Abstract
Several durum wheat (Triticitm durum) cultivars exhibiting susceptible or moderately susceptible reactions to the leaf rust fungus (Puccinia recondita tritici) were evaluated for slow rusting. Percentage severity and reactions for P. recondita tritici on each cultivar were evaluated periodically after initial infection. Logit analysis of disease progress curves was used to compare cultivars. The durum wheats consistently exhibited low rust severities in the field. The durums were always characterized by lower infection rates than the susceptible bread wheat cultivar Thatcher (Triticum aestivum). The area under the disease progress curve was smaller for the durum wheats than for Thatcher. The high correlation between apparent infection rate and the final rust severity indicated that final rust severity could be used as an indication of infection rate. The high correlation coefficient for the apparent infection rate between the two top leaves indicated that either leaf would provide an accurate evaluation of the cultivar. Yields of the durum wheat cultivars were not increased by controlling leaf rust. Yields of the susceptible bread wheat cultivar Thatcher were significantly increased by controlling leaf rust. The slow rusting displayed by the durum wheat cultivars studied apparently provide adequate protection against leaf rust under North Dakota conditions.
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Claims 8
Claim · model-written summary
Durum wheat cultivars consistently had low field rust severity.
- Taxon
- durum wheats
Triticum turgidum subsp. durume0 - Interactor
- ruste0pathogen
- Outcome
- rust severitiese0
- Setting
- in the fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The durum wheats consistently exhibited low rust severities in the field.”
Claim · model-written summary
Durum wheat cultivars had lower infection rates than bread wheat cultivar Thatcher.
- Taxon
- durumse0
- Interactor
- Puccinia recondita tritici
.jpeg?width=60)
Puccinia reconditae1pathogen - Outcome
- infection ratese0
- Direction
- lowere0
- Comparator
- susceptible bread wheat cultivar Thatchere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpeg?width=500)
Verbatim
e0“The durums were always characterized by lower infection rates than the susceptible bread wheat cultivar Thatcher (Triticum aestivum).”
e1“leaf rust fungus (Puccinia recondita tritici)”
Claim · model-written summary
Durum wheat cultivars had smaller disease progress curve area than Thatcher.
- Taxon
- durum wheatsTriticum turgidum subsp. durume0
- Interactor
- Puccinia recondita triticiPuccinia reconditae1pathogen
- Outcome
- area under the disease progress curvee0
- Direction
- smallere0
- Comparator
- Thatchere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The area under the disease progress curve was smaller for the durum wheats than for Thatcher.”
e1“leaf rust fungus (Puccinia recondita tritici)”
Claim · model-written summary
Apparent infection rate was highly correlated with final rust severity, supporting final severity as an infection-rate indicator.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Interactor
- ruste0pathogen
- Outcome
- final rust severitye0
- Comparator
- apparent infection ratee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high correlation between apparent infection rate and the final rust severity indicated that final rust severity could be used as an indication of infection rate.”
t0“durum wheat”
Claim · model-written summary
Apparent infection rates in the top two leaves were highly correlated, allowing either leaf to evaluate the cultivar.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Organ / stage
- two top leavese0
- Outcome
- apparent infection ratee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high correlation coefficient for the apparent infection rate between the two top leaves indicated that either leaf would provide an accurate evaluation of the cultivar.”
t0“durum wheat”
Claim · model-written summary
Controlling leaf rust did not significantly increase durum wheat cultivar yields.
- Taxon
- durum wheatTriticum turgidum subsp. durume0
- Treatment
- controlling leaf ruste0
- Interactor
- leaf ruste0pathogen
- Outcome
- Yieldse0
- Direction
- not increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of the durum wheat cultivars were not increased by controlling leaf rust.”
Claim · model-written summary
Controlling leaf rust significantly increased susceptible bread wheat cultivar Thatcher yields.
- Taxon
- bread wheat
Triticum aestivume0 - Material
- Thatchere0
- Treatment
- controlling leaf ruste0
- Interactor
- leaf ruste0pathogen
- Outcome
- Yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of the susceptible bread wheat cultivar Thatcher were significantly increased by controlling leaf rust.”
Claim · model-written summary
Slow rusting in the studied durum wheat cultivars apparently provided adequate protection in North Dakota.
- Taxon
- durum wheatTriticum turgidum subsp. durume0
- Interactor
- leaf ruste0pathogen
- Outcome
- adequate protection against leaf ruste0
- Setting
- North Dakotae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The slow rusting displayed by the durum wheat cultivars studied apparently provide adequate protection against leaf rust under North Dakota conditions.”