Abstract
Genes for resistance to stem rust ( Sr ) (caused by Puccinia graminis Pers.:Pers. f. sp. tritici ) and leaf rust ( Lr ) ( P. recondita Roberge ex. Desmaz f. sp. tritici ) were detected in cultivars of wheat ( Triticum aestivum L.) of the International Winter Wheat Performance Nursery XII through XVII. The objectives were to test for the presence and distribution of Sr and Lr genes. Entries were inoculated with 28 isolates of P. graminis f. sp. tritici and 15 isolates of P. recondita f. sp. tritici , previously characterized for avirulenceJvirulenee to 26 Sr an 14 Lr genes, respectively. Sixteen of the 26 Sr genes and six of the 14 Lr genes were postulated as present. A few cultivars possessed a gene or genes for resistance other than those studied. No Sr genes for resistance were detected in three cultivars, a single gene was detected in each of 32 cultivars, two in 32, three in 13, and four Sr genes in two cultivars. Genes for stem rust resistance Sr5 , Sr McN, Sr l7 Sr 31, and Sr lO were most commonly postulated, whereas Sr 7b, Sr 9d, Sr 9e, Sr l2, Sr l3, Sr l4, Sr l5, Sr l6, Sr 25, Sr 26, and Sr 27 were not detected in any of the entries. No Lr genes for resistance were detected in 27 cultivars, one in each of 40, two genes each in 14, and three genes in each of two cultivars. Genes for leaf rust resistance LrlO and Lr26 were most commonly postulated, whereas Lr 21, Lr 2c, Lr 3ka, Lr 9, Lr l7, Lr lS, Lr l9, and Lr 30 were not detected.
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Claims 9
Claim · model-written summary
Sixteen Sr genes were postulated present.
- Taxon
- wheat
Triticum aestivumt0 - Gene
- Sre0
- Outcome
- Sr genese0
- Value
- Sixteen of the 26e0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sixteen of the 26 Sr genes and six of the 14 Lr genes were postulated as present.”
t0“Wheat”
Claim · model-written summary
Six Lr genes were postulated present.
- Taxon
- wheatTriticum aestivumt0
- Gene
- Lre0
- Outcome
- Lr genese0
- Value
- six of the 14e0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sixteen of the 26 Sr genes and six of the 14 Lr genes were postulated as present.”
t0“Wheat”
Claim · model-written summary
A few cultivars had resistance genes beyond the tested set.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- gene or genes for resistance other than those studiede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A few cultivars possessed a gene or genes for resistance other than those studied.”
t0“Wheat”
Claim · model-written summary
The Sr gene distribution ranged from no detected genes in three cultivars to four in two cultivars.
- Taxon
- wheatTriticum aestivumt0
- Gene
- Sre0
- Outcome
- Sr genes for resistancee0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No Sr genes for resistance were detected in three cultivars, a single gene was detected in each of 32 cultivars, two in 32, three in 13, and four Sr genes in two cultivars.”
t0“Wheat”
Claim · model-written summary
Sr5, Sr McN, Sr l7, Sr 31 and Sr lO were most commonly postulated.
- Taxon
- wheatTriticum aestivumt0
- Gene
- Sr5 , Sr McN, Sr l7 Sr 31, and Sr lOe0
- Outcome
- most commonly postulatede0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genes for stem rust resistance Sr5 , Sr McN, Sr l7 Sr 31, and Sr lO were most commonly postulated”
t0“Wheat”
Claim · model-written summary
The listed Sr resistance genes were not detected.
- Taxon
- wheatTriticum aestivumt0
- Gene
- Sr 7b, Sr 9d, Sr 9e, Sr l2, Sr l3, Sr l4, Sr l5, Sr l6, Sr 25, Sr 26, and Sr 27e0
- Outcome
- not detected in any of the entriese0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sr 7b, Sr 9d, Sr 9e, Sr l2, Sr l3, Sr l4, Sr l5, Sr l6, Sr 25, Sr 26, and Sr 27 were not detected in any of the entries.”
t0“Wheat”
Claim · model-written summary
The Lr gene distribution ranged from none in 27 cultivars to three in two.
- Taxon
- wheatTriticum aestivumt0
- Gene
- Lre0
- Outcome
- Lr genes for resistancee0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No Lr genes for resistance were detected in 27 cultivars, one in each of 40, two genes each in 14, and three genes in each of two cultivars.”
t0“Wheat”
Claim · model-written summary
LrlO and Lr26 were the most commonly postulated Lr genes.
- Taxon
- wheatTriticum aestivumt0
- Gene
- LrlO and Lr26e0
- Outcome
- most commonly postulatede0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genes for leaf rust resistance LrlO and Lr26 were most commonly postulated”
t0“Wheat”
Claim · model-written summary
The listed Lr genes were not detected.
- Taxon
- wheatTriticum aestivumt0
- Gene
- Lr 21, Lr 2c, Lr 3ka, Lr 9, Lr l7, Lr lS, Lr l9, and Lr 30e0
- Outcome
- not detectede0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lr 21, Lr 2c, Lr 3ka, Lr 9, Lr l7, Lr lS, Lr l9, and Lr 30 were not detected.”
t0“Wheat”