Claim · model-written summary
All chrysanthemum cultivars showed higher levels of silver damage under short daylength than under long daylength.
- Taxon
- Chrysanthemum
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Chrysanthemumt0 - Treatment
- short daylengthe0
- Outcome
- silver damagee0
- Direction
- highere0
- Comparator
- long daylengthe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“All cultivars showed higher levels of silver damage under short daylength compared with long daylength”
t0“Chrysanthemum”
Title
C. M. De Jager; R. P. T. ButÔT; M. E. C. Uiterdijk; et al. Journal of Economic Entomology 1997. doi:10.1093/jee/90.1.188
Other claims from this paper (10)
- Observation Tested chrysanthemum cultivars differed significantly in the level of silver damage (old leaves) and growth damage (young leaves) caused by thrips feeding, under all test circumstances.
- Association Chrysanthemum resistance to silver damage and to growth damage by thrips, measured under the different test circumstances, was highly correlated.
- Intervention effect All chrysanthemum cultivars were more susceptible to growth damage by thrips in the greenhouse than in the laboratory.
- Intervention effect The level of silver damage by thrips on chrysanthemum remained constant between test locations.
- Intervention effect A 4 times higher thrips density gave only 1.6 times more silver damage on chrysanthemum.
- Intervention effect A 4 times higher thrips density gave only 1.1 times more growth damage on chrysanthemum.
- Observation At the highest thrips density many thrips died, giving about the same thrips numbers in both density treatments at the end of the experiment.
- Observation Thrips tended to choose among chrysanthemum cultivars.
- Intervention effect Thrips choice among cultivars did not result in a higher variance in resistance in the free-choice experiment than in the no-choice experiment.
- Recommendation The authors conclude that thrips resistance measured in their standardized laboratory experiment gives a good prediction for chrysanthemum breeders selecting cultivars for thrips resistance under commercial greenhouse conditions.