Claim · model-written summary
Sexual recombination in F. graminearum crosses yielded significant genetic variation for aggressiveness, DON and fungal mycelium production.
- Taxon
- F. graminearum
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Fusarium graminearume0 - Outcome
- genetic variation for aggressiveness, DON and fungal mycelium productione0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“The analyses of 120 progenies of the crosses from each of the highly aggressive parental F. graminearum isolates revealed significant genetic variation for aggressiveness, DON and fungal mycelium production following sexual recombination.”
Title
Hans-Henning Voß University writing server of the University of Hohenheim (Universität Hohenheim) 2011
Other claims from this paper (14)
- Intervention effect Rht-D1b reduced plant height by 7–18% in three European elite winter wheat crosses.
- Intervention effect Rht-D1b increased FHB severity by 22–53% in progeny of three European elite winter wheat crosses.
- Observation The strongest additive FHB reaction QTL mapped to Rht-D1 on chromosome arm 4DS and coincided with a major plant height QTL in all three populations.
- Observation Each of the three wheat populations had 8 to 14 minor QTL for FHB reaction.
- Association Detected FHB QTL mostly had significant interactions with environment.
- Association Detected FHB QTL often coincided with plant height QTL.
- Intervention effect In Mercia isogenic lines, Rht-D1b increased mean FHB severity by 52% relative to wild type.
- Intervention effect In Mercia isogenic lines, Rht-B1d increased mean FHB severity by 35% relative to wild type.
- Intervention effect In Maris Huntsman lines, Rht alleles increased mean FHB severity by 22 to 83%, with significance only for very short lines carrying Rht-B1c or Rht-B1b+Rht-D1b.
- Observation One of the two F. graminearum progenies had stable transgressive segregants with increased aggressiveness.
- Association The field trial showed no significant wheat variety by Fusarium isolate interaction.
- Association More aggressive isolates increased FHB severity on wheat varieties with reduced FHB resistance.
- Association More aggressive isolates increased DON production on wheat varieties with reduced FHB resistance.
- Recommendation The authors recommend maintaining a broad genetic base of FHB resistance using more than one unrelated resistance source and phenotypic plus marker-assisted selection.