Claim · model-written summary
In Mercia isogenic lines, Rht-D1b increased mean FHB severity by 52% relative to wild type.
- Taxon
- wheat
Triticum aestivume1 - Material
- Merciae0
- Treatment
- Rht-D1be0
- Gene
- Rht-D1be0
- Outcome
- mean FHB severitye0
- Direction
- increasede0
- Value
- 52e0
- Comparator
- wild-type (rht)e0
Not reportedCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By means of isogenic lines in the genetic background of the variety Mercia, Rht-D1b and Rht-B1d significantly increased mean FHB severity by 52 and 35%, respectively, compared to the wild-type (rht).”
e1“wheat populations”
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-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 Sexual recombination in F. graminearum crosses yielded significant genetic variation for aggressiveness, DON and fungal mycelium production.
- 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.