Abstract
Fusarium head blight (FHB) resistance in wheat is often associated with undesirable agronomic traits such as tall plant height and a propensity for lodging. Plant height in wheat is genetically controlled by some semi-dwarfing alleles that alter the plant's sensitivity to gibberellins (GAs). The presence of semi-dwarfing alleles increases the frequency of anther retention, which may contribute to FHB susceptibility by providing an initiation site for infection. The application of plant growth regulators (PGRs) may enable farmers to grow the most resistant cultivars while controlling plant height to minimize lodging risk. In this study, five spring wheat cultivars that differed in level of FHB resistance, height, and semi-dwarfing alleles were tested to determine the effect of PGRs, specifically Manipulator™ and Ethrel™, on plant height, anther retention, and FHB resistance level and the interactions between them in Winnipeg and Carman, Manitoba in 2019 and 2020. Combined field results showed that Ethrel™ significantly reduced plant height. Both PGRs did not affect the anther retention or FHB resistance levels of the tested cultivars under dry conditions. There were significant interactions between variables, but they were relatively small compared to the main treatment and cultivars. Based on the results of this study, producers could benefit from the higher levels of FHB resistance often associated with tall cultivars and use PGRs to manage plant height and lodging without increased risk of FHB.
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Claims 4
Claim · model-written summary
Ethrel significantly reduced plant height in spring wheat in combined field results.
- Taxon
- spring wheat
Triticum aestivumt0 - Treatment
- Ethrel™e0
- Outcome
- plant heighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring wheat”
e0“Combined field results showed that Ethrel™ significantly reduced plant height”
Claim · model-written summary
Both PGRs (Manipulator and Ethrel) did not affect anther retention or FHB resistance level of the tested cultivars under dry conditions.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- Both PGRse0
- Interactor
- Fusarium graminearum
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=60)
Fusarium graminearumt1pathogen - Outcome
- anther retention or FHB resistance levelse0
- Direction
- did not affecte0
- Qualifier
- under dry conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=500)
Verbatim
t0“spring wheat”
t1“Fusarium graminearum”
e0“Both PGRs did not affect the anther retention or FHB resistance levels of the tested cultivars under dry conditions”
Claim · model-written summary
There were significant interactions between variables, but they were relatively small compared to the main treatment and cultivar effects.
- Taxon
- spring wheatTriticum aestivumt0
- Outcome
- interactions between variablese0
- Qualifier
- relatively small compared to the main treatment and cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring wheat”
e0“There were significant interactions between variables, but they were relatively small compared to the main treatment and cultivars”
Claim · model-written summary
Producers could benefit from the higher FHB resistance often associated with tall cultivars and use PGRs to manage plant height and lodging without increased FHB risk.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- use PGRse0
- Outcome
- manage plant height and lodging without increased risk of FHBe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring wheat”
e0“producers could benefit from the higher levels of FHB resistance often associated with tall cultivars and use PGRs to manage plant height and lodging without increased risk of FHB”
The same questions in other papers
class · Fusarium graminearum · Triticum aestivum (wheat)Results agree
2 papers in the same direction as this paper
- no effect
- no effect
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.