Abstract
Fusarium head blight (FHB) of wheat is an important disease worldwide, affecting the yield, end-use quality and threatening food safety. Genetic resources or stable loci for FHB resistance are still limited in breeding programs. A panel of 265 bread wheat accessions from China, CIMMYT-Mexico and other countries was screened for FHB resistance under 5 field experiments in Mexico and China, and a genome-wide association analysis was performed to identify QTLs associated with FHB resistance. The major locus Fhb1 was significantly associated with FHB severity and Deoxynivalenol content in grains. FHB screening experiments in multiple environments showed that Fhb1 -harbouring accessions Sumai3, Sumai5, Ningmai9, Yangmai18 and Tokai66 had low FHB index, disease severity and DON content in grains in response to different Fusarium species and ecological conditions in Mexico and China. Accessions Klein Don Enrique, Chuko and Yumai34 did not have Fhb1 but still showed good FHB resistance and low mycotoxin accumulation. Sixteen loci associated with FHB resistance or DON content in grains were identified on chromosomes 1A, 1B, 2B, 3A, 3D, 4B, 4D, 5A, 5B, 7A, and 7B in multiple environments, explaining phenotypic variation of 4.43–10.49%. The sources with good FHB resistance reported here could be used in breeding programs for resistance improvement in Mexico and China, and the significant loci could be further studied and introgressed for resistance improvement against FHB and mycotoxin accumulation in grains.
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Claims 10
Claim · model-written summary
Fhb1 was significantly associated with FHB severity.
- Taxon
- bread wheat
Triticum aestivumt0 - Gene
- Fhb1e0
- Outcome
- FHB severitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The major locus Fhb1 was significantly associated with FHB severity and Deoxynivalenol content in grains.”
t0“bread wheat”
Claim · model-written summary
Fhb1 was significantly associated with grain Deoxynivalenol content.
- Taxon
- bread wheatTriticum aestivumt0
- Gene
- Fhb1e0
- Outcome
- Deoxynivalenol content in grainse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The major locus Fhb1 was significantly associated with FHB severity and Deoxynivalenol content in grains.”
t0“bread wheat”
Claim · model-written summary
Fhb1 carrying Sumai3, Sumai5 and Ningmai9 had low disease measures and grain DON.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Sumai3, Sumai5, Ningmai9e0
- Gene
- Fhb1e0
- Outcome
- FHB index, disease severity and DON content in grainse0
- Direction
- lowe0
- Setting
- Mexico and Chinae0
FusariumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fhb1 -harbouring accessions Sumai3, Sumai5, Ningmai9, Yangmai18 and Tokai66 had low FHB index, disease severity and DON content in grains in response to different Fusarium species and ecological conditions in Mexico and China.”
t0“bread wheat”
Claim · model-written summary
Fhb1 carrying Yangmai18 and Tokai66 had low disease measures and grain DON.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Yangmai18 and Tokai66e0
- Gene
- Fhb1e0
- Outcome
- FHB index, disease severity and DON content in grainse0
- Direction
- lowe0
- Setting
- Mexico and Chinae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fhb1 -harbouring accessions Sumai3, Sumai5, Ningmai9, Yangmai18 and Tokai66 had low FHB index, disease severity and DON content in grains in response to different Fusarium species and ecological conditions in Mexico and China.”
t0“bread wheat”
Claim · model-written summary
Klein Don Enrique showed good resistance and low mycotoxin without Fhb1.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Klein Don Enriquee0
- Gene
- Fhb1e0
- Outcome
- FHB resistance and low mycotoxin accumulatione0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accessions Klein Don Enrique, Chuko and Yumai34 did not have Fhb1 but still showed good FHB resistance and low mycotoxin accumulation.”
t0“bread wheat”
Claim · model-written summary
Chuko showed good resistance and low mycotoxin without Fhb1.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Chukoe0
- Gene
- Fhb1e0
- Outcome
- FHB resistance and low mycotoxin accumulatione0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accessions Klein Don Enrique, Chuko and Yumai34 did not have Fhb1 but still showed good FHB resistance and low mycotoxin accumulation.”
t0“bread wheat”
Claim · model-written summary
Yumai34 showed good resistance and low mycotoxin without Fhb1.
- Taxon
- bread wheatTriticum aestivumt0
- Material
- Yumai34e0
- Gene
- Fhb1e0
- Outcome
- FHB resistance and low mycotoxin accumulatione0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accessions Klein Don Enrique, Chuko and Yumai34 did not have Fhb1 but still showed good FHB resistance and low mycotoxin accumulation.”
t0“bread wheat”
Claim · model-written summary
Sixteen resistance or DON loci were identified across eleven chromosomes and explained 4.43–10.49% variation.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- loci associated with FHB resistance or DON content in grainse0
- Value
- 4.43–10.49%e0
- Qualifier
- chromosomes 1A, 1B, 2B, 3A, 3D, 4B, 4D, 5A, 5B, 7A, and 7Be0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sixteen loci associated with FHB resistance or DON content in grains were identified on chromosomes 1A, 1B, 2B, 3A, 3D, 4B, 4D, 5A, 5B, 7A, and 7B in multiple environments, explaining phenotypic variation of 4.43–10.49%.”
t0“bread wheat”
Claim · model-written summary
Resistance sources could be used for wheat breeding in Mexico and China.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- used in breeding programs for resistance improvemente0
- Setting
- Mexico and Chinae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sources with good FHB resistance reported here could be used in breeding programs for resistance improvement in Mexico and China”
t0“bread wheat”
Claim · model-written summary
Significant loci could be studied and introgressed for resistance improvement.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- studied and introgressed for resistance improvemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the significant loci could be further studied and introgressed for resistance improvement against FHB and mycotoxin accumulation in grains.”
t0“bread wheat”