Abstract
Crown rot (CR) is a soil-borne disease of wheat in arid and semiarid areas of the world. The incidence rate and severity of CR are increasing with each passing year, which seriously threatens the safety of world wheat production. Here, 522 wheat varieties/lines representing genetic diversity were used to identify and evaluate the resistance source to CR disease. Six varieties, including Zimai 12, Xinong 509, Mazhamai, Sifangmai, and Dawson, were classified as resistant ® to CR. Seventy-nine varieties were classified as moderately resistant (MR) to CR, accounting for 15.13% of the tested varieties. The wheat 660 K SNP array was used to identify resistance loci by genome-wide association analysis (GWAS). A total of 33 SNPs, located on chromosomes 1A, 1B, 1D, 4A, and 4D, were significantly correlated with seedling resistance to CR in two years. Among them, one SNP on chromosome 1A and nine SNPs on chromosome 1B showed most significant resistance to disease, phenotypic variance explained (PVE) by these SNPs were more than 8.45%. Except that significant locus AX-110436287 and AX109621209 on chromosome 1B and AX-94692276 on 1D are close to the already reported QTL, other SNPs are newly discovered resistance loci. These results could lay a strong theoretical foundation for the genetic improvement and breeding for CR resistance in wheat.
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Claims 8
Claim · model-written summary
Six wheat varieties were classified as crown rot resistant.
- Taxon
- wheat
Triticum aestivumt0 - Outcome
- resistant ® to CRe0
- Value
- Six varietiese0
Not reportedInteractor
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six varieties, including Zimai 12, Xinong 509, Mazhamai, Sifangmai, and Dawson, were classified as resistant ® to CR”
t0“Wheat”
Claim · model-written summary
Seventy-nine varieties were moderately resistant, comprising 15.13% of the tested varieties.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- moderately resistant (MR) to CRe0
- Value
- 15.13%e0
- Qualifier
- Seventy-nine varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seventy-nine varieties were classified as moderately resistant (MR) to CR, accounting for 15.13% of the tested varieties”
t0“Wheat”
Claim · model-written summary
GWAS found 33 SNPs associated significantly with seedling crown rot resistance over two years.
- Taxon
- wheatTriticum aestivumt0
- Gene
- SNPse0
- Outcome
- seedling resistance to CRe0
- Value
- 33 SNPse0
- Qualifier
- in two yearse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A total of 33 SNPs, located on chromosomes 1A, 1B, 1D, 4A, and 4D, were significantly correlated with seedling resistance to CR in two years”
t0“Wheat”
Claim · model-written summary
One SNP on chromosome 1A showed particularly significant disease resistance.
- Taxon
- wheatTriticum aestivumt0
- Gene
- SNP on chromosome 1Ae0
- Outcome
- resistance to diseasee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one SNP on chromosome 1A and nine SNPs on chromosome 1B showed most significant resistance to disease”
t0“Wheat”
Claim · model-written summary
Nine SNPs on chromosome 1B showed particularly significant disease resistance.
- Taxon
- wheatTriticum aestivumt0
- Gene
- SNPs on chromosome 1Be0
- Outcome
- resistance to diseasee0
- Value
- nine SNPse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one SNP on chromosome 1A and nine SNPs on chromosome 1B showed most significant resistance to disease”
t0“Wheat”
Claim · model-written summary
These SNPs explained over 8.45% of phenotypic variance.
- Taxon
- wheatTriticum aestivumt0
- Gene
- SNPse0
- Outcome
- phenotypic variance explained (PVE)e0
- Value
- more than 8.45%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phenotypic variance explained (PVE) by these SNPs were more than 8.45%”
t0“Wheat”
Claim · model-written summary
Three identified loci were near previously reported QTL.
- Taxon
- wheatTriticum aestivumt0
- Gene
- AX-110436287 and AX109621209e0
- Outcome
- close to the already reported QTLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant locus AX-110436287 and AX109621209 on chromosome 1B and AX-94692276 on 1D are close to the already reported QTL”
t0“Wheat”
Claim · model-written summary
Other SNPs were newly discovered resistance loci.
- Taxon
- wheatTriticum aestivumt0
- Gene
- SNPse0
- Outcome
- newly discovered resistance locie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“other SNPs are newly discovered resistance loci”
t0“Wheat”