Identification of novel quantitative trait loci linked to crown rot resistance in spring wheat
Crown rot (CR), caused by various Fusarium species, is a major disease in many cereal-growing regions worldwide. Fusarium culmorum is one of the most important species, which can cause significant yield losses in wheat. A set of 126 advanced International Maize and Wheat Improvement Center (CIMMYT) spring bread wheat lines were phenotyped against CR for field crown, greenhouse crown and stem, and growth room crown resistance scores. Of these, 107 lines were genotyped using Diversity Array Technology (DArT) markers to identify quantitative trait loci linked to CR resistance by genome-wide association study. Results of the population structure analysis grouped the accessions into three sub-groups. Genome wide linkage disequilibrium was large and declined on average within 20 cM (centi-Morgan) in the panel. General linear model (GLM), mixed linear model (MLM), and naïve models were tested for each CR score and the best model was selected based on quarantine-quarantine plots. Three marker-trait associations (MTAs) were identified linked to CR resistance; two of these on chromosome 3B were associated with field crown scores, each explaining 11.4% of the phenotypic variation and the third MTA on chromosome 2D was associated with greenhouse stem score and explained 11.6% of the phenotypic variation. Together, these newly identified loci provide opportunity for wheat breeders to exploit in enhancing CR resistance via marker-assisted selection or deployment in genomic selection in wheat breeding programs.
Main Authors: | , , , , , , |
---|---|
Format: | Article biblioteca |
Language: | English |
Published: |
MDPI
2018
|
Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Crown Rot Resistance, Genome-Wide Association Study, FUSARIUM CULMORUM, DISEASE RESISTANCE, GENOMES, QUANTITATIVE TRAIT LOCI, TRITICUM AESTIVUM, |
Online Access: | https://hdl.handle.net/10883/19623 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cimmyt-10883-19623 |
---|---|
record_format |
koha |
spelling |
dig-cimmyt-10883-196232023-01-26T21:10:51Z Identification of novel quantitative trait loci linked to crown rot resistance in spring wheat Erginbas-Orakci, G. Sehgal, D. Sohail, Q. Ogbonnaya, F.C. Dreisigacker, S. Pariyar, S.R. Dababat, A.A. AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Crown Rot Resistance Genome-Wide Association Study FUSARIUM CULMORUM DISEASE RESISTANCE GENOMES QUANTITATIVE TRAIT LOCI TRITICUM AESTIVUM Crown rot (CR), caused by various Fusarium species, is a major disease in many cereal-growing regions worldwide. Fusarium culmorum is one of the most important species, which can cause significant yield losses in wheat. A set of 126 advanced International Maize and Wheat Improvement Center (CIMMYT) spring bread wheat lines were phenotyped against CR for field crown, greenhouse crown and stem, and growth room crown resistance scores. Of these, 107 lines were genotyped using Diversity Array Technology (DArT) markers to identify quantitative trait loci linked to CR resistance by genome-wide association study. Results of the population structure analysis grouped the accessions into three sub-groups. Genome wide linkage disequilibrium was large and declined on average within 20 cM (centi-Morgan) in the panel. General linear model (GLM), mixed linear model (MLM), and naïve models were tested for each CR score and the best model was selected based on quarantine-quarantine plots. Three marker-trait associations (MTAs) were identified linked to CR resistance; two of these on chromosome 3B were associated with field crown scores, each explaining 11.4% of the phenotypic variation and the third MTA on chromosome 2D was associated with greenhouse stem score and explained 11.6% of the phenotypic variation. Together, these newly identified loci provide opportunity for wheat breeders to exploit in enhancing CR resistance via marker-assisted selection or deployment in genomic selection in wheat breeding programs. 2018-10-02T16:41:08Z 2018-10-02T16:41:08Z 2018 Article 1661-6596 https://hdl.handle.net/10883/19623 10.3390/ijms19092666 English CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose. Open Access PDF Basel, Switzerland MDPI 9, art. 2666 19 International Journal of Molecular Sciences |
institution |
CIMMYT |
collection |
DSpace |
country |
México |
countrycode |
MX |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cimmyt |
tag |
biblioteca |
region |
America del Norte |
libraryname |
