Abstract
Cercosporidium personatum (Berk. & Curt.) Deighton causes late leaf spot (LLS) in peanut ( Arachis hypogaea L.), which leads to necrotic lesions, early leaf senescence and yield losses. Detailed physiological analyses can contribute to an improved understanding of peanut‐disease interactions and cultivar improvement. A study was conducted evaluating two peanut cultivars with more (York) and less (Carver) quantitative resistance to C. personatum grown under fungicide‐sprayed and nonsprayed conditions in the field at Citra, FL over 2 yr. Data were collected on disease severity using the Florida 1 to 10 visual rating scale and by direct measurement of percent canopy lesion area. Leaf lifespan, total canopy photosynthesis (TCP), plant growth, and pod yield were also measured. Disease severity based on canopy lesion area was reduced by 30% in York compared to Carver. No additive effects of combining the resistant cultivar with fungicide were seen, as fungicide use increased yield by 364 kg ha −1 for both cultivars. Yield was more strongly related to disease severity based on canopy lesion area than to the Florida scale. Yield improvement with York was not as closely related to disease severity with only a 6% gain in pod yield in York compared to Carver. In addition, reduction in TCP was greater in York compared to Carver given their respective disease severity. These results indicated that combining resistance with the maintenance of physiological function during LLS infection could result in improved peanut yields under diseased conditions.
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Claims 7
Claim · model-written summary
Canopy lesion-area disease severity was 30% lower in cultivar York than in Carver.
- Taxon
- peanut
Arachis hypogaeae1 - Material
- Yorke4
- Interactor
- Cercosporidium personatumNothopassalora personatae1pathogen
- Outcome
- Disease severity based on canopy lesion areae4
- Direction
- reducede4
- Value
- 30%e4
- Comparator
- Carvere4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cercosporidium personatum (Berk. & Curt.) Deighton causes late leaf spot (LLS) in peanut ( Arachis hypogaea L.)”
e4“Disease severity based on canopy lesion area was reduced by 30% in York compared to Carver”
Claim · model-written summary
Fungicide use increased peanut yield by 364 kg ha−1 for both cultivars.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- fungicide usee4
- Outcome
- yielde4
- Direction
- increasede4
- Value
- 364 kg ha −1e4
- Comparator
- nonsprayede3
- Setting
- Citra, FLe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cercosporidium personatum (Berk. & Curt.) Deighton causes late leaf spot (LLS) in peanut ( Arachis hypogaea L.)”
e3“grown under fungicide‐sprayed and nonsprayed conditions in the field at Citra, FL over 2 yr”
e4“fungicide use increased yield by 364 kg ha −1 for both cultivars”
Claim · model-written summary
No additive effect on peanut yield was seen from combining the resistant cultivar with fungicide.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- combining the resistant cultivar with fungicidee5
- Outcome
- additive effectse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cercosporidium personatum (Berk. & Curt.) Deighton causes late leaf spot (LLS) in peanut ( Arachis hypogaea L.)”
e5“No additive effects of combining the resistant cultivar with fungicide were seen”
Claim · model-written summary
Yield was more strongly related to canopy-lesion-area disease severity than to the Florida scale.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- disease severity based on canopy lesion areae6
- Outcome
- Yielde6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cercosporidium personatum (Berk. & Curt.) Deighton causes late leaf spot (LLS) in peanut ( Arachis hypogaea L.)”
e6“Yield was more strongly related to disease severity based on canopy lesion area than to the Florida scale”
Claim · model-written summary
Cultivar York had a 6% gain in pod yield relative to Carver.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cercosporidium personatum (Berk. & Curt.) Deighton causes late leaf spot (LLS) in peanut ( Arachis hypogaea L.)”
e7“with only a 6% gain in pod yield in York compared to Carver”
Claim · model-written summary
The reduction in total canopy photosynthesis was greater in York than in Carver.
- Taxon
- peanutArachis hypogaeae1
- Material
- Yorke2
- Outcome
- reduction in TCPe2
- Direction
- greatere2
- Comparator
- Carvere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cercosporidium personatum (Berk. & Curt.) Deighton causes late leaf spot (LLS) in peanut ( Arachis hypogaea L.)”
e2“reduction in TCP was greater in York compared to Carver given their respective disease severity”
Claim · model-written summary
Combining resistance with maintenance of physiological function during late leaf spot infection could improve peanut yields under disease.
- Taxon
- peanutArachis hypogaeae2
- Outcome
- improved peanut yields under diseased conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cercosporidium personatum (Berk. & Curt.) Deighton causes late leaf spot (LLS) in peanut ( Arachis hypogaea L.)”
e2“combining resistance with the maintenance of physiological function during LLS infection could result in improved peanut yields under diseased conditions”
The same questions in other papers
fungicide · yield · Arachis hypogaea (peanut)Results differ
39 papers in the same direction as this paper · 10 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- no effect
- no effect
49 papers more in this group
See all 53 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.