic resources is necessary if these assets are to be used effectively in developing improved varieties. In general, current varieties and potential varieties have a narrow genetic base, making them prone to suffer the consequences of new and different abiotic and biotic stresses that can reduce crop yield and quality. The deployment of genomic technologies and sophisticated statistical analysis procedures has generated a dramatic change in the way we characterize and access genetic diversity in crop plants, including barley. Various mapping strategies can be used to identify the genetic variants that lead to target phenotypes and these variants can be assigned coordinates in reference genomes. In this way, new genes and/or new alleles at known loci present in wild ancestors, germplasm accessions, land races, and un-adapted introductions can be located and targeted for introgression. In principle, the introgression process can now be streamlined and linkage drag reduced. In this review, we present an overview of (1) past and current efforts to identify diversity that can be tapped to improve barley yield and quality, and (2) case studies of our efforts to introgress resistance to stripe and stem rust from un-adapted germplasm. We conclude with a description of a modified Nested Association Mapping (NAM) population strategy that we are implementing for the development of multi-use naked barley for organic systems and share perspectives on the use of genome editing in introgression breeding.
Identifiants
pubmed: 32595671
doi: 10.3389/fpls.2020.00761
pmc: PMC7303309
doi:
Types de publication
Journal Article
Review
Langues
eng
Pagination
761Informations de copyright
Copyright © 2020 Hernandez, Meints and Hayes.
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