CIMMYT Library |
language |
English |
topic |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Crown Rot Resistance Genome-Wide Association Study FUSARIUM CULMORUM DISEASE RESISTANCE GENOMES QUANTITATIVE TRAIT LOCI TRITICUM AESTIVUM AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Crown Rot Resistance Genome-Wide Association Study FUSARIUM CULMORUM DISEASE RESISTANCE GENOMES QUANTITATIVE TRAIT LOCI TRITICUM AESTIVUM |
spellingShingle |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Crown Rot Resistance Genome-Wide Association Study FUSARIUM CULMORUM DISEASE RESISTANCE GENOMES QUANTITATIVE TRAIT LOCI TRITICUM AESTIVUM AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Crown Rot Resistance Genome-Wide Association Study FUSARIUM CULMORUM DISEASE RESISTANCE GENOMES QUANTITATIVE TRAIT LOCI TRITICUM AESTIVUM Erginbas-Orakci, G. Sehgal, D. Sohail, Q. Ogbonnaya, F.C. Dreisigacker, S. Pariyar, S.R. Dababat, A.A. Identification of novel quantitative trait loci linked to crown rot resistance in spring wheat |
description |
Crown rot (CR), caused by various Fusarium species, is a major disease in many cereal-growing regions worldwide. Fusarium culmorum is one of the most important species, which can cause significant yield losses in wheat. A set of 126 advanced International Maize and Wheat Improvement Center (CIMMYT) spring bread wheat lines were phenotyped against CR for field crown, greenhouse crown and stem, and growth room crown resistance scores. Of these, 107 lines were genotyped using Diversity Array Technology (DArT) markers to identify quantitative trait loci linked to CR resistance by genome-wide association study. Results of the population structure analysis grouped the accessions into three sub-groups. Genome wide linkage disequilibrium was large and declined on average within 20 cM (centi-Morgan) in the panel. General linear model (GLM), mixed linear model (MLM), and naïve models were tested for each CR score and the best model was selected based on quarantine-quarantine plots. Three marker-trait associations (MTAs) were identified linked to CR resistance; two of these on chromosome 3B were associated with field crown scores, each explaining 11.4% of the phenotypic variation and the third MTA on chromosome 2D was associated with greenhouse stem score and explained 11.6% of the phenotypic variation. Together, these newly identified loci provide opportunity for wheat breeders to exploit in enhancing CR resistance via marker-assisted selection or deployment in genomic selection in wheat breeding programs. |
format |
Article |
topic_facet |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Crown Rot Resistance Genome-Wide Association Study FUSARIUM CULMORUM DISEASE RESISTANCE GENOMES QUANTITATIVE TRAIT LOCI TRITICUM AESTIVUM |
author |
Erginbas-Orakci, G. Sehgal, D. Sohail, Q. Ogbonnaya, F.C. Dreisigacker, S. Pariyar, S.R. Dababat, A.A. |
author_facet |
Erginbas-Orakci, G. Sehgal, D. Sohail, Q. Ogbonnaya, F.C. Dreisigacker, S. Pariyar, S.R. Dababat, A.A. |
author_sort |
Erginbas-Orakci, G. |
title |
Identification of novel quantitative trait loci linked to crown rot resistance in spring wheat |
title_short |
Identification of novel quantitative trait loci linked to crown rot resistance in spring wheat |
title_full |
Identification of novel quantitative trait loci linked to crown rot resistance in spring wheat |
title_fullStr |
Identification of novel quantitative trait loci linked to crown rot resistance in spring wheat |
title_full_unstemmed |
Identification of novel quantitative trait loci linked to crown rot resistance in spring wheat |
title_sort |
identification of novel quantitative trait loci linked to crown rot resistance in spring wheat |
publisher |
MDPI |
publishDate |
2018 |
url |
https://hdl.handle.net/10883/19623 |
work_keys_str_mv |
AT erginbasorakcig identificationofnovelquantitativetraitlocilinkedtocrownrotresistanceinspringwheat AT sehgald identificationofnovelquantitativetraitlocilinkedtocrownrotresistanceinspringwheat AT sohailq identificationofnovelquantitativetraitlocilinkedtocrownrotresistanceinspringwheat AT ogbonnayafc identificationofnovelquantitativetraitlocilinkedtocrownrotresistanceinspringwheat AT dreisigackers identificationofnovelquantitativetraitlocilinkedtocrownrotresistanceinspringwheat AT pariyarsr identificationofnovelquantitativetraitlocilinkedtocrownrotresistanceinspringwheat AT dababataa identificationofnovelquantitativetraitlocilinkedtocrownrotresistanceinspringwheat |
_version_ |
1756373493379760128 |