Abstract
Quantitative PCR analysis and visual disease assessment (VDA) were used to study Fusarium culmorum and F. poae ear blight of wheat and its fungicidal control in three glasshouse trials (1994–5 and 1996–7). VDA indicated high levels of both diseases in the trials, while PCR analysis showed that the amounts of F. poae detected in infected plants were low relative to the amounts detected for F. culmorum . PCR and VDA analysis both indicated that the demethylase‐inhibiting (DMI) fungicides prochloraz and tebuconazole significantly decreased F. culmorum and F. poae ear blight. The PCR results, however, revealed levels of disease control by fungicide treatments that were consistently higher than those suggested by VDA. Overall, both fungicides appeared equally effective in controlling the two pathogens. PCR and VDA analysis indicated that the anilino‐pyrimidine fungicide pyrimethanil had no significant effect on F. culmorum ear blight. Correlations between VDA at cereal growth stage 80 and PCR analysis were similar for F. culmorum and F. poae . Yield analysis, as measured by 1000 grain weight, indicated that DNA content more accurately predicted yield loss than did VDA scores. Inoculation with F. culmorum significantly reduced yield and significant relationships were observed between F. culmorum disease (as assessed visually or by PCR) and yield, with yield decreasing as disease increased. In contrast, inoculation with F. poae had no significant effect on yield and no significant relationships were observed between F. poae disease and yield. These results have important implications for field studies of Fusarium ear blight of wheat because they highlight the importance of identification of the causal organisms to the species level.
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Claims 11
Claim · model-written summary
Prochloraz and tebuconazole significantly decreased F. culmorum ear blight in wheat.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- prochloraz and tebuconazolee0
- Interactor
- F. culmorum
.jpg?width=60)
Fusarium culmorume0pathogen - Outcome
- ear blighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Fusarium ear blight of wheat”
e0“prochloraz and tebuconazole significantly decreased F. culmorum and F. poae ear blight”
Claim · model-written summary
Prochloraz and tebuconazole significantly decreased F. poae ear blight in wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- prochloraz and tebuconazolee0
- Interactor
- F. poae
Fusarium poaee0pathogen - Outcome
- ear blighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e0“prochloraz and tebuconazole significantly decreased F. culmorum and F. poae ear blight”
Claim · model-written summary
Pyrimethanil had no significant effect on F. culmorum ear blight in wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- pyrimethanile2
- Interactor
- F. culmorumFusarium culmorume2pathogen
- Outcome
- ear blighte2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e2“pyrimethanil had no significant effect on F. culmorum ear blight”
Claim · model-written summary
The PCR results showed higher levels of disease control by fungicide treatments than those suggested by VDA.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- fungicide treatmentse3
- Outcome
- levels of disease controle3
- Direction
- highere3
- Comparator
- those suggested by VDAe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e3“The PCR results, however, revealed levels of disease control by fungicide treatments that were consistently higher than those suggested by VDA”
Claim · model-written summary
Both fungicides were equally effective in controlling the two pathogens.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- both fungicidese1
- Outcome
- effective in controlling the two pathogense1
- Direction
- no_changeinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e1“Overall, both fungicides appeared equally effective in controlling the two pathogens”
Claim · model-written summary
Correlations between VDA and PCR analysis were similar for F. culmorum and F. poae.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- F. culmorumFusarium culmorume1pathogen
- Second interactor
- F. poaeFusarium poaee1pathogen
- Outcome
- Correlations between VDA at cereal growth stage 80 and PCR analysise1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e1“Correlations between VDA at cereal growth stage 80 and PCR analysis were similar for F. culmorum and F. poae”
Claim · model-written summary
DNA content more accurately predicted yield loss than VDA scores.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- yield losse4
- Direction
- more accurately predictede4
- Comparator
- VDA scorese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e4“Yield analysis, as measured by 1000 grain weight, indicated that DNA content more accurately predicted yield loss than did VDA scores”
Claim · model-written summary
Inoculation with F. culmorum significantly reduced wheat yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Inoculation with F. culmorume5
- Interactor
- F. culmorumFusarium culmorume5pathogen
- Outcome
- yielde5
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e5“Inoculation with F. culmorum significantly reduced yield”
Claim · model-written summary
Wheat yield decreased as F. culmorum disease increased, a significant relationship.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- F. culmorumFusarium culmorume6pathogen
- Outcome
- yielde6
- Direction
- decreasinge6
- Qualifier
- as disease increasede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e6“significant relationships were observed between F. culmorum disease (as assessed visually or by PCR) and yield, with yield decreasing as disease increased”
Claim · model-written summary
Inoculation with F. poae had no significant effect on wheat yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- inoculation with F. poaee7
- Interactor
- F. poaeFusarium poaee7pathogen
- Outcome
- yielde7
- Direction
- no_changeinferrede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e7“inoculation with F. poae had no significant effect on yield”
Claim · model-written summary
No significant relationship was observed between F. poae disease and wheat yield.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- F. poaeFusarium poaee2pathogen
- Outcome
- yielde2
- Direction
- no_changeinferrede2
- Qualifier
- no significant relationshipse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Fusarium ear blight of wheat”
e2“no significant relationships were observed between F. poae disease and yield”
The same questions in other papers
tebuconazole · Fusarium poae · Triticum aestivum (wheat)Results agree
1 paper in the same direction as this paper
- positive
Fusarium poae · yield · Triticum aestivum (wheat)Results agree
1 paper in the same direction as this paper
- no effect
prochloraz · Fusarium culmorum · Triticum aestivum (wheat)Results agree
2 papers in the same direction as this paper
- positive
- positive
tebuconazole · Fusarium culmorum · Triticum aestivum (wheat)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →Fusarium culmorum · yield · Triticum aestivum (wheat)Results agree
6 papers in the same direction as this paper
- negative
- negative
- negative
3 papers more in this group
See all 7 papers →inoculation · yield · Triticum aestivum (wheat)Positive and negative results
64 papers in the same direction as this paper · 549 in the opposite direction
- positive
- positive
- positive
610 papers more in this group
See all 614 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.