Claim · model-written summary
At site B, Beet western yellows virus infection significantly diminished seed oil content by up to 3%.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Interactor
- BWYVBeet western yellows viruse1pathogen
- Outcome
- oil content of seedse1
- Direction
- diminishede1
- Value
- up to 3%e1
- Setting
- site Be1
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“field experiments with Brassica napus (canola, oilseed rape)”
e1“At site B, BWYV infection significantly diminished oil content of seeds (up to 3%)”
Title
Yield-limiting potential of Beet western yellows virus in Brassica napus
R. A. C. Jones; B. A. Coutts; J. Hawkes Australian Journal of Agricultural Research 2007. doi:10.1071/ar06391
Other claims from this paper (17)
- Association At site A, Beet western yellows virus infection decreased seed yield by up to 46%.
- Association At site B, Beet western yellows virus infection decreased seed yield by 37%.
- Association Beet western yellows virus incidence explained 95% (site A) and 96% (site B) of the variation in yield gaps.
- Association Each 1% increase in virus incidence was associated with a yield decrease of 12 kg/ha at site A and 6 kg/ha at site B.
- Mechanism The yield decline at both sites was entirely because fewer seeds formed on infected plants.
- Association At site B, Beet western yellows virus infection was associated with increased individual seed weight by up to 11%.
- Association At site B, Beet western yellows virus infection was associated with increased erucic acid content by up to 44%.
- Association Seed protein content increased by up to 6–11% at both sites under Beet western yellows virus infection.
- Association At site B, the overall yield loss caused by BWYV and direct M. persicae feeding was 50% when BWYV incidence reached 98%.
- Association At site C, the overall combined yield decline caused by BWYV and direct feeding damage was 46% when BWYV incidence reached 97%.
- Association Beet western yellows virus has substantial yield-limiting potential in B. napus when many plants are infected at an early growth stage.
- Association Yield losses in Australian B. napus were greater than those reported previously in Europe.
- Intervention effect Imidacloprid seed dressing controlled insecticide-resistant Myzus persicae.
- Intervention effect Imidacloprid seed dressing suppressed spread of Beet western yellows virus for 2.5 months.
- Intervention effect Imidacloprid seed dressing increased seed yield by 84% at site B.
- Intervention effect Imidacloprid seed dressing increased seed yield by 88% at site C.
- Recommendation Seed dressing with imidacloprid before sowing provides good prospects for controlling Beet western yellows virus and M. persicae in B. napus